Activity 9Cell MembraneStructure and Function

Activity 9: Cell Membrane Structure and Function

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Activity 9: Cell Membrane Structure and FunctionActivity 9: Cell Membrane Structure and Function

The Cell Membrane

Activity 9: Cell Membrane Structure and Function

Introduction

What basic characteristics of the cell membrane have you learned from models in the previous activities?

Read the introduction.

Activity 9: Cell Membrane Structure and FunctionActivity 9: Cell Membrane Structure and Function

How do the structures of the cell membrane help it function?

Challenge

Activity 9: Cell Membrane Structure and Function

Procedure

The questions in the reading do not require a written response, but you should answer them in your mind. The answers will help you to understand the reading.

Activity 9: Cell Membrane Structure and Function

Follow Up

A. What are the functions of the cell membrane?

B. Explain which parts of the cell membrane allow it to perform these functions.

Analysis 3

Activity 9: Cell Membrane Structure and Function

Follow Up

Explain how the cell membrane helps the cell maintain homeostasis – a stable internal environment. Name specific structures of the cell membrane and describe their functions in your explanation.

Analysis 5

Activity 9: Cell Membrane Structure and Function

Follow Up

Imagine a single-celled organism living in a pond. What would happen to the organism if runoff from irrigation caused the pond to become significantly salty? Use evidence to support your explanation.

Analysis 6

Activity 9: Cell Membrane Structure and FunctionActivity 9: Cell Membrane Structure and Function

How do the structures of the cell membrane help it function?

Revisit the Challenge

Activity 9: Cell Membrane Structure and FunctionActivity 9: Cell Membrane Structure and Function

active transport cell membrane,

membrane diffusion endocytosis exocytosis facilitated diffusion fluid mosaic model lipid lipid bilayer

macromolecule osmosis passive transport phospholipid phospholipid (lipid)

bilayer protein semi-permeable,

selectively permeable vesicle virus

Key Vocabulary