Which of the following is NOT involved in a
feedback loop in the male reproductive system?
a. anterior pituitary
b. hypothalamus
c. adrenal gland
d. Sertoli cells
e. Leydig cells
Answer: c
Biology & Microbiology
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As fatigue increases, the risk of injury ______.
a. stays the same b. becomes unavoidable c. increases d. decreases
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Herbivores would usually be placed in which trophic level?
A) third B) either the third or fourth C) second D) fourth E) first
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The "synthesis" part of photosynthesis is the Calvin cycle, which occurs in the:
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