NAME

Question types


Start with


Question limit

of 37 available terms

Advertisement Upgrade to remove ads
Print test

5 Written questions

5 Matching questions

  1. template strand
  2. phage
  3. replication fork
  4. histone
  5. Single-strand DNA-binding protein (SSBPs)
  1. a 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.
  2. b The DNA strand that provides the pattern, or template, for ordering the sequence of nucleotides in an RNA transcript.
  3. c A Y-shaped region on a replicating DNA molecule where the parental strands are being unwound and new strands are growing.
  4. d 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. e A virus that infects bacteria; also called a bacteriophage.

5 Multiple choice questions

  1. A technique that depends on the diffraction of an X-ray beam by the individual atoms of a crystallized molecule to study the three-dimensional structure of the molecule.
  2. One of two types of nitrogenous bases found in nucleotides, characterized by a six-membered ring. Cytosine (C), thymine (T), and uracil (U) are pyrimidines.
  3. 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.
  4. 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. A dense region of DNA in a prokaryotic cell.

5 True/False questions

  1. radioactive isotopeA virus that infects bacteria; also called a phage.

          

  2. topoisomeraseA 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.

          

  3. bacteriophageA virus that infects bacteria; also called a phage.

          

  4. Leading strandA discontinuously synthesized DNA strand that elongates by means of Okazaki fragments, each synthesized in a 5'3' direction away from the replication fork.

          

  5. DNA polymeraseA linking enzyme essential for DNA replication; catalyzes the covalent bonding of the 3' end of one DNA fragment (such as an Okazaki fragment) to the 5' end of another DNA fragment (such as a growing DNA chain).