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5 Written questions

5 Matching questions

  1. bidirectional
  2. Transcript
  3. C is pair with
  4. mRNA
  5. 5' refers to
  1. a 5'PO4. 1 strand of the DNA has a phosphate attached at the number 5 carbon of the sugar. -> Termed the five prime (5') end
  2. b Replication is bidirectional -> Replication begins at specific starting point -> Proceeds in opposite directions -> Allows replication to proceed more quickly
  3. c Messenger RNA -> type of RNA molecule that is translated during protein synthesis.
  4. d Is a fragment of RNA. Numerous transcripts can be produced from one chromosome
  5. e G -> C:G. G is bound to C by three hydrogen bond

5 Multiple choice questions

  1. T -> A:T. A is bound to T by two hydrogen bonds
  2. 1) Strands are complementary to each other -> Due to the specific base pairing of bases -> A:T and C:G 2) Strands are held together with hydrogen bonds -> A is bound to T by two hydrogen bonds and G is bound to C by three hydrogen bond
  3. 1) Not all genes subjected to regulation 2) Enzymes can be classified according to characteristics of regulation 2.1) Constitutive enzymes 2.2) Inducible enzymes 2.3) Repressible enzymes
  4. Adenine
  5. Is when you separate the 2 strands of a DNA

5 True/False questions

  1. Reading frameGrouping of a stretch of nucleotides into sequential triplets; an mRNA molecule has 3 reading frames, but only 1 is typically used in translation.

          

  2. Antigenic variationAlteration in characteristics of certain surface proteins -> Example: Neisseria gonorrhoeae hides from host immunity by changing numerous surface proteins

          

  3. RNA polymeraseGrouping of a stretch of nucleotides into sequential triplets; an mRNA molecule has 3 reading frames, but only 1 is typically used in translation.

          

  4. Constitutive enzymesInducible enzymes -> Not regularly produced -> turned on in certain conditions -> Β-galactosidase

          

  5. (C)Thymine