Transcription is a process that occurs in cells. Which is the best description of transcription?
A) A DNA template is used to generate RNA.
B) A DNA sequence is used to activate enzymes in a cell.
C) DNA is copied.
D) A RNA template is used to make proteins.
Ans: A) A DNA template is used to generate RNA.
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The fact that the type R and S strains of Streptococcus pneumoniae that Griffith worked with possessed small differences in capsule structure satisfies which of the following criteria for genetic material?
A. Transmission B. Replication C. Information D. Variation
How does the presence of allolactose affect the lactose operon? a. Allolactose binds to the repressor, altering its shape so it cannot bind to operators
b. Allolactose binds to the operators so the repressor cannot bind there. c. Allolactose binds to the promoter so RNA polymerase may not bind there. d. Allolactose has a homeodomain that binds to specific base sequences in the first gene, blocking transcription.
Which of the following is found in cocoa?
a. Epicatechin. b. Caffeine. c. Resveratrol. d. Curcumin. e. Nicotine.
A cell in the G2 phase:a
has twice the amount of DNA present in a telophase nucleus.
b. has visibly distinct chromosomes. c. lacks a visible nuclear membrane. d. is in mitosis. e. is in cytokinesis.