Ammonia _____
A) is soluble in water
B) can be stored in the body as a precipitate
C) has low toxicity relative to urea
D) is metabolically more expensive to synthesize than urea
E) is the major nitrogenous waste excreted by insects
Answer: A
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One reason angiosperms are more successful than gymnosperms is because gymnosperms lack _____
a. seeds b. megaspores c. fruits d. leaves e. wood
The most common measurement of energy in biological systems is the kilocalorie. This is the amount of energy that would be required to raise the temperature of what quantity of water one degree Celsius?
A. 1 g B. 10 g C. 10,000 g D. 0.1 g E. 1,000 g
Sperm is indicated by
a. A. b. B. c. C. d. D. e. E.
Milk production in women is stimulated by
a. estrogen. b. prolactin. c. oxytocin. d. prostaglandin. e. progesterone.