Accelerated Biology Test: Ch 2, 7
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____1.Which of the following is a carbohydrate?
a. / ATP / c. / waxb. / steroid / d. / sucrose
____2.All of the following are examples of lipids except
a. / oil. / c. / steroids.b. / starch. / d. / candle wax.
____3.Which of the following molecules are most closely related to proteins?
a. / amino acids / c. / nucleotidesb. / monosaccharides / d. / sugars
____4.The two types of nucleic acids are
a. / RNA and ATP. / c. / DNA and ATP.b. / DNA and RNA. / d. / nucleotides and ATP.
____5.Amino acids are the building blocks of which macromolecule?
a. / carbohydrate / c. / lipidb. / DNA / d. / protein
____6.The atom present in all organic compounds is
a. / carbon. / d. / sulfur.b. / oxygen. / e. / hydrogen.
c. / nitrogen.
____7.Which of the following is composed of a 1:2:1 ratio of carbon to hydrogen to oxygen?
a. / carbohydrate / d. / nucleic acidb. / protein / e. / steroid
c. / lipid
____8.The molecule on which an enzyme acts is called a(n)
a. / active site / c. / polar moleculeb. / inactive site / d. / substrate
____9.The molecule on which an enzyme acts is called a(n)
a. / active site. / c. / polar molecule.b. / inactive site. / d. / substrate.
____10.Fructose and glucose are
a. / polymers / c. / disaccharides.b. / monosaccharides. / d. / polysaccharides
____11.Refer to the illustration above. Which of the following statements regarding the graph is true?
a. / Reaction 2 occurs faster than Reaction 3 because Reaction 2 requires more energy than Reaction 3.b. / The difference between the graphs shown for Reaction 2 and Reaction 3 occurs because of a difference in the activation energy of these reactions.
c. / Reactant A contains more energy at the beginning of the reaction than product C has at the end of the reaction.
d. / Product B contains more energy at the end of the reaction than reactant A has at the beginning of the reaction.
____12.Refer to the illustration above. Reaction 3 in the graph
a. / probably occurred in the presence of an enzyme.b. / requires more activation energy than Reaction 2.
c. / is the same as Reaction 1, but faster.
d. / is slower than Reaction 2.
____13.Which element is found in proteins but not carbohydrates or lipids?
a. / C / c. / Nb. / H / d. / O
____14.The first carbon compounds that scientists studied were called _____ compounds because they came from living organisms.
a. / water / c. / homogeneousb. / organic / d. / biological
____15.Lipids have a larger portion of the elements ___ and ___ compared to the element ___.
a. / C, O, H / c. / C, H, Ob. / O, H, C / d. / H, O, C
____16.______helps with contracting muscles.
a. / lipids / c. / carbohydratesb. / proteins / d. / nucleic acids
____17.The place where the enzyme and substrate fit together is called
a. / active site / c. / productb. / inactive site / d. / substrate
____18.When an enzyme becomes denatured
a. / the substrate will fit into the enzyme and cause a reactionb. / the substrate will not fit into the enzyme and cause a reaction
c. / the substrate will fit into the enzyme and not cause a reaction
d. / the substrate will not fit into the enzyme and not cause a reaction
____19.When the substrate fits into the enzyme they mold together to start a reaction and then form a product. This is called
a. / lock and key model / c. / fluid mosaic modelb. / induced fit model / d. / none of these
____20.A substance with a pH of 4 is called
a. / an acid / c. / both an acid and a baseb. / a base / d. / neither an acid nor a base
____21.A monosaccharide is a
a. / carbohydrate / c. / nucleic acidb. / lipid / d. / protein
____22.When hydrogen and oxygen combine to form water, water would be
a. / a product / c. / both a product and a reactantb. / a reactant / d. / neither a product nor a reactant
____23.Enzymes affect the reactions in living cells by changing the
a. / products of the reaction. / c. / temperature of the reaction.b. / speed of the reaction. / d. / pH of the reaction.
____24.Which of the following organic compounds is the main source of energy for living things?
a. / carbohydrates / c. / nucleic acidsb. / lipids / d. / proteins
____25.What is the process that changes one set of chemicals into another set of chemicals?
a. / cohesion / c. / chemical reactionb. / adhesion / d. / dissolving
____26.What is the term used to describe the energy needed to get a reaction started?
a. / adhesion energy / c. / cohesion energyb. / activation energy / d. / chemical energy
____27.A substance that speeds up the rate of a chemical reaction is called a(an)
a. / catalyst / c. / moleculeb. / lipid / d. / element
____28.A solution with a pH of 11 is
a. / acidic / c. / neutralb. / basic / d. / neutral
____29.In humans and other multicellular organisms, which substance plays a central role as an energy source?
a. / carbohydrate / c. / proteinb. / fat / d. / water
____30.Glycogen, used to store energy in the liver and muscle tissue, is an example of which type of molecule?
a. / carbohydrate / c. / saturated fatty acidb. / protein / d. / steroid
____31.An organism’s genetic informaiton is stored in which type of macromolecule?
a. / DNA / c. / lipidb. / carbohydrate / d. / protein
____32.Which of the following is NOT a function of proteins?
a. / store and transmit heredityb. / help to fight disease
c. / control the rate of reactions and regulate cell processes
d. / used to form bones and muscles
Accelerated Biology Test: Ch 2, 7
Answer Section
MULTIPLE CHOICE
1.ANS:DPTS:1DIF:IOBJ:3.3.2
2.ANS:BPTS:1DIF:IIOBJ:3.3.3
3.ANS:APTS:1DIF:IIIOBJ:3.3.4
4.ANS:BPTS:1DIF:IOBJ:3.3.5
5.ANS:D
6.ANS:APTS:1DIF:Easy
7.ANS:APTS:1DIF:Difficult
8.ANS:DPTS:1DIF:IIOBJ:3.4.2
9.ANS:DPTS:1DIF:IOBJ:3.4.3
10.ANS:BPTS:1DIF:Moderate
11.ANS:BPTS:1DIF:IIIOBJ:3.4.2
12.ANS:APTS:1DIF:IIIOBJ:3.4.3
13.ANS:C
14.ANS:BPTS:1
15.ANS:CPTS:1
16.ANS:BPTS:1
17.ANS:APTS:1
18.ANS:DPTS:1
19.ANS:BPTS:1
20.ANS:APTS:1
21.ANS:APTS:1
22.ANS:APTS:1
23.ANS:BPTS:1REF:p. 51
24.ANS:A
25.ANS:C
26.ANS:B
27.ANS:APTS:1DIF:Easy
28.ANS:BPTS:1DIF:Easy
29.ANS:APTS:1
30.ANS:APTS:1
31.ANS:APTS:1
32.ANS:APTS:1