1.6 ATP ❤️

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9 Terms

1
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What does ATP stand for

Adenosine triphosphate

2
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Describe the structure of ATP

  • ribose bound to a molecule of adenine (base) and 3 phosphate groups

  • Nucleotide derivative (modified nucleotide)

3
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Draw the structure of ATP

.

<p>.</p>
4
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Describe how ATP is broken down

  • ATP (+water) —> ADP + Pi

  • ATP is hydrolysed using a water molecule

  • Catalysed by enzyme ATP hydrolase

5
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What is ADP, what is Pi

ADP = adenosine diphosphate

Pi =inorganic phosphate

6
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Two ways in which the hydrolysis of ATP is used

  • coupled to energy requiring reactions within cells (releases energy),e.g active transport, protein synthesis

  • Inorganic phosphate released can be used to phosphorylate other compounds, making them more reactive

7
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How is ATP resynthesised in cells

  • ADP+Pi —> ATP (+water)

  • ADP + Pi is joined by a condensation reactions within cells, removing a water molecule

  • Catalysed by enzyme ATP synthase

  • During respiration and photosynthesis

8
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Draw the reaction for ADP+Pi —> ATP

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<p>.</p>
9
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How do the properties of ATP make it a suitable immediate energy source

  • releases energy in small amounts, so little energy is lost as heat

  • Single reaction/ one bond hydrolysed to release energy so its an immediate release

  • Cannot pass out of cell