The extraordinary accuracy of the DNA polymerase III enzyme lies in its ability to "proofread" newly synthesized DNA, a function of the enzyme's __________
A) 3?-to-5? exonuclease activity
B) 5?-to-3? exonuclease activity
C) 3?-to-5? polymerase activity
D) 5?-to-3? polymerase activity
E) 3?-to-5? helicase activity
A
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Proteins are created with:
A. phosphodiester bonds. B. peptide bonds. C. triglycerides. D. polysaccharides.
Diphtheria is an acute contagious disease caused by an exotoxin that
A. functions by inhibiting protein synthesis. B. can be neutralized as a result of immunity produced by the DTaP vaccine. C. may cause destruction of cardiac, kidney and nerve tissues. D. All of the choices are correct.
In the moss life cycle, the ________ is the dominant generation.
A. diploid sporophyte B. haploid sporophyte C. haploid gametophyte D. diploid gametophyte
The major divisions of the peripheral nervous system are the ____.
A. somatic and autonomic systems B. sympathetic and parasympathetic systems C. peripheral and central systems D. afferent and autonomic systems E. cranial and skeletal nerves