AQA Biology Unit 5

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1. What is the role of RNA polymerase in transcription?

  • Join RNA nucleotides together to form a strand with phosphodiester bonds
  • Join DNA nucleotides together to form a strand with hydrogen bonds
  • Join DNA nucleotides together to form a strand with phosphodiester bonds
  • Join RNA nucleotides together to form a strand with hydrogen bonds
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2. Name the enzyme used to cut a gene

  • Restriction Endonuclase
  • Reverse Transciptase
  • DNA Ligase
  • DNA helicase

3. What is the role of troponin?

  • To bind to Calcuim ions causing tropmyosin to move, exposing actin binding sites
  • To activate ATPase
  • To bind to tropmyosin
  • To form a cross bridge between myosin and troponin

4. Which is a difference between mRNA and tRNA?

  • mRNA has an amino acid binding site, tRNA doesnt
  • tRNA is linear,mRNA is clover-leafed shaped
  • tRNA as hydrogen bonds, mRNA doesnt
  • tRNA has a codon, mRNA has an anticodon

5. How does insulin affect blood glucose levels?

  • Causes glycogenolysis to occur
  • Lowers blood glucose levels
  • Causes gluconeogenesis to occur
  • Increases blood glucose levels
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Indiaistrying

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sass master, good quiz though thank you

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