7 - AEROBIC RESPIRATION (STAGE 2) Flashcards

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1
Q

What is the second stage of aerobic respiration?

A

The link reaction

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2
Q

Where does it occur?

A

In the mitochondrial matrix

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3
Q

What happens in this stage?

A

pyruvate is bound to coenzyme A producing acetyl coenzyme A with the release of NADH.

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4
Q

Step 1

A

1) Pyruvate is decarboxylated (carbon is removed)

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5
Q

STEP 2

A

NAD is reduced - it collects hydrogen from pyruvate, changing pyruvate into acetate

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6
Q

STEP 3

A

Acetate is combined with coenzyme A (CoA) to form acetyl coenzyme A (acetyl coA)

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7
Q

How many times does the link reaction occur per every glucose molecule and why?

A

It occurs twice because 2 pyruvate molecules are produced per glucose molecule and therefore the link reaction happens twice

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