Free Powerpoint Presentations

Cell Transport
Page
1

DOWNLOAD

PREVIEW

Slide 1

Cellular Transport Notes

Cellular Transport Notes

Slide 2

About Cell Membranes

About Cell Membranes

All cells have a cell membrane

Functions:

Controls what enters and exits the cell to maintain an internal balance called homeostasis

Provides protection and support for the cell

TEM picture of a real cell membrane.

Slide 3

Structure of cell membrane

Structure of cell membrane

Lipid Bilayer -2 layers of phospholipids

Phosphate head is polar (water loving)

Fatty acid tails non-polar (water fearing)

Proteins embedded in membrane

About Cell Membranes (continued)

Phospholipid

Lipid Bilayer

Slide 4

Proteins

Proteins

Membrane movement animation

Polar heads love water & dissolve.

Non-polar tails hide from water.

Carbohydrate cell markers

Fluid Mosaic Model of the cell membrane

Slide 5

4. Cell membranes have pores (holes) in it

4. Cell membranes have pores (holes) in it

Selectively permeable: Allows some molecules in and keeps other molecules out

The structure helps it be selective!

About Cell Membranes (continued)

Pores

Slide 6

Outside of cell

Outside of cell

Inside of cell

(cytoplasm)

Lipid

Bilayer

Proteins

Transport

Protein

Phospholipids

Carbohydrate

chains

Structure of the Cell Membrane

Go to Section:

Animations

of membrane structure

Slide 7

Types of Cellular Transport

Types of Cellular Transport

Passive Transport

cell doesnt use energy

Diffusion

Facilitated Diffusion

Osmosis

Active Transport

cell does use energy

Protein Pumps

Endocytosis

Exocytosis

Animations of Active Transport & Passive Transport

Slide 8

Passive Transport

Passive Transport

cell uses no energy

molecules move randomly

Molecules spread out from an area of high concentration to an area of low concentration.

(HighLow)

Three types:

Slide 9

3 Types of Passive Transport

3 Types of Passive Transport

Diffusion

Facilitative Diffusion diffusion with the help of transport proteins

Osmosis diffusion of water

Slide 10

Passive Transport: 1. Diffusion

Passive Transport: 1. Diffusion

Diffusion: random movement of particles from an area of high concentration to an area of low concentration.

Go to page:
 1  2  3 

Contents

Last added presentations

2010-2018 powerpoint presentations