The genetic code is
A) triplet, overlapping, and not universal.
B) triplet, non-overlapping, and universal.
C) quarternary, overlapping, and non-universal.
D) singular, non-overlapping, and universal.
B) triplet, non-overlapping, and universal.
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Which of the following is/are true about enzymes?
A. Enzymes are proteins that can be denatured by changes in pH or temperature. B. Enzymes are catalysts that speed up reactions. C. Enzymes are highly specific for the substrates they react with and catalyze only one or a limited set of possible reactions with those substrates. D. All of the choices are correct.
Mitochondria and chloroplasts have their own circular DNA and translational components. Indicate whether the statement is true or false
Generally, the senses of the skin are somewhat specialized with
Select one: a. Pacinian corpuscles, Ruffini's endings, and Krause's end bulbs detecting pain. b. Meissner's corpuscles and Merkel's disks detecting fine touch. c. one type of nerve cell detecting both hot and cold. d. all types spread uniformly in the dermal tissue throughout the body. e. temperature receptors, free nerve endings in the dermis.
Histamine, serotonin, and bradykinin are all
A. vasoactive mediators. B. mediators that increase chemotaxis. C. mediators of T-cell activity. D. fever inducers. E. mediators of B-cell activity.