DNA, RNA and protein synthesis summary

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Anonymous
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103347
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DNA, RNA and protein synthesis summary
Updated:
2011-09-21 13:35:22
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DNA RNA protein synthesis biology
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Higher Biology - DNA, RNA and protein synthesis summary
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  1. DNA consists of two strands twisted into a double...?
    helix
  2. What is each strand composed of?
    nucleotides
  3. What does each molecule consist of?
    Deoxyribose sugar, phosphate and one of the four types of bases
  4. What are the four types of bases?
    Adenine, thymine, guanine and cytosine
  5. Which bases pair up together?
    • Adenine pairs with thymine
    • Guanine pairs with cytosine
  6. Why is DNA unique?
    Because it is able to reproduce itself exactly by replication
  7. Replication allows the genetic message to be passed on from cell to _____ and from generation to generation?
    cell
  8. RNA is composed of how many strands of nucleotides?
    One
  9. In RNA what is found in the place of thymine?
    Uracil
  10. In RNA what is found in the place of deoxyribose sugar?
    Ribose sugar
  11. The bases along a DNA strand take the form of a molecular language called...?
    the genetic code
  12. Each ____ of bases codes for a particular amino acid?
    triplet
  13. mRNA is _______ from a strand of DNA?
    transcribed
  14. Where does mRNA meet a molecule of tRNA?
    At a ribosome
  15. What do the mRNA's codons link with?
    The tRNA's anticodons
  16. What organelle bears ribosomes on its outer surface?
    Rough endoplasmic reticulum
  17. Where is freshly synthesised protein transported to via the rough ER?
    The golgi apparatus
  18. What is freshly synthesised protein packaged in?
    vesicles
  19. In addition to carbon, hydrogen and oxygen what other element does protein always contain?
    nitrogen
  20. What are the sub-units that make up proteins called?
    amino acids
  21. A molecule of _______ protein consists of parallel polypeptide chains and has a structural function?
    fibrous
  22. A molecule of _______ protein consists of polypeptide chains folded into a spherical shape?
    globular
  23. What are the functions of globular proteins?
    Structural, hormones, enzymes or anitbodies

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