The codon that signals the end of a growing polypeptide is called a _________ codon
Fill in the blank(s) with the appropriate word(s).
Ans: stop
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The difference between the sugar in DNA and the sugar in RNA is that the sugar in DNA _____
A) is a six-carbon sugar and the sugar in RNA is a five-carbon sugar B) can form a double-stranded molecule C) is an aldehyde sugar and the sugar in RNA is a keto sugar D) is in the ? configuration and the sugar in RNA is in the ? configuration E) contains one less oxygen atom
One reason that prokaryotic genes do not contain introns is that
A) the introns are cut out during binary fission. B) due to the short time the bacterium is around as a single organism, a 5' cap and poly (A) tail are added immediately for translation to take place. C) bacterial proteins are very short and not subject to mutation. D) translation sometimes begins before transcription has been completed because prokaryotes do not have a nucleus. E) integrated viral DNA is not recognized for transcription.
Behavior that is entirely controlled by genes and has no learning component is
a. learned. b. habituated. c. instinctive. d. classically conditioned.
Yeast cells that have defective mitochondria incapable of respiration will be able to grow by catabolizing which of the following carbon sources for energy?
A) glucose B) proteins C) fatty acids D) Such yeast cells will not be capable of catabolizing any food molecules, and therefore, will die.