IB Biology HL C1.2.14 Hl Proton Gradient Generation Questions

Trace proton pumping from the mitochondrial matrix to the intermembrane space and explain how the inner membrane maintains a gradient and membrane potential in IB Biology HL C1.2.14.

Exam points

Identify the inner mitochondrial membrane as the barrier across which protons are pumped.
Explain that electron-transfer energy moves protons from the matrix into the intermembrane space.
Relate proton accumulation to an electrochemical gradient that can drive ATP synthesis.

[Maximum number: 1]

Where are protons pumped, to allow chemiosmosis in aerobic respiration to occur?

From outside the mitochondrion through the double membranes

From carrier to carrier in the inner mitochondrial membrane

From the matrix of the mitochondrion to the space between the membranes

From the space between the membranes to the cytoplasm outside the mitochondrion

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IB Biology HL C1.2.14 Hl Proton Gradient Generation Questions question 1