5 Written Questions
5 Matching Questions
- semiconservative model
- Okazaki fragment
- nucleoid region
- a A dense region of DNA in a prokaryotic cell.
- b An enzyme that catalyzes the lengthening of telomeres in eukaryotic germ cells.
- c 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.
- d A short segment of DNA synthesized away from the replication fork on a template strand during DNA replication, many of which are joined together to make up the lagging strand of newly synthesized DNA.
- e 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.
5 Multiple Choice Questions
- An enzyme that joins RNA nucleotides to make the primer using the parental DNA strand as a template.
- 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 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.
- An enzyme that catalyzes the elongation of new DNA (for example, at a replication fork) by the addition of nucleotides to the 3' end of an existing chain. There are several different DNA polymerases; DNA polymerase III and DNA polymerase I play major roles in DNA replication in prokaryotes.
- A virus that infects bacteria; also called a bacteriophage.
5 True/False Questions
heterochromatin → Eukaryotic chromatin that remains highly compacted during interphase and is generally not transcribed.
deoxyribose → An enzyme that catalyzes the lengthening of telomeres in eukaryotic germ cells.
primer → 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.
euchromatin → The less condensed form of eukaryotic chromatin that is available for transcription.
Mismatch repair → Eukaryotic chromatin that remains highly compacted during interphase and is generally not transcribed.