Biology

Question 1

1. An organism achieves growth by
   a. breaking down food
   b. making new cells
   c. enlarging an existing cell
   d. both b and c

Answer 1

D

Question 2

2. In a controlled experiment, researchers are trying to determine the effect of a new pharmaceutical drug on the body’s ability to lose excess weight. Research subjects that do not receive the drug are
   a. part of the experimental group
   b. part of the control group
   c. part of both study groups
   d. not included in the study

Answer 2

B

Question 3

3. In the same experiment described in #2, the weight of the subjects in both the control and experimental groups is the
   a. dependent variable
   b. hypothesis
   c. independent variable
   d. prediction

Answer 3

A

Question 4

4. The scientific term that is most closely equated to “a law of nature” is
   a. model
   b. hypothesis
   c. theory
   d. prediction

Answer 4

C

Question 5

5. If a microbiologist were examining the structure of the receptors on the outer surface of a bacterial cell, she should use a
   a. compound light microscope
   b. scanning electron microscope
   c. transmission electron microscope
   d. all of the above

Answer 5

B

Question 6

1. Any typical cell would be expected to have all of the following except
   a. ribosomes
   b. a cell membrane
   c. DNA in the nucleus
   d. cytoplasm

Answer 6

C

Question 7

2. The primary function of the rough ER is to
   a. synthesize and package proteins
   b. produce cellular energy
   c. synthesize lipids
   d. copy the DNA

Answer 7

A

Question 8

3. Which of the following would be expected in a typical animal cell but not in a plant cell?
   a. ribosomes
   b. mitochondria
   c. chloroplasts
   d. centrioles

Answer 8

D

Question 9

4. The sodium-potassium pump
   a. is a passive transport process
   b. requires ATP
   c. moves sodium into the cell
   d. moves ions down their gradients

Answer 9

B

Question 10

5. When a white blood cell of the immune system is engulfing a bacterium, which process is occurring?
   a. exocytosis
   b. cytolysis
   c. pinocytosis
   d. phagocytosis

Answer 10

D

Question 11

Which of the following molecules is used to send signals throughout the body?
Enzymes
Hormones
Melanin
Neurons

Answer 11

Hormones key word molecules not cells

Question 12

Which of the following happens to skin when underlying blood vessels constrict?
A goosebumps appear on the skin
B the skin becomes flushed and red
C sweat glands release more sweat
D oil glands stop producing

Answer 12

A goosebumps