In the process of homeoviscous adaptation, cells
A) Alter rates of chemical reactions.
B) Alter membrane fluidity.
C) Alter isozyme ratios.
D) Switch to alternative biochemical pathways.
Answer: B
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Most saliva is produced by the _________ gland
A. parotid B. submandibular C. sublingual D. lingual E. buccal
Movement of the sensory receptors in the ampullae of the semicircular canals
A) produces sound. B) allows us to hear sounds. C) stimulates the receptor cells, alerting us to rotational movement. D) stimulates the receptor cells to a change in body position with respect to gravity. E) allows us to perceive linear acceleration.
The respiratory center is most likely to increase the breathing rate if the
A. pH of body fluids is decreasing. B. pH of body fluids is increasing. C. concentration of carbonic acid is decreasing. D. concentration of sodium bicarbonate is increasing.
A transverse section through the head would divide:
a. the forehead from the chin b. the nose from the back of the head c. the right eye from the left eye d. none of the above