1.3.2 - ATP Flashcards

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1
Q

structure of ATP

A

ribose sugar
3 phosphate groups
A nitrogenous base (adenine)

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2
Q

Where is the energy used to synthesise ATP from?

A

From the energy provided by respiration

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3
Q

What does ATP supply for cells?

A

An immediate supply of energy

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4
Q

What two reactions change the number of phosphates on ATP and ADP?

A

Condensation adds a phosphate to ADP.
Hydrolysis takes a phosphate from ATP.

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5
Q

What is the reversible reaction between ATP and ADP?

A

ATP + water — ADP + Pi

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6
Q

Properties of ATP

A

Small and soluble so easily transported
Only one phosphate has to be hydrolysed so is a quick release of energy.
Can’t pass out of a cell so is an immediate supply of energy

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7
Q

Examples of purines and pyrimidines.

A

Purines - adenine and guanine
Pyrimidines - cytosine, thymine and uracil

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8
Q

What is ATPase?

A

The enzyme that catalyses the breakdown of ATP

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9
Q

What is ATP synthase?

A

Catalyses the synthesis of ATP

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