5 Written questions
5 Matching questions
- Mismatch repair
- radioactive isotope
- a An enzyme that joins RNA nucleotides to make the primer using the parental DNA strand as a template.
- 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 The cellular process that uses specific enzymes to remove and replace incorrectly paired nucleotides.
- d A dense region of DNA in a prokaryotic cell.
- 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
- The sugar component of DNA nucleotides, having one fewer hydroxyl group than ribose, the sugar component of RNA nucleotides.
- A small protein with a high proportion of positively charged amino acids that binds to the negatively charged DNA and plays a key role in chromatin structure.
- The less condensed form of eukaryotic chromatin that is available for transcription.
- 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.
- A Y-shaped region on a replicating DNA molecule where the parental strands are being unwound and new strands are growing.
5 True/False questions
nucleotide excision repair → A dense region of DNA in a prokaryotic cell.
phage → An enzyme that joins RNA nucleotides to make the primer using the parental DNA strand as a template.
topoisomerase → A protein that breaks, swivels, and rejoins DNA strands. During DNA replication, topoisomerase helps to relieve strain in the double helix ahead of the replication fork.
bacteriophage → One of two prokaryotic domains, the other being Archaea.
chromatin → The less condensed form of eukaryotic chromatin that is available for transcription.