The roles of testosterone in male reproductive function include all of the following EXCEPT
A. stimulating spermatogenesis by the Leydig cells.
B. stimulating spermatogenesis by the Sertoli cells.
C. stimulating growth of the reproductive tract.
D. inhibiting LH secretion.
E. stimulating growth of facial hair.
A. stimulating spermatogenesis by the Leydig cells.
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What will be an ideal response?
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characteristic of "life"? a. organization into cells b. response to environmental change c. reproduction d. inability to change e. using energy
What is the best term for an RNA molecule that possesses catalytic activity?
A. ribozyme B. ribosomal RNA C. RNase D. enzyme
Nucleic acids, proteins, and complex carbohydrates are all produced by
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