The enzyme reverse transcriptase is found in which of the following viruses?
a) Rhinovirus
b) Herpesvirus
c) Filovirus
d) Retrovirus
Answer: d) Retrovirus
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Tropical climates are warmer than temperate climates because
A. temperate climates have more mountains and thus more snow causing the landmasses to warm slower. B. tropical climates have more vegetation and thus can absorb more heat. C. temperate climates are closer to the poles and the polar surfaces cause a reduction in heat gain. D. tropical climates receive the sun's rays at an almost perpendicular angle; since Earth is a sphere, the temperate climates receive the sun's rays at a much steeper incidence thus spreading the radiation over a broader area. E. tropical climates receive the sun's rays at a much steeper incidence thus spreading the radiation over a broader area and causing the tropics to be warmer while the temperate climates receive the sun's rays at an almost perpendicular angle, which causes some areas to be warm and other areas to be cold.
In animals, somatic cells are ________ and germ cells are __________
A. diploid ; diploid B. diploid ; haploid C. haploid ; diploid D. haploid ; haploid
Ribosomes synthesizing proteins that are to be excreted are located on the ________.
What will be an ideal response?
Antibodies are attached to the surface of a B cell by
A) the light chain of the arm of the antibody. B) the stem of the antibody. C) mucus. D) the heavy chain of the arm of the antibody. E) sticky proteins produced by T cells.