Spermatogenesis
A. occurs in the seminiferous tubules.
B. begins at birth.
C. involves one cell dividing into 4 by mitosis.
D. produces a few hundred cells per day.
A. occurs in the seminiferous tubules.
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In the absence of environmental sources of water, such as precipitation or condensation, how would water get into the pitcher of a carnivorous plant?
A. through the phloem B. from the fruit C. from the cuticle D. through the xylem E. from the leaves
Adaptations of the kangaroo rat to living in the dry,
hot environment of the southwestern United States include a. behavioral modifications that result in nocturnal activity patterns and daytime staying in burrows. b. a kidney that conserves body water better than that of humans. c. the ability to utilize water produced in the metabolism of carbohydrates. d. mechanisms that reduce evaporative water loss from the respiratory system. e. all of these.
Metabolic reactions fall under two general categories: anabolic and catabolic. What type of chemical reactions are these two classes of metabolic reactions?
A. Anabolic reactions are endergonic reactions, whereas catabolic reactions are exergonic. B. Both anabolic and catabolic reactions are exergonic. C. Anabolic reactions are exergonic reactions, whereas catabolic reactions are endergonic. D. Both anabolic and catabolic reactions are endergonic.
The most common type of transplant involves an (allograft/autograft/isograft)
What will be an ideal response?