RNA is composed of four nucleotides, A, U, C, and G. Each codon is composed of three nucleotides. The number of possible codons is
A. 16.
B. 4.
C. 12.
D. 64.
E. 32.
Answer: D
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In the Hershey and Chase experiment, 32P was used to label ____ and 35S was used to label ____
a. RNA; protein b. protein; DNA c. phospholipids; protein d. protein; phospholipids e. DNA; protein
Embryo splitting as a means of reproductive cloning is typically done at the 32- or 64-cell stage
Indicate whether the statement is true or false
In prokaryotes, the term prokaryotic fission specifically refers to
A) the addition of a new plasma membrane between what will become two daughter cells. B) the growth phase of the cell cycle. C) asexual reproduction. D) the attachment of replicated DNA to the plasma membrane.
Which of the following statements about reverse transcription is false?
A) Reverse transcription uses special enzymes called reverse transcriptase. B) Reverse transcription is performed by certain viruses and human cells. C) Reverse transcription requires a particular initiation sequence. D) Reverse transcription builds copy DNA (cDNA). E) Reverse transcription uses RNA as a template.