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5 Written questions

5 Matching questions

  1. deoxyribose
  2. heterochromatin
  3. phage
  4. bacteria
  5. Leading strand
  1. a A virus that infects bacteria; also called a bacteriophage.
  2. b Eukaryotic chromatin that remains highly compacted during interphase and is generally not transcribed.
  3. c One of two prokaryotic domains, the other being Archaea.
  4. d The sugar component of DNA nucleotides, having one fewer hydroxyl group than ribose, the sugar component of RNA nucleotides.
  5. e The new complementary DNA strand synthesized continuously along the template strand toward the replication fork in the mandatory 5'?3' direction.

5 Multiple choice questions

  1. The DNA strand that provides the pattern, or template, for ordering the sequence of nucleotides in an RNA transcript.
  2. A Y-shaped region on a replicating DNA molecule where the parental strands are being unwound and new strands are growing.
  3. A dense region of DNA in a prokaryotic cell.
  4. 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. 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.

5 True/False questions

  1. DNA polymeraseAn 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.

          

  2. nucleoidA dense region of DNA in a prokaryotic cell.

          

  3. bacteriophageOne of two prokaryotic domains, the other being Archaea.

          

  4. Okazaki fragmentA virus that infects bacteria; also called a phage.

          

  5. pyrimidineAn enzyme that joins RNA nucleotides to make the primer using the parental DNA strand as a template.

          

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