ATP Flashcards

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1
Q

What is ATP’s structure?

A

it is a nucleotide derivative formed from a molecule of ribose, adenine and 3 phosphate groups

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2
Q

What is the difference between a nucleotide and ATP?

A

ATP has 3 PI but a nucleotide has 1

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3
Q

Energy released from glucose occurs when?

A

respiration

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4
Q

What is the name of the process of forming/resynthesising ATP?

A

condensation reaction of ADP and PI

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5
Q

Resynthesis of ATP? (4 marks)

A
  • energy supplied from respiration
  • condensation of ADP and PI
  • catalysed by ATP synthase
  • during photosynthesis and respiration
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6
Q

To start the resynthesis of ATP what is needed?

A

energy from respiration

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7
Q

During which 2 processes does the resynthesis of ATP occur?

A

photosynthesis and respiration

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8
Q

Hydrolysis of ATP? (3)

A
  • this releases energy for cells
  • catalysed by ATP hydrolase
  • bond is broken and ADP and PI formed
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9
Q

What can the hydrolysis of ATP be used for?

A

it can be coupled to energy requiring reactions within cells e.g active transport, muscle contraction, metabolic processes like protein syth & starch form

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10
Q

What can the PI released during hydrolysis of ATP be used for?

A

phosphorylate other compounds making them more reactive

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11
Q

Why is ATP a better energy source than glucose?

A
  • ATP produces energy in more controlled manageable quantities
    Energy release is faster, 1 reaction but gluc is a series
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12
Q

ATP mobility?

A

mobile molecule that is soluble and can diffuse out of mito to other parts of the cell so other organelles can use

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13
Q

Why is ATP an immediate source of energy?

A

it cannot be stored due to its unstable bonds so it is continuously made within mitochondria of cells.

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