Which set of codons terminate transcription in most organisms?
A. ACT, TAC, ATT
B. AGU, UAG, UAA
C. TGA, TAG, TAA
D. UGA, UAG, UAA
Answer: D
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Initiation of transcription differs from initiation of DNA replication in several ways. One difference is that initiation of transcription does not require
A. a promoter. B. enzymes. C. a primer. D. a DNA template strand.
Recall that the pancreas helps to maintain normal blood glucose levels. What endocrine organ plays a role in stabilizing blood calcium levels? Select all correct choices
A. The pineal gland B. The posterior pituitary gland C. The adrenal cortex D. The parathyroid gland
All of the following are beneficial characteristics of fungi EXCEPT:
a. They decompose and recycle dead matter. b. They are a source of medicines. c. They are producers that release oxygen. d. They are a food source.
The oxidation-reduction cofactor in the multisubunit enzyme fumarate reductase in E. coli which has the greatest reduction potential is
A) FAD. B) iron clusters. C) ubiquinone. D) menaquinone. E) NADH.