Mg2+ is a ______________for DNA polymerase, while nicotinamide adenine dinucleotide (NAD) is a _____________ for salicylate hydroxylase, which is called a(n) _____________if NAD is not bound
A. cofactor / coenzyme / holoenzyme
B. coenzyme / cofactor / holoenzyme
C. cofactor / coenzyme / apoenzyme
D. coenzyme / cofactor / apoenzyme
E. None of these choices is correct.
C
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Disturbances in sensory neurons will result in an action potential if the
a. stimulus is graded. b. stimulus remains local. c. graded stimulus reaches a trigger zone. d. localized stimuli do not spread far. e. stimuli become downgraded to localized ones.
Which type of transcription are the proteins called transcription factors involved in?
a. elongation b. initiation c. termination d. stabilization
Examine the phylogenetic tree depicted in Figure 26.17 as you address the following questions. The Crenarcheota, Korarchaeota, and Thaumarchaeota are three divisions within the Archaea that share a common ancestor
A. true B. false
Individuals with mutations in excision repair enzymes may suffer from ____ due to unrepaired DNA damage caused
by ____. a. skin cancer; mutations inherited from their parents b. colon cancer; the passing of DNA mutations to daughter cells c. prostate cancer; telomerase d. skin cancer; the sun’s UV rays e. skin cancer; complementary base pairing