Presentation is loading. Please wait.

Presentation is loading. Please wait.

DIFFUSION & OSMOSIS.

Published byRebecca Whalen Modified over 10 years ago

Similar presentations

Presentation on theme: "DIFFUSION & OSMOSIS."— Presentation transcript:

1 DIFFUSION & OSMOSIS

2 Cell membranes are permeable (having pores or openings) to water, therefore, the environment the cell is exposed to can have a dramatic effect on the cell.

3 Cell Membranes

4

5 Plasma membrane

6

7

8 Passive Transport Active Transport

9

10

11 DIFFUSION Molecules move from areas of higher concentrations to areas of lower concentrations

12

13

14

15

16 Osmosis: the movement of water molecules from an area of high concentration to an area of low concentration.

17 OSMOSIS

18

19 Isotonic Isotonic : contains the same concentration inside & outside the cell. Water diffuses into & out of cell at the same rate.

20 Hypotonic contains a low concentration) The water diffuses into the cell, causing the cell to swell and possibly explode. Hypotonic

21 Hypertonic : contains a high concentration The water diffuses out of the cell, causing the cell to shrivel. Hypertonic

22

23

24

25

26

27

28

29

30 Question? How does the cell membrane know what to let in and what to let out?

31 SELECTIVE PERMEABILITY

32 SELECTIVE PERMEABILITY

33

34 Passive & Active Transport
You should know & be able to explain the following points: Osmosis Diffusion Membrane structure Selective Permeability Passive & Active Transport

Download ppt "DIFFUSION & OSMOSIS."

Similar presentations

Osmosis Osmosis is the net movement of water molecules over a partially permeable membrane from an area of less osmotic potential to an area of more negative.

Osmosis Osmosis is the net movement of water molecules over a partially permeable membrane from an area of less osmotic potential to an area of more negative.
Osmosis (diffusion of water through a selectively permeable membrane) Membrane X is permeable to water but not to protein Which side has the highest concentration.

Osmosis (diffusion of water through a selectively permeable membrane) Membrane X is permeable to water but not to protein Which side has the highest concentration.
Movement IN and OUT of Cells Substances move in and out through the cell membrane Moving from high to low concentration DOES NOT REQUIRE ENERGY by the.

Movement IN and OUT of Cells Substances move in and out through the cell membrane Moving from high to low concentration DOES NOT REQUIRE ENERGY by the.
The Selectively permeable Cell Membrane Diffusion, osmosis, and active transport.

The Selectively permeable Cell Membrane Diffusion, osmosis, and active transport.
Cells and Cellular Transport

Cells and Cellular Transport
Objectives: 1) Explain how the processes of diffusion and osmosis occur and why they are important to cells. 2) Predict the effect of a hypotonic, hypertonic,

Objectives: 1) Explain how the processes of diffusion and osmosis occur and why they are important to cells. 2) Predict the effect of a hypotonic, hypertonic,
Osmosis.  Energy requirements?  No energy required  Modes of passive transport?  Diffusion through cell membrane  The movement of a substance from.

Osmosis.  Energy requirements?  No energy required  Modes of passive transport?  Diffusion through cell membrane  The movement of a substance from.
Osmosis.

Osmosis.
Movement of particles across the cell membrane without using energy

Movement of particles across the cell membrane without using energy
Passive Transport Section 4.1.

Passive Transport Section 4.1.
Osmosis. 2 Diffusion of water across a membrane Diffusion of water across a membrane Moves from high water potential (low solute) to low water potential.

Osmosis. 2 Diffusion of water across a membrane Diffusion of water across a membrane Moves from high water potential (low solute) to low water potential.
Facilitated Diffusion Active Transport

Facilitated Diffusion Active Transport
Diffusion The movement of molecules from an area of high concentration to an area of low. concentration.

Diffusion The movement of molecules from an area of high concentration to an area of low. concentration.
PASSIVE TRANSPORT Movement of molecules across a membrane that requires no energy and always occurs down a concentration gradient Types of passive transport.

PASSIVE TRANSPORT Movement of molecules across a membrane that requires no energy and always occurs down a concentration gradient Types of passive transport.
Cell Boundaries Chapter 7-3. Cell Membrane Regulates what enters and leaves the cell.

Cell Boundaries Chapter 7-3. Cell Membrane Regulates what enters and leaves the cell.
Cellular Transport Unit 5. Passive Transport  Does not use energy 1. Diffusion Movement of particles from an area of higher concentration to an area.

Cellular Transport Unit 5. Passive Transport  Does not use energy 1. Diffusion Movement of particles from an area of higher concentration to an area.
The Cell Environment Jennifer Naples DI Biology. Cell Membrane Works as the gatekeeper of the cell It is selectively permeable – it lets some substances.

The Cell Environment Jennifer Naples DI Biology. Cell Membrane Works as the gatekeeper of the cell It is selectively permeable – it lets some substances.
Diffusion and Osmosis. Passive Transport Passive transport- movement of molecules across a cell membrane without energy input Refresh: Solute Object being.

Diffusion and Osmosis. Passive Transport Passive transport- movement of molecules across a cell membrane without energy input Refresh: Solute Object being.
Section 7-3 cont. Cellular Transport. Passive Transport  Does not use energy 1. Diffusion Movement of particles from an area of higher concentration.

Section 7-3 cont. Cellular Transport. Passive Transport  Does not use energy 1. Diffusion Movement of particles from an area of higher concentration.
Transportation of Molecules. Cellular Transport Carbohydrate Chain Lipid Bilayer.

Transportation of Molecules. Cellular Transport Carbohydrate Chain Lipid Bilayer.

Similar presentations

Ads by Google