During the “gap” phases of the cell cycle, most of
the activity is directed toward
a. DNA replication.
b. nuclear membrane synthesis.
c. resting for the next step.
d. sorting the chromosomes.
e. growing and synthesizing proteins
Answer: e
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Frederick Griffith is responsible for discovering what process?
A. Replication B. Transmission C. Transformation D. Transduction
The K-T boundary is a layer present in strata worldwide that marks the boundary between the ________ periods, when ________
a. Proterozoic-Cambrian / oxygen accumulated in the atmosphere b. Cretaceous-Tertiary / an asteroid impact caused the extinction of the dinosaurs c. Triassic-Jurassic / dinosaurs appeared d. Devonian-Carboniferous / land tetrapods appeared
The function of DNA ligase in recombinant technology is to
A. carry DNA into a new cell. B. cut DNA into many fragments. C. seal DNA into an opening created by restriction enzymes. D. separate fragments of DNA by their length and electrical charges. E. make millions of copies of a specific segment of DNA.
Stages of the cell cycle (G1, S, G2) during which growth and DNA synthesis occur when the nucleus is not actively dividing.
What will be an ideal response?