Age-related changes include
a. taste buds becoming less sensitive.
b. people becoming farsighted.
c. sensory nerve cells in the ear become "worn out."
d. a reduction in male fertility.
e. all of these
E
Biology & Microbiology
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a. True b. False Indicate whether the statement is true or false
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Which of the following types of molecule is secreted by the human brain and acts as a natural pain killer?
1.catecholamine 2.endorphin 3.norepinephrine 4.serotonin
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The region of a prokaryotic cell where the bacterial chromosome (DNA) is located in the
A. cell membrane. B. nucleus. C. cell wall. D. nucleoid. E. ribosome.
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Your cells most readily obtain energy from
A. C6H12O6. B. Glyceraldehyde-3-phosphate. C. ATP. D. NADH2.
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