Ijmb Model Questions Vol1 2022 Biology Question 7

Practice essay / theory question 7 from the 2022 Ijmb Model Questions Vol1 Biology examination. This question covers Cell Structure, Membrane Transport .

Ijmb Model Questions Vol1 2022 Biology Essay / Theory
Topics: Cell Structure Membrane Transport
Question 7 IJMB_MODEL_QUESTIONS_VOL1 • 2022 • BIOLOGY • essay

The plasma membrane of a cell contains various transport proteins that facilitate movement of substances across the membrane.

Question Parts

( a )
Describe three major types of membrane transport, giving one specific example of a substance or molecule that uses each type.
( b )
A cell is placed in a solution where the external Na⁺ concentration is 150 mM and the internal Na⁺ concentration is 15 mM. Explain how the Na⁺/K⁺‑ATPase contributes to maintaining this gradient and state how many Na⁺ ions are exported from the cell per molecule of ATP hydrolysed.

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About This Question

This is Ijmb Model Questions Vol1 2022 Biology Question 7. It is one of the essay questions from the 2022 Ijmb Model Questions Vol1 Biology examination.

The question covers Cell Structure, Membrane Transport .

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