IB Biology Topic B2.1.16 Sodium-dependent Glucose Cotransporters as an Example of Indirect Active Transport Revision Notes (HL)

IB Biology Topic B2.1.16 Sodium-dependent Glucose Cotransporters as an Example of Indirect Active Transport Revision Notes (HL) | RevisionDojo

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Sodium-Glucose Cotransport Uses the Sodium Gradient to Move Glucose Uphill

Definition

The sodium-glucose cotransporter

The sodium-glucose cotransporter is a protein that moves sodium ions (Na⁺) and glucose molecules together across a plasma membrane into a cell.

How Cotransport Works

Energy source: the movement of Na⁺ down its concentration gradient provides the energy to move glucose against its gradient.
Mechanism: as sodium ions flow in down their gradient, they drag glucose into the cell without directly using ATP.

Where Cotransport Happens in the Body

Kidney and intestine
1. Cotransport works in the proximal tubule of the kidney and in the lining of the small intestine.

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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 nisi ut aliquip ex ea commodo consequat.

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.

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Sodium-Glucose Cotransport Uses the Sodium Gradient to Move Glucose Uphill

Definition

The sodium-glucose cotransporter

The sodium-glucose cotransporter is a protein that moves sodium ions (Na⁺) and glucose molecules together across a plasma membrane into a cell.

How Cotransport Works

Energy source: the movement of Na⁺ down its concentration gradient provides the energy to move glucose against its gradient.
Mechanism: as sodium ions flow in down their gradient, they drag glucose into the cell without directly using ATP.

Where Cotransport Happens in the Body

Kidney and intestine
1. Cotransport works in the proximal tubule of the kidney and in the lining of the small intestine.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

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 B2.1.16: Sodium-dependent Glucose Cotransporters as an Example of Indirect Active Transport Notes

Sodium-Glucose Cotransport Uses the Sodium Gradient to Move Glucose Uphill

How Cotransport Works

Where Cotransport Happens in the Body

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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Sodium-Glucose Cotransport Uses the Sodium Gradient to Move Glucose Uphill

How Cotransport Works

Where Cotransport Happens in the Body

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

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics