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AP Reading Guide
Fred and Theresa Holtzclaw

Chapter 7: Membrane Structure and Function

Name_______________________Period___________

Chapter 7: Membrane Structure and Function
Concept 7.1 Cellular membranes are fluid mosaics of lipids and proteins
1.

The large molecules of all living things fall into just four main classes. Name them. 2.

Explain what is meant when we say a molecule is amphipathic.

3.

In the 1960s, the Davson-Danielli model of membrane structure was widely accepted. Describe this model and then cite two lines of evidence that were inconsistent with it.

4.

Who proposed the fluid mosaic model of membrane structure? When? Describe this model.

5.

What is meant by membrane fluidity? Describe the movements seen in the fluid membrane. 6.

Describe how each of the following can affect membrane fluidity:
a. decreasing temperature
b. phospholipids with unsaturated hydrocarbon chains
c. cholesterol

Copyright © 2010 Pearson Education, Inc.

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AP Reading Guide
Fred and Theresa Holtzclaw

7.

Chapter 7: Membrane Structure and Function

Membrane proteins are the mosaic part of the model. Describe each of the two main categories: integral proteins peripheral proteins

8.

Use Figure 7.9 to briefly describe major functions of membrane proteins.

Function

Description

Transport
Enzymatic activity
Signal transduction
Cell-cell recognition
Intercellular joining
Attachment to cytoskeleton and ECM

9.

Membrane carbohydrates are important in cell-cell recognition. What are two examples of this?

10.

Distinguish between glycolipids and glycoproteins.

Copyright © 2010 Pearson Education, Inc.

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AP Reading Guide
Fred and Theresa Holtzclaw

Chapter 7: Membrane Structure and Function

11.
Label the following structures: glycolipid glycoprotein integral protein peripheral protein cholesterol phospholipid
ECM fibers cytoskeleton microfilaments
integrins