6.1.4

ADP & ATP

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Structure and Function of ATP

ATP is called a nucleotide derivative because it is a modified form of a nucleotide. More specifically, it is a phosphorylated nucleotide.

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Components of ATP

  • The components of ATP are:
    • Adenine - a nitrogenous base.
    • Ribose - a five-carbon sugar.
    • Three phosphate groups.
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Function of ATP

  • ATP is a small, relatively simple molecule.
  • This molecule can be thought of as the primary energy currency of cells.
    • ATP is the cell's equivalent of money, which people exchange for things they need.
  • ATP is used to power most energy-requiring cellular reactions.

Jump to other topics

1Cell Structure

2Biological Molecules

3Enzymes

4Cell Membranes & Transport

5The Mitotic Cell Cycle

6Nucleic Acids & Protein Synthesis

7Transport in Plants

8Transport in Mammals

9Gas Exchange

10Infectious Diseases

11Immunity

12Energy & Respiration (A2 Only)

13Photosynthesis (A2 Only)

14Homeostasis (A2 Only)

15Control & Coordination (A2 Only)

16Inherited Change (A2 Only)

17Selection & Evolution (A2 Only)

18Classification & Conservation (A2 Only)

19Genetic Technology (A2 Only)

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