What stimulates spermatogenesis?
A. FSH
B. Progesterone
C. LH
D. Estradiol
E. Testosterone
Answer: A
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What adaptation do organisms have that tolerate high pressures?
A) decreased cell size B) decreased lipid content C) increased ribosome size D) increased unsaturated fatty acids
Secondary metabolites are produced to
A. deter herbivores. B. deter competitors. C. aid in reproduction. D. aid in growth. E. deter competitors and aid in reproduction.
Golden rice was genetically engineered to
a. produce vitamin B12. b. produce vitamin A. c. bind minute gold molecules. d. grow twice as fast as normal rice. e. do all of these.
An infectious disease researcher isolates the pathogen responsible for an emerging disease. The microbe is grown in the lab. A preparation of the laboratory-grown microbe is treated with a lethal dose of ionizing radiation and then tested for its
potential as a vaccine. What type of vaccine is this? A) attenuated B) subunit C) combination D) toxoid E) inactivated whole