Every HIV particle contains two RNA molecules. If two genes from one RNA molecule become detached and then, as a unit, get attached to one end of the other RNA molecule within a single HIV particle, which of these is true?
A) There are now fewer genes within the viral particle.
B) There are now more genes within the viral particle.
C) A point substitution mutation has occurred in the retroviral genome.
D) One of the RNA molecules has experienced gene duplication as the result of translocation.
D
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Which sequence of events is most CORRECT for the initiation and elongation steps of translation?
(1) initiator tRNA binds start codon on mRNA (2) small ribosomal subunit binds to mRNA (3) large ribosomal subunit binds (4) tRNA entry and peptidyl transfer reaction (5) translocation of ribosome and release of tRNA A. 1, 2, 3, 4, 5 B. 1, 2, 3, 5, 4 C. 1, 3, 2, 4, 5 D. 2, 3, 1, 5, 4 E. 2, 1, 3, 4, 5
____ does not contribute to genetic variety.
A. Independent assortment B. Cytokinesis C. Sexual reproduction D. Crossing-over
During transcription, which strand of a DNA molecule is copied into mRNA?
a. the non-template strand b. both strands of the DNA c. the strand that has the same polarity as the mRNA d. the template strand
In photosynthesis, carbon dioxide gas is reduced and combined to form glucose. This is an example of
A. catabolism. B. exergonic. C. metabolism. D. anabolism. E. hydrolysis.