Loading lesson

Plasma membranes and cell transport

Cells and cell division · Lesson 3 of 4

Lesson 3 of 4

Ask a tutor

Lesson 3 of 4 · Cells and cell division

Plasma membranes and cell transport

3 quick checks≈2% of the testCore

Reading is free. Sign in to tick off lessons, keep your place and track your mastery.

By the end you’ll be able to

describe the structure of plasma membranes using the fluid mosaic model, including phospholipid bilayers, hydrophilic and hydrophobic regions, intrinsic and extrinsic proteins, glycoproteins, glycolipids, cholesterol where specified, and membrane fluidity
explain the roles of membrane components in transport, recognition, signalling, enzyme activity and cell adhesion

0% read

compare simple diffusion, facilitated diffusion through channel or carrier proteins, and active transport in terms of direction relative to gradient, selectivity, protein involvement and energy requirement

interpret and evaluate practical investigations into membrane permeability and transport, including the effects of surface area to volume ratio, temperature, concentration difference and membrane adaptation

predict and explain the effects of solutions of different water potential or tonicity on animal and plant cells, including plasmolysis, turgidity, flaccidity and lysis where specified

This lesson hasn’t been written yet

Biology lessons are written from the official syllabus the first time a learner opens them, then saved for everyone. Sign in and this one is written for you in a minute or two. It’s free.

Sign in Create a free account