Quiz 4

Which of the following does cytosine pair with?

• guanine

• thymine

• adenine

• a pyrimidine

DNA replicates by which of the following models?

• conservative

• semiconservative

• dispersive

• none of the above

The initial mechanism for repairing nucleotide errors in

DNA is ________.

• mismatch repair

• thymine dimers

• DNA polymerase proofreading

• nucleotide excision repair

A promoter is ________.

• a specific sequence of DNA nucleotides

• a specific sequence of RNA nucleotides

• a protein that binds to DNA

• an enzyme that synthesizes RNA

Portions of eukaryotic mRNA sequence that are

removed during RNA processing are ________.

• exons

• caps

• poly-A tails

• introns

The RNA components of ribosomes are synthesized in

the ________.

• cytoplasm

• nucleus

• nucleolus

• endoplasmic reticulum

Control of gene expression in eukaryotic cells occurs

at which level(s)?

• only the transcriptional level

• epigenetic and transcriptional levels

• epigenetic, transcriptional, and translational

  levels

• epigenetic, transcriptional, post-transcriptional,

  translational, and post-translational levels