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Essentials of Anatomy and Physiology, 9e (Marieb)

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Chapter 2

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Basic Chemistry

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Short Answer

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Figure 2.1

Using Figure 2.1, identify the following:

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1)

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The structure of the functional protein is ______.

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Answer:

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B

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Diff: 3

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Page Ref: 50-51

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2)

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The structure of the nucleotide is ______.

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Answer:

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E

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Diff: 3

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Page Ref: 54-56

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3)

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The structure of the polysaccharide is ______.

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Answer:

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C

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Diff: 3

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Page Ref: 45

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4)

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The structure of the monosaccharide is ______.

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Answer:

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A

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Diff: 3

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Page Ref: 45

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Fill in the blank or provide a short answer:

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5)

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When a change in matter alters the basic nature of the substance, it is called a ______change.

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Answer:

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chemical

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Diff: 1

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Page Ref: 27

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6)

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Inactive or stored energy is called ______energy.

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Answer:

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potential

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Diff: 1

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Page Ref: 28

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7)

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Isotopes differ from each other only in the number of ______they possess.

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Answer:

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neutrons

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Diff: 2

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Page Ref: 33

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8)

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Decomposition of a protein produces ______.

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Answer:

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amino acids

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Diff: 3

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Page Ref: 40; 49

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9)

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The sum of the protons and neutrons in an atom is called the ______.

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Answer:

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atomic mass number

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Diff: 2

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Page Ref: 32

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10)

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Compounds that contain carbon-hydrogen bonding are collectively termed ______compounds.

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Answer:

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organic

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Diff: 2

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Page Ref: 42

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11)

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Polar molecules, like water, result when electrons are shared ______.

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Answer:

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unequally

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Diff: 2

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Page Ref: 37

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12)

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The outermost shell of an atom is called the ______shell.

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Answer:

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valence

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Diff: 2

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Page Ref: 35

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13)

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An acid is a molecule that releases (donates) ______. State the answer in two ways.

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Answer:

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protons; hydrogen ions

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Diff: 2

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Page Ref: 43

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14)

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All ______have an amine (N) group.

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Answer:

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amino acids

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Diff: 2

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Page Ref: 42

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15)

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Glycogen and starch are examples of a specific category of carbohydrates called ______.

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Answer:

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polysaccharides

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Diff: 2

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Page Ref: 46

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16)

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A solution with a pH of 11.7 is ______times more acidic than a solution with a pH of 8.7.

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Answer:

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1000

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Diff: 2

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Page Ref: 44

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17)

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Cholesterol is an example of a ______, a specific category of lipids.

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Answer:

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steroids

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Diff: 2

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Page Ref: 47; 49

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18)

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Enzymes are examples of ______proteins. State the answer in two ways.

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Answer:

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globular; functional

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Diff: 3

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Page Ref: 50

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19)

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The building blocks of nucleic acids are called ______.

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Answer:

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nucleotides

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Diff: 2

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Page Ref: 54

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20)

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The universal energy compound that provides visible energy to cells is ______.

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Answer:

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ATP (adenosine triphosphate)

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Diff: 2

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Page Ref: 55

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Multiple Choice

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1)

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Inactive energy is referred to as:

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A)

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mechanical energy

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B)

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potential energy

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C)

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kinetic energy

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D)

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radiant energy

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E)

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electrical energy

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Answer:

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B

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Diff: 1

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Page Ref: 28

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2)

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An atom with 11 protons, 12 neutrons, and 10 electrons is a(n):

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A)

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molecule

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B)

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anion

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C)

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cation

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D)

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isotope

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E)

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radioisotope

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Answer:

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C

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Diff: 3

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Page Ref: 36

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3)

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The movement of ions across cell membranes is an example of:

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A)

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radiant energy

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B)

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chemical energy

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C)

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electrical energy

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D)

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mechanical energy

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E)

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potential energy

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Answer:

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C

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Diff: 2

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Page Ref: 28

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4)

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Ninety-six percent of the human body is composed of the elements:

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A)

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carbon, calcium, sodium, and oxygen

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B)

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carbon, oxygen, iron, and potassium

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C)

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carbon, oxygen, hydrogen, and nitrogen

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D)

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calcium, magnesium, potassium, and iron

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E)

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sodium, potassium, hydrogen, and sulfur

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Answer:

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C

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Diff: 2

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Page Ref: 29

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5)

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The most abundant element in the human body is:

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A)

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carbon

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B)

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oxygen

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C)

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hydrogen

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D)

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nitrogen

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E)

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calcium

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Answer:

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B

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Diff: 2

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Page Ref: 30

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6)

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The simplest atom—containing one proton, one electron, and no neutrons—is:

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A)

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carbon

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B)

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hydrogen

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C)

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oxygen

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D)

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nitrogen

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E)

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sodium

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Answer:

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B

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Diff: 1

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Page Ref: 31

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7)

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Atomic mass is equivalent to the number of ______in an atom.

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A)

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protons

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B)

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neutrons

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C)

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electrons

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D)

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protons and electrons

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E)

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protons and neutrons

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Answer:

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E

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Diff: 2

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Page Ref: 32

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8)

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Which of these elements composes bone:

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A)

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calcium

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B)

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sulfur

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C)

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chlorine

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D)

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iron

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E)

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iodine

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Answer:

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A

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Diff: 2

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Page Ref: 30

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9)

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Which of the following is the role of magnesium:

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A)

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it is present in bone, and is an important cofactor for enzyme activity in a number of metabolic reactions

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B)

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it is needed to make functional thyroid hormones

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C)

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it is a component of the functional hemoglobin molecule that transports oxygen within red blood cells, as well as a component of some enzymes

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D)

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it is the major extracellular cation in its ionic form, and is important for water balance, conduction of nerve impulses, and muscle contraction

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E)

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it is a major extracellular anion in its ionic form

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Answer:

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A

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Diff: 3

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Page Ref: 30

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10)

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An atom with an atomic number of 14 will have ______electrons in its valence shell.

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A)

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2

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B)

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4

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C)

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8

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D)

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10

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E)

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14

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Answer:

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B

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Diff: 3

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Page Ref: 32; 35

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11)

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Which of the following statements is correct regarding the electrical charge of subatomic particles:

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A)

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protons are positively charged, electrons are neutral, and neutrons are negatively charged

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B)

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protons are positively charged, electrons are negatively charged, and neutrons are neutral

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C)

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protons are negatively charged, electrons are neutral, and neutrons are negatively charged

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D)

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protons are negatively charged, electrons are positively charged, and neutrons are neutral

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E)

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protons are neutral, electrons are negatively charged, and neutrons are positively charged

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Answer:

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B

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Diff: 2

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Page Ref: 29

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12)

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An atom has 6 protons, 8 neutrons, and 6 electrons. Its atomic mass is:

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A)

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2

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B)

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6

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C)

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8

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D)

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14

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E)

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20

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Answer:

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D

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Diff: 2

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Page Ref: 32

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13)

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The atomic number of an atom reveals the number of:

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A)

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electrons in the atomic nucleus

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B)

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protons in the atomic nucleus

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C)

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protons plus neutrons

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D)

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protons plus electrons

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E)

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neutrons plus electrons

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Answer:

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B

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Diff: 1

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Page Ref: 32

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14)

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Isotopes have different numbers of ______; thus they also have different ______.

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A)

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protons; atomic numbers

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B)

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neutrons; atomic masses

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C)

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electrons; atomic numbers

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D)

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protons; atomis masses

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E)

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neutrons; atomic numbers

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Answer:

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B

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Diff: 2

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Page Ref: 33

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15)

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An atom that has lost two electrons is called a(n):

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A)

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isotope

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B)

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anion

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C)

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radioisotope

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D)

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cation

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E)

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proton

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Answer:

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D

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Diff: 3

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Page Ref: 36

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16)

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The subatomic particles that are responsible for the chemical behavior of atoms are the:

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A)

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protons

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B)

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neutrons

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C)

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electrons

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D)

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isotopes

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E)

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ions

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Answer:

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C

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Diff: 2

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Page Ref: 32

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Figure 2.2

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17)

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What is the atomic number of the atom in Figure 2.2:

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A)

1

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2

1

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B)

1

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3

1

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C)

1

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4

1

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D)

1

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6

1

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E)

1

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12

1

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Answer:

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D

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Diff: 3

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Page Ref: 32

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18)

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When a pair of electrons is shared equally between two atoms, the bond formed is called a(n):

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A)

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ionic bond

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B)

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hydrogen bond

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C)

1

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carbon bond

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D)

1

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polar covalent bond

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E)

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nonpolar covalent bond

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Answer:

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E

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Diff: 3

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Page Ref: 37

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19)

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Which of these examples is a compound:

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A)

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H2

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B)

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CH4

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C)

1

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O2

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D)

1

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N2

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E)

1

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2H

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Answer:

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B

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Diff: 2

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Page Ref: 34

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20)

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In order to break a disaccharide down into simple sugar units:

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A)

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water molecules must be added to each bond

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B)

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water molecules must be removed from each bond

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C)

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carbon atoms must be added to each bond

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D)

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carbon atoms must be removed from each bond

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E)

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water molecules and carbon atoms must be removed from each bond

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Answer:

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A

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Diff: 3

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Page Ref: 46

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21)

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The reaction A + B → AB is an example of a(n):

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A)

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exchange reaction

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B)

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synthesis reaction

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C)

1

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decomposition reaction

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D)

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denaturation reaction

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E)

1

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dehydration reaction

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Answer:

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B

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Diff: 2

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Page Ref: 40

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22)

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Water is useful in body processes because:

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A)

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it is a good solvent

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B)

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it acts as an enzyne

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C)

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it has a low heat capacity

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D)

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it is a product in hydrolysis reactions

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E)

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it is chemically inert

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Answer:

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A

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Diff: 3

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Page Ref: 42

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23)

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The joining of amino acids to form a protein is an example of:

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A)

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a decomposition reaction

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B)

1

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an exchange reaction

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C)

1

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a synthesis reaction

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D)

1

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a denaturation reaction

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E)

1

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a hydrolysis reaction

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Answer:

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C

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Diff: 3

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Page Ref: 40; 49

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24)

1

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Which of the following solutions is the weakest acid:

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A)

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a solution with a pH of 2.4

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B)

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a solution with a pH of 5.2

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C)

1

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a solution with a pH of 6.4

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D)

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a solution with a pH of 8.6

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E)

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a solution with a pH of 10.1

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Answer:

1

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C

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Diff: 3

1

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Page Ref: 44

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25)

1

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A solution with a pH of 7:

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A)

1

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is acidic

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B)

1

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releases more hydrogen ions than hydroxyl ions into solution

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C)

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releases more hydroxyl ions than hydrogen ions into solution

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D)

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is basic

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E)

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is neutral

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Answer:

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E

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Diff: 2

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Page Ref: 44

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26)

1

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Which of the following is an example of an inorganic molecule:

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A)

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a fatty acid

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B)

1

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an amino acid

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C)

1

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cholesterol

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D)

1

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sodium chloride

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E)

1

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RNA

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Answer:

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D

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Diff: 3

1

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Page Ref: 42-43

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27)

1

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Vitamin D and sex hormones are both:

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A)

1

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polysaccharides

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B)

1

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proteins

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C)

1

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nucleic acids

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D)

1

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enzymes

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E)

1

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steroids

1

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Answer:

1

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E

1

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Diff: 2

1

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Page Ref: 49

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28)

1

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Glucose and starch are examples of:

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A)

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carbohydrates

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B)

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triglycerides

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C)

1

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phospholipids

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D)

1

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steroids

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E)

1

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proteins

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Answer:

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A

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Diff: 2

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Page Ref: 45-46

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29)

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Which of the following groups of chemicals includes ONLY monosaccharides:

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A)

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glucose, fructose, galactose

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B)

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glucose, fructose, maltose

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C)

1

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fructose, maltose, sucrose

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D)

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fructose, maltose, lactose

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E)

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maltose, sucrose, lactose

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Answer:

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A

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Diff: 2

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30)

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The organic compounds that function in building tissues and acting as enzymes are the:

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A)

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nucleic acids

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B)

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carbohydrates

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C)

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salts

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D)

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