Methanogens
A. are able to live in very salty environments.
B. are methane-producing Archaea.
C. use methane as an energy source.
D. are also known as protists.
B. are methane-producing Archaea.
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When species diversity is calculated, what is being measured?
A. Species number. B. The evapotranspiration rate. C. Both species number and relative abundance. D. The resistance of a community to disturbance. E. The process of inhibition.
The cell membrane can be described most accurately as
A) permeable to most small molecules but impermeable to larger ones. B) permeable to only larger molecules. C) permeable to all molecules. D) permeable to some molecules and impermeable to others. E) impermeable to all polar molecules.
Which of the following involves removing introns and reconnecting exons in a pre- mRNA?
a. splicing b. encoding c. translating d. elongation
A carbohydrate consists of
a. amino acid units. b. one or more sugar units. c. lipid droplets. d. glycerol.