Luteinizing hormone (LH) and follicle-stimulating hormone (FSH) are
a. constantly secreted into the bloodstream of males.
b. produced in both male and female humans.
c. produced in the ovaries.
d. produced in the testes.
e. only produced in female humans.
B
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An adaptation of the marine iguana for cold water is
a. rete marible to keep exchange heat. b. blubber to keep heat in. c. dark skin to absorb the sun's heating radiation. d. increased metabolism.
A mutation in the DNA-binding domain of a steroid hormone receptor is most likely to affect what aspect of receptor function?
A. The binding of the hormone to the receptor B. The cellular response to the hormone C. The translocation of the receptor to the nucleus D. The conformational change of the receptor
Not all vertebrates are considered chordates because not all of them possess tails as adults.
a. true b. false
Why is the energy generated from the catabolism of sugars and other macromolecules ultimately harnessed to generate ATP?
A. ATP can be used by cells to drive endergonic reactions. B. ATP is required to generate the proton gradient in the intermembrane space of mitochondria. C. ATP synthesis is an exergonic reaction. D. ATP can be used to make RNA, which is an energy storage molecule in the cell.