Planting a single crop such as soybeans in a large area year after year enables efficient.
a) harvesting of crops
b) all of the other choices
c) sowing of crops
d) tending of crops
Ans: b) all of the other choices
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Recently a methanotrophic proteobacterium was reported that oxidizes methane in anoxic environments by coupling methanotrophy with nitrite reduction, known as ________. In this process of reducing nitrite (NO2-) to nitrogen gas (N2), molecular oxygen is released within the microbe, which it harnesses for methane oxidation.
Fill in the blank(s) with the appropriate word(s).
When proteins are broken down into their subunits, what happens to the amino group removed from the
amino acids that are not used to rebuild proteins or other molecules?
a. They are formed into acetyl-CoA. b. They are converted into pyruvate. c. They are excreted in theurine. d. They are stored as glycogen in liver. e. They are stored in vacuoles in muscle.
The ability to determine an object's location using high frequency sound waves is exhibited by
A. bats flying in darkness. B. owls hunting at night. C. whales and dolphins at sea. D. amphibians underwater.
Which type of vaccine involves using a weakened pathogen incapable of replicating?
A) Subunit vaccines B) Attenuated vaccines C) Inactivated vaccines D) DNA vaccines E) None of these choices