IB Biology Topic C1.2.15 Chemiosmosis and the Synthesis of ATP in the Mitochondrion Revision Notes (HL)

IB Biology Topic C1.2.15 Chemiosmosis and the Synthesis of ATP in the Mitochondrion Revision Notes (HL) | RevisionDojo

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A Proton Gradient Alone Cannot Make ATP

The proton gradient built in C1.2.14 stores energy, but a gradient does not directly make ATP.
The cell needs a way to convert the potential energy of the gradient into the chemical energy of ATP bonds.
That mechanism is chemiosmosis.

Chemiosmosis: Proton Flow That Powers ATP Synthesis

Definition

Chemiosmosis

Chemiosmosis is the movement of protons ($H^+$) across a membrane, driven by a concentration gradient, to power the synthesis of ATP.

Protons flow back into the matrix through a specialised enzyme called ATP synthase.

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A Proton Gradient Alone Cannot Make ATP

The proton gradient built in C1.2.14 stores energy, but a gradient does not directly make ATP.
The cell needs a way to convert the potential energy of the gradient into the chemical energy of ATP bonds.
That mechanism is chemiosmosis.

Chemiosmosis: Proton Flow That Powers ATP Synthesis

Definition

Chemiosmosis

Chemiosmosis is the movement of protons ($H^+$) across a membrane, driven by a concentration gradient, to power the synthesis of ATP.

Protons flow back into the matrix through a specialised enzyme called ATP synthase.

Definition

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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 C1.2.15: Chemiosmosis and the Synthesis of ATP in the Mitochondrion Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

A Proton Gradient Alone Cannot Make ATP

Chemiosmosis: Proton Flow That Powers ATP Synthesis

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Excepteur sint occaecat cupidatat non proident

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A Proton Gradient Alone Cannot Make ATP

Chemiosmosis: Proton Flow That Powers ATP Synthesis

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

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