Respiration Flashcards

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1
Q

What is glycolysis

A

The breakdown of glucose to pyruvate

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2
Q

Where is the exact location of glycolysis

A

Cytoplasm

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3
Q

What is the role of ATP in glycolysis

A

Phosphorylates intermediates

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4
Q

Why is it called the energy pay off stage

A

2 ATP were initially used and 4 ATP were produced so a net gain of 2 produced

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5
Q

Is oxygen required for glycolysis

A

No

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6
Q

What does the dehydrogenase enzyme do in both glycolysis and the citric acid cycle

A

Remove hydrogen ions and electrons and pass them to the coenzyme NAD to form NADH.

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7
Q

What does the acetyl group combine with and what does it form

A

Combines with coenzyme A to form acetyl coenzyme A

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8
Q

What happens to pyruvate in aerobic conditions

A

Broken down into acetyl group.

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9
Q

What does the acetyl group from acetyl coenzyme A combine with and what does it form

A

Oxaloacetate to form citrate

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10
Q

What happens to the citrate formed

A

Gradually converted back into oxaloacetate

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11
Q

What is the exact location of the citric acid cycle

A

The matrix of the mitochondria

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12
Q

What happens to the the electrons and hydrogen ions from NADH after the citric acid cycle

A

Passed onto the electron transport chain

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13
Q

What is the the exact location of the electron transport chain

A

The inner mitochondrial membrane

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14
Q

How is energy produced in the electron transport chain

A

High energy electrons are passed along the chain releasing energy

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15
Q

What does the energy produced allow hydrogen ions to do

A

Allows hydrogen ions to be pumped across the inner mitochondrial membrane

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16
Q

How is ATP produced

A

The return flow of hydrogen ions through the membrane protein ATP synthase results in the production of ATP

17
Q

What else is produced in the citric acid cycle

A

CO2

18
Q

Role of oxygen in electron transport chain

A

Combines with hydrogen and electrons to form water.

19
Q

Where does fermentation take place

A

Cytoplasm

20
Q

What is pyruvate converted into in animals in fermentation

A

2 ATP and lactate

21
Q

What is pyruvate converted to in plants and yeast in fermentation

A

Ethanol and CO2 and 2ATP