5 Written questions
5 Matching questions
- Single-strand DNA-binding protein (SSBPs)
- replication fork
- a A short stretch of RNA with a free 3' end, bound by complementary base pairing to the template strand, that is elongated with DNA nucleotides during DNA replication.
- b The basic, bead-like unit of DNA packing in eukaryotes, consisting of a segment of DNA wound around a protein core composed of two copies of each of four types of histone.
- c One of two prokaryotic domains, the other being Archaea.
- d A Y-shaped region on a replicating DNA molecule where the parental strands are being unwound and new strands are growing.
- e A protein that binds to the unpaired DNA strands during DNA replication, stabilizing them and holding them apart while they serve as templates for the synthesis of complementary strands of DNA.
5 Multiple choice questions
- A dense region of DNA in a prokaryotic cell.
- An enzyme that joins RNA nucleotides to make the primer using the parental DNA strand as a template.
- The DNA strand that provides the pattern, or template, for ordering the sequence of nucleotides in an RNA transcript.
- An enzyme that untwists the double helix of DNA at the replication forks, separating the two strands and making them available as template strands.
- The complex of DNA and proteins that makes up a eukaryotic chromosome. When the cell is not dividing, chromatin exists in its dispersed form, as a mass of very long, thin fibers that are not visible with a light microscope.
5 True/False questions
DNA ligase → An enzyme that cuts DNA or RNA, either removing one or a few bases or hydrolyzing the DNA or RNA completely into its component nucleotides.
telomere → The tandemly repetitive DNA at the end of a eukaryotic chromosome's DNA molecule that protects the organism's genes from being eroded during successive rounds of replication. See also repetitive DNA.
telomerase → An enzyme that catalyzes the lengthening of telomeres in eukaryotic germ cells.
pyrimidine → An enzyme that joins RNA nucleotides to make the primer using the parental DNA strand as a template.
semiconservative model → Type of DNA replication in which the replicated double helix consists of one old strand, derived from the old molecule, and one newly made strand.