The movement of oxygen from an area of high concentration to an area of low concentration is an example of
A) osmosis.
B) active transport.
C) diffusion.
D) facilitated transport.
E) filtration.
C
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The category of reactions in which larger molecules are broken down into smaller ones is known as
A. anabolism.?B. catabolism.?C. synthesis.?D. homeostasis.?E. enzymatic.
Which of the following statements concerning testosterone is true?
A. It prevents hair loss in pattern baldness. B. It can lead to an increase in muscle mass. C. It promotes atrophy of the larynx. D. It decreases metabolic rate in males. E. It causes the skin and hair to soften.
The volume of blood ejected from each ventricle during a contraction is called the
A) end-diastolic volume. B) end-systolic volume. C) stroke volume. D) cardiac output. E) cardiac reserve.
Which structures develop into the retina?
A) optic vesicles B) cornea C) optic nerve D) inner and outer layers of the optic cup E) lacrimal apparatus