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5 Written questions

5 Matching questions

  1. Repressible enzymes
  2. Nucleotides
  3. Central dogma of molecular biology
  4. C is pair with
  5. genetics
  1. a 1) Routinely synthesized 2) Generally involved in biosynthesis
  2. b Study of transfer of genes
  3. c Includes 1) Phosphate group 2) 5 carbon sugar -> Deoxyribose 3) Nucleotides bond covalently between the 5'PO4 of one nucleotide and the 3'OH of another -> Joining of nucleotides creates an alternating sugar-phosphate backbone
  4. d G -> C:G. G is bound to C by three hydrogen bond
  5. e Flow of information from DNA to RNA to protein

5 Multiple choice questions

  1. Are 1) Adenine (A) - purine, 2) Thymine (T) - pyrimidine 3) Guanine (G) - purine 4) Cytosine (C) - pyrimidine
  2. T -> A:T. A is bound to T by two hydrogen bonds
  3. 1) Complete set of genetic information referred 2) Genome of all cells is composed of DNA ->Some viruses have RNA genome 2) Functional unit of genome is the gene 3) Gene codes for gene product -> Gene product is most commonly protein
  4. Mechanisms to enhance survivability 1) Antigenic variation 2)
  5. RNA is deciphered to synthesize protein 1) Two more RNA molecules become involved in translation 1.1) Ribosomal RNA (rRNA) 1.2) Transfer RNA (tRNA) 2) The language of mRNA is in the form of codons 3) There are 64 codons that make up the "alphabet" of proteins 4) Codons contained in mRNA are read into proteins through translation 4.1) The site of translation is the ribosome 4.2) In response to each codon, tRNA brings the appropriate amino acid to the site of translation 4.3) Each codon has an anticodon -> The anticodon is complementary sequence to the codon

5 True/False questions

  1. (A)Adenine

          

  2. Reading frameEnzyme that synthesizes RNA using single stranded DNA as a template; synthesis always occur in the 5' to 3' direction.

          

  3. CodonSequence of 3 nucleotides in a tRNA molecule that is complementary to a particular codon in mRNA. The anticodon allows the tRNA to recognize and bind to the appropriate codon.

          

  4. 3' refers to3'OH -> 1 strand of the DNA has a hydroxyl group attached to the number 3 carbon of the sugar. -> Termed the three prime (3') end

          

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

          

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