The purpose of adding liver extract in Ames test is:
A. Digest metabolites.
B. Digest the tested compound to produce metabolites
C. Digest mutagens.
D. Digest carcinogens.
Answer: C. Digest mutagens.
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The distinct archaeal gene versions of Thaumarchaeota that oxidize ammonia into hydroxyl-amine (NH2OH) is catalyzed by ________.
A. ammonium dismutase (ADM) B. methanofuran (MFR) C. ammonia monooxygenase (AMO) D. methylaspartate pathway (MAP)
An animal's reward for pollinating a flower may include all of the following except ________
a. seeds b. high-energy oils c. the illusion of sexual intercourse d. nectar and pollen
Which is most like an exoskeleton?
A) springs in a mattress B) a water balloon C) a suit of armor D) the hair covering the surface of a bear
Transgenic crop plants have been created that do all of the following except
a. grow two kinds of crops, like the pomato which produces both tomatoes and potatoes. b. are resistant to insect damage. c. are resistant to herbicides. d. produce human hormones or antibodies. e. transgenic plants have been produced that can do all of the things listed.