5 Written questions
5 Matching questions
- radioactive isotope
- Single-strand DNA-binding protein (SSBPs)
- double helix
- semiconservative model
- a The sugar component of DNA nucleotides, having one fewer hydroxyl group than ribose, the sugar component of RNA nucleotides.
- b 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.
- c The form of native DNA, referring to its two adjacent antiparallel polynucleotide strands wound around an imaginary axis into a spiral shape.
- d 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.
- e An isotope (an atomic form of a chemical element) that is unstable; the nucleus decays spontaneously, giving off detectable particles and energy.
5 Multiple choice questions
- An enzyme that catalyzes the lengthening of telomeres in eukaryotic germ cells.
- A discontinuously synthesized DNA strand that elongates by means of Okazaki fragments, each synthesized in a 5'3' direction away from the replication fork.
- 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.
- The less condensed form of eukaryotic chromatin that is available for transcription.
- One of two prokaryotic domains, the other being Archaea.
5 True/False questions
origin of replication → Site where the replication of a DNA molecule begins, consisting of a specific sequence of nucleotides.
repetitive DNA → A Y-shaped region on a replicating DNA molecule where the parental strands are being unwound and new strands are growing.
nucleosome → 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.
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.
template strand → The new complementary DNA strand synthesized continuously along the template strand toward the replication fork in the mandatory 5'?3' direction.