In order to synthesize deoxyribonucleotides from ribonucleotides, the second carbon of the sugar must be ________.
A. reduced
B. oxidized
C. assimilated
D. phosphorylated
Answer: A
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The salinity of seawater at the equator is:
a. high due to evaporation. b. low due to precipitation. c. high due to freezing. d. low due to river input.
________ are the dominant herbivores of savanna ecosystems
A) Antelopes B) Zebras C) Buffalo D) Insects
Why are neocallimastigomycetes being studied for biofuel production?
A. They can ferment glucose into alcohol. B. They can generate methane. C. They provide energy to power fermentation. D. They can release fermentable sugars from structural polysaccharides. E. They can extract pollutants from biofuel starting materials.
If most of the individuals of a species die when they are young, that species exhibits a(n) ________ survivorship curve
A) declining B) late-loss C) early-loss D) constant-loss E) S-shaped