Sperm cells are indicated by the letter ____
a. A
b. B
c. C
d. D
e. E
ANSWER: a
Biology & Microbiology
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The gray matter that surrounds cells 3, 4, 5 and 6 indicates the
a. primordial germ cell. b. spermatogonium. c. Leydig cell. d. Sertoli cell. e. Ballack cell.
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Which of the following could be electron acceptors in anaerobic respiration?
A. nitrate or oxygen B. sulfate or oxygen C. lactic acid D. nitrate or sulfate E. All of the answer choices are correct.
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Cooking an egg alters its appearance due to
What will be an ideal response?
Biology & Microbiology
The cranial bones that house the organs of hearing are the ________ bones.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology