IB Biology Topic C1.2.5 Differences Between Anaerobic and Aerobic Cell Respiration in Humans Revision Notes (SL/HL)

IB Biology Topic C1.2.5 Differences Between Anaerobic and Aerobic Cell Respiration in Humans Revision Notes (SL/HL) | RevisionDojo

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Aerobic and Anaerobic Respiration Differ in Oxygen, Yield, and Products

Cell respiration converts the energy in organic compounds into ATP, the energy currency of the cell.
Humans use two types of cell respiration: aerobic respiration and anaerobic respiration.
They differ mainly in the presence of oxygen, energy yield, by-products, and where they occur in the cell.

Analogy

Imagine sprinting up a hill until your muscles burn and you are gasping for air.
Your cells are working hard to produce ATP.
When oxygen runs low, they switch to a backup pathway.

Aerobic Respiration Gives a High ATP Yield Using Oxygen

Aerobic respiration is the main way cells make ATP when oxygen is available.
It is highly efficient and produces a large amount of ATP from each glucose molecule.

Glucose + oxygen → carbon dioxide + water + ATP

Oxygen requirement: it depends on oxygen as the final electron acceptor in the electron transport chain.
Location: most of it occurs in the mitochondria, in the matrix and across the inner mitochondrial membrane.
Substrates: glucose is most common, but fatty acids and amino acids can also be used.
ATP yield: about 30-32 ATP per glucose (a theoretical maximum of 36-38 is lowered by transport costs).

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Aerobic and Anaerobic Respiration Differ in Oxygen, Yield, and Products

Cell respiration converts the energy in organic compounds into ATP, the energy currency of the cell.
Humans use two types of cell respiration: aerobic respiration and anaerobic respiration.
They differ mainly in the presence of oxygen, energy yield, by-products, and where they occur in the cell.

Analogy

Imagine sprinting up a hill until your muscles burn and you are gasping for air.
Your cells are working hard to produce ATP.
When oxygen runs low, they switch to a backup pathway.

Aerobic Respiration Gives a High ATP Yield Using Oxygen

Aerobic respiration is the main way cells make ATP when oxygen is available.
It is highly efficient and produces a large amount of ATP from each glucose molecule.

Glucose + oxygen → carbon dioxide + water + ATP

Oxygen requirement: it depends on oxygen as the final electron acceptor in the electron transport chain.
Location: most of it occurs in the mitochondria, in the matrix and across the inner mitochondrial membrane.
Substrates: glucose is most common, but fatty acids and amino acids can also be used.
ATP yield: about 30-32 ATP per glucose (a theoretical maximum of 36-38 is lowered by transport costs).

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anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic C1.2.5: Differences Between Anaerobic and Aerobic Cell Respiration in Humans Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

Aerobic and Anaerobic Respiration Differ in Oxygen, Yield, and Products

Aerobic Respiration Gives a High ATP Yield Using Oxygen

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Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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Aerobic and Anaerobic Respiration Differ in Oxygen, Yield, and Products

Aerobic Respiration Gives a High ATP Yield Using Oxygen

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account