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5 Written questions

5 Matching questions

  1. template strand
  2. terminator
  3. ribosome
  4. nonsense mutation
  5. E site
  1. a In prokaryotes, a special sequence of nucleotides in DNA that marks the end of a gene. It signals RNA polymerase to release the newly made RNA molecule, which then departs from the gene.
  2. b A cell organelle constructed in the nucleolus and functioning as the site of protein synthesis in the cytoplasm; consists of rRNA and protein molecules, which make up two subunits.
  3. c The DNA strand that provides the template for ordering the sequence of nucleotides in an RNA transcript.
  4. d A mutation that changes an amino acid codon to one of the three stop codons, resulting in a shorter and usually nonfunctional protein
  5. e One of a ribosome's three binding sites for tRNA during translation. The place where discharged tRNAs leave the ribosome.

5 Multiple choice questions

  1. A coding region of a eukaryotic gene or expressed region
  2. 1) A deficiency in a chromosome resulting from the loss of a fragment through breakage. (2) A mutational loss of one or more nucleotide pairs from a gene.
  3. A mutation involving the addition of one or more nucleotide pairs to a gene.
  4. The premise that a gene is a segment of DNA that codes for one polypeptide.
  5. within ex: intron

5 True/False questions

  1. TATA boxA rare change in the DNA of a gene, ultimately creating genetic diversity.


  2. promoterA specific nucleotide sequence in DNA that binds RNA polymerase and indicates where to start transcribing RNA


  3. ribozymeAn enzymatic RNA molecule that catalyzes reactions during RNA splicing.


  4. RNA processingModification of RNA before it leaves the nucleus, a process unique to eukaryotes.


  5. trans-opposite ex: anticodon


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