5 Written questions
5 Matching questions
- semiconservative model
- radioactive isotope
- x-ray crystallography
- a Member of the prokaryotic domain Bacteria.
- b An isotope (an atomic form of a chemical element) that is unstable; the nucleus decays spontaneously, giving off detectable particles and energy.
- c 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.
- d 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.
- e 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.
5 Multiple choice questions
- The cellular process that uses specific enzymes to remove and replace incorrectly paired nucleotides.
- The complex of DNA and proteins that makes up a eukaryotic chromosome. When the cell is not dividing, chromatin exists in its dispersed form, as a mass of very long, thin fibers that are not visible with a light microscope.
- A Y-shaped region on a replicating DNA molecule where the parental strands are being unwound and new strands are growing.
- A dense region of DNA in a prokaryotic cell.
- 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.
5 True/False questions
heterochromatin → The less condensed form of eukaryotic chromatin that is available for transcription.
primase → An enzyme that joins RNA nucleotides to make the primer using the parental DNA strand as a template.
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.
deoxyribose → An enzyme that joins RNA nucleotides to make the primer using the parental DNA strand as a template.
euchromatin → The less condensed form of eukaryotic chromatin that is available for transcription.