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BIOCHEMISTRY PRACTICE TEST

I, ______, certify that all answers are mine
and mine alone. I also know that any suspicious activity or answers can result in a zero score.

______

Signed Date Period

Section / Score / I would like to Retake / Retake Score
Atoms / /13
Elements of Life / /17
Macromolecules / /20
Water / /5
Characteristics of Living Things / /20
TOTAL / /65

ATOMS

(9pts) FILL IN THE CHART FOR THE PARTS OF AN ATOM.

ATOM PART NAME / CHARGE / LOCATION

(1 pt) Explain the difference between a covalent and an ionic bond.
(1pt) What does it mean for a molecule to be polar?

(1pt) Explain how a Hydrogen Bond Forms.

(1pt) Why are Hydrogen Bonds important to the macromolecules of life?


Elements of Life

(14pts) Fill in the chart below. (This will be a matching question)

ELEMENT NAME / Why is it important to life?



MACROMOLECULES

(12pts)Using the table below list the 4 macromolecules, their building block/monomer, and function in living things.

MACROMOLECULE / MONOMER / FUNCTION

(8pts) For each type of Lipid explain what their function is in the body.

______- ______

______- ______

______- ______

______- ______


WATER

(2pts) Draw and Label a Water Molecule


(3pts)Describe each of the properties of water list below.

Cohesion

Adhesion

Surface Tension


(1pt)Why is it important to life that Ice floats? (hint – think about what would happen to the living things in the lakes and oceans.)


(1pt)Why is it important that water resists temperature change?
CHARACTERISTICS of LIFE

(16 pts) List and describe the Characteristics of all Living Things

Characteristic of Life / Description

Marty Martian was sent to Earth by the Martian government to find life. While on Earth, Marty captured a car and brought it back to Mars. He thought he'd found a good example of life on Earth. The Martian government does not believe that the car Marty brought back is alive. Marty must stand trial for failing to perform his Martian duties.

At the trail, Marty spoke in his defense. "I first saw these life forms rolling along roads in great numbers. They were giving off thick clouds of poisonous waste as they moved. They seemed to exhibit herding behavior, as many of the cars moved in the same direction. They appeared to have a great deal of energy, some of them moved faster than 60 kilometers per hour. When one of these life forms stopped or slow down, the others behind it responded. They slowed down and gave off a reddish light from the back, and sometimes they would make honking noises. I observed that they would stop to feed on a liquid substance."

(1pt) Which characteristics of life did Marty observe the car make?
(1pt) Which Characteristics of life did Marty NOT observe?
(2pt) How can Marty be sure to not make this mistake again?