Transcription starts at a region of DNA called
a(n)
a. sequencer.
b. promoter.
c. activator.
d. terminator.
e. transcriber
B
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A transcriptional regulator that decreases transcription of a gene from a vast distance is known as a(n
A) enhancer. B) upstream control element. C) regulator. D) nonsense mutation. E) silencer.
The Hominidae taxon includes ____
a. only humans b. only humans and chimpanzees c. gorillas, chimpanzees, and humans d. gibbons, orangutans, gorillas, chimpanzees, and humans e. new world monkeys and old world monkeys
Which one of the following statements describes the process through which a primary RNA transcript becomes a functional mRNA?
A) Sections of the primary transcript called exons are removed, and the sections that remain are spliced together. B) Sections of RNA called exons are added to the primary transcript. C) A primary transcript needs no editing and is immediately ready to function as mRNA. D) Noncoding sections of the primary transcript, called introns, are removed, and the remaining coding sections, called exons, are spliced together. E) Random sections of the primary transcript called exons are replaced with sections called introns.
RNA molecules that also act as enzymes are given the name
A. cofactors B. coenzymes C. ribozymes D. allosteric enzymes