The RNA copy of DNA that leaves the nucleus and travels to the cytoplasm to make proteins is
A. RNA polymerase.
B. ribosomal RNA.
C. tRNA.
D. mRNA.
Answer: D
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One of the following does not occur in RNA
A. Adenin B. Guanin C. Uracyl D. Thymine E. Cytosin
One of your friends is an excellent pianist. Which of the following could be used to describe your
friend?
a. The limbic system is very well developed. b. The right hemisphere is well developed for music. c. The left hemisphere is well developed for music. d. The reticular formation is well developed. e. The right hemisphere is well developed for control over the right side of the body.
How does complement help in defense against bacterial invasion?
A) It promotes phagocytosis. B) It neutralizes bacterial toxins. C) It prevents bacteria from penetrating the skin. D) It fuses lysosomal granules to bacterial cell walls.
For which of the following can Koch's postulates be used to identify the organism causing the disease?
a. Streptococcus pyogenes, the organism that causes strep throat, which can be cultured on blood agar in the laboratory b. Treponema pallidum, the causative agent of syphilis, which cannot be grown in the laboratory c. HIV (human immunodeficiency virus), the agent causing AIDS, a disease of the human immune system d. Allergies