Sertoli cells stimulate sperm production in response to:
A. testosterone and FSH.
B. testosterone and LH.
C. FSH and LH.
D. GnRH and LH
E. testosterone.
A
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The Golgi apparatus is responsible for at least a portion of a eukaryote's (select all the correct choices):
A. carbohydrate synthesis. B. modification of lipids synthesized in the ER. C. targeting of proteins to their final destinations. D. modification of proteins synthesized in the ER.
A population that is growing exponentially in the absence of limiting factors can be illustrated by which curve?
a. S-shaped b. J-shaped c. one that terminates in a plateau phase d. bimodal e. binomial
DNA analysis of mitochondrial and nuclear DNA from the Y chromosome supports the ____ hypothesis of the origin
of the species Homo sapiens. a. out of Africa b. Homo genus c. multiregional d. multinational e. Asian focus
The group that probably gave rise to chloroplasts is the
A. green photosynthetic bacteria. B. purple sulfur bacteria. C. methane bacteria. D. cyanobacteria. E. nonsulfur purple bacteria.