In the cell cycle, the G1 phase represents ____
a. the stage of DNA synthesis
b. splitting of the chromosomes into chromatids
c. a period of growth
d. the stage of actual cell division
e. the stage just prior to meiosis
ANSWER: c
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The morphology of a cell influences its
A) motility. B) metabolism. C) surface-to-volume ratio. D) motility and surface-to-volume ratio
When David Baltimore’s lab tried to determine how an RNA tumor virus replicates its genome, they
discovered that
a. these viruses can make DNA without an RNA template b. these viruses can make DNA after being treated with RNase c. these viruses can make more RNA genomes from their RNA genome d. an enzyme (reverse transcriptase) makes DNA from RNA e. an enzyme (reverse transcriptase) makes RNA from DNA
What fraction of the time will the cross of Aa Bb Cc with Aa Bb Cc produce an offspring that
expresses the dominant traits A and B and cc (A_ B_ cc)? a. 1/32 b. 3/64 c. 1/16 d. 9/64 e. 27/64
Organisms extract energy stored in glucose through the process of cellular
A.) respiration B.) hypotonic C.) photosynthesis D.) decay