Aerobic System Flashcards

1
Q

What is a coenzyme

A

A molecule that can carry atoms transporting them from one reaction to another

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2
Q

Where does the krebs cycle take place

A

In the matrix of the mitochondria of the muscle cell

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3
Q

How does pyruvic acid enter into the Krebs cycle

A

By converting into Acetyl coenzyme A via the enzyme pyruvatedehydrogenase

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4
Q

What does Acetyl coenzyme A combine with in the Krebs cycle

A

Acetyl coenzyme A combines with Oxaloacetic acid to form citric acid

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5
Q

What is produced after a series of complex reactions occurring in the Krebs cycle

A

Hydrogen and carbon dioxide

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6
Q

Explain the oxidation of citric acid during the Krebs cycle

A

Removal of hydrogen atoms from Acetyl coenzyme A which enter the final stage of the Krebs cycle

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7
Q

How is carbon dioxide removed

A

Through being breathed out

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8
Q

How many ATP molecules are resynthesises at the end of the Krebs cycle

A

2

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9
Q

Where does the electron transport chain occur

A

In the Cristae of the mitochondria

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10
Q

How is hydrogen, given off from the Krebs cycle, transport to the ETC

A

Via hydrogen carriers NADH and FADH

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11
Q

How many moles of ATP are produced from the process of hydrogen, within the hydrogen carriers, being oxidised

A

34

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12
Q

What is the bi-product produced from the oxidising of hydrogen during ETC

A

Water

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13
Q

What are the hydrogen atoms split into during ETC

A

Hydrogen ions = which are oxidised to form water

Hydrogen electrons = provide energy for the resynthesises of ATP

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14
Q

What else other than carbohydrates can be used as an energy source

A

Fats

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15
Q

What are fats broken down into

A

Fats are broken down into glycerol and then free fatty acids

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16
Q

What is the process of beta oxidation

A

Free fatty acids are broken down in the mitochondria to form Acetyl coenzyme A which then enters the Krebs cycle

17
Q

What produces more ATP, free fatty acids or glycogen

A

Free fatty acids - predominantly used during long duration exercise