Nucleic acids and ATP

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Created by
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Cards (11)

  • 3 Uses of ATP (MAS) and explain why
    Active transport, Muscle contract and secretion
  • Why is ATP an immediate energy source?
    When ATP is hydrolysed by ATP hydrolase, The inorganic phosphate groups of ATP break 1 bond which releases a small amount of energy.
  • First Reason of DNA Stability
    Phosphodiester backbone - The backbone which protects more chemically reactive organic bases inside the double helix (DNA)
  • Second reason for DNA stability
    Hydrogen bonds which link base pairs together between phosphodiester uprights. Cytosine and guanine are linked together by 3 hydrogen bonds. The more C-G base pairings, the more stable DNA IS
  • How does the structure of DNA effect its functions (Reason 1)
    Stability - DNA is stable so it can be passed down through generations without significant changes and most mutations are repaired.
  • How does the structure of DNA effect its function (Reason 2)
    Base pairing within helix - The base pairings of DNA are within the helix therefore it is protected from chemical forces and the outside.
  • How does the structure of DNA effect its function (Reason 3)
    Base pairings - DNA has base pairings which allow it to replicate and transfer genetic information to the mRNA
  • How does the structure of DNA effect its function (Reason 4 )
    2 separate strands joined by Hydrogen bonds only - The hydrogen bonds which join the 2 DNA strands make is easier for the strands to separate for DNA replication and protein synthesis.
  • How does the structure of DNA effect its function (Reason 5)
    Large Molecule - DNA is an extremely large molecule therefore it carries an immense amount of genetic information.
  • Third reason for DNA stability
    Base stacking - There are other interactive forces acting between the base pairs holding the molecules together.
  • Disadvantages of ATP

    ATP is not a good energy store, it only stores a small amount of energy. Therefore cells do not carry a lot of ATP. ATP cannot be stored so it is continuously produced within the mitochondria of a cell.