Which biome has the shortest growing season?
a. tundra
b. taiga
c. grassland
d. desert
e. tropical rain forest
a
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Eukaryotes have three nuclear RNA polymerases. The primary function of RNA polymerase II is transcription of _____
A) only rRNA-coding genes B) only tRNA-coding genes C) both rRNA- and tRNA-coding genes D) protein-coding genes
Which of the following structures allow aquatic bacteria to orient themselves in the Earth's magnetic field?
A) Carboxysomes B) Gas vacuoles C) Magnetosomes D) Polyphosphate granules
Substrate-level phosphorylation transfers phosphate groups directly from ____ to ADP.
A. a substrate B. coenzymes C. the electron transfer chain D. ATP E. the citric acid cycle
Plaque assays are used for
A) evaluating the cancer-causing ability of a virus. B) determining the density of phage in a culture. C) the study of prions. D) cultivating viruses that cannot be grown any other way. E) counting the number of latent phages in a cell.