5 Written questions
5 Matching questions
- nucleoid region
- origin of replication
- a Eukaryotic chromatin that remains highly compacted during interphase and is generally not transcribed.
- b One of two prokaryotic domains, the other being Archaea.
- c A dense region of DNA in a prokaryotic cell.
- d Site where the replication of a DNA molecule begins, consisting of a specific sequence of nucleotides.
- e 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.
5 Multiple choice questions
- A Y-shaped region on a replicating DNA molecule where the parental strands are being unwound and new strands are growing.
- The DNA strand that provides the pattern, or template, for ordering the sequence of nucleotides in an RNA transcript.
- 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.
- A virus that infects bacteria; also called a bacteriophage.
- A discontinuously synthesized DNA strand that elongates by means of Okazaki fragments, each synthesized in a 5'3' direction away from the replication fork.
5 True/False questions
bacterium → Member of the prokaryotic domain Bacteria.
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.
DNA polymerase → 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.
Leading strand → The new complementary DNA strand synthesized continuously along the template strand toward the replication fork in the mandatory 5'?3' direction.
primer → An enzyme that joins RNA nucleotides to make the primer using the parental DNA strand as a template.