1. when a person does strenuous exercise, small blood vessels (capillaries) near the surface of the skin increase in diameter. this change allows the body to be cooled. which of the following best illustrates these statements?

1points
a
excretion

b
homeostasis

c
locomotion

d
synthesis

2. which characteristic is shared by all prokaryotes and eukaryotes?

1points
a
ability to store hereditary information

b
use of cellular respiration for energy release

c
use of organelles to control cell processes

d
ability to move in response to environmental stimuli

3. which cell structures are correctly paired with their functions?

1points
a
the mitochondria produce enzymes and ribosomes transport them.

b
the ribosomes make proteins and the nucleus stores genetic information.

c
the cell membrane makes enzymes and cytoplasm transports them.

d
the vacuole stores genetic information and chloroplasts make proteins.

4. what term describes the light-absorbing molecule that plants use to absorb energy?

1points
a
grana

b
pigments

c
stroma

d
thylakoids