Red=solute, white=solvent  Explain how the solute will move according to diffusion.  Draw a picture of what the cells will look like after diffusion.

Slides:

Advertisements

Similar presentations

DIFFUSION & OSMOSIS.

Advertisements

* Water Concentrations * Movement of water molecules (H20) across a permeable membrane. * Molecules move from area of high concentrations to areas of.

Hypotonic, Hypertonic and Isotonic

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.

Water and its relation to Osmosis & Diffusion Living cells contain aqueous (water) solution and they are surrounded by aqueous solutions.

Water and its relation to Diffusion and Osmosis

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 AND SURFACE AREA TO VOLUME RATIO.  The net movement of atoms, ions or molecules down a concentration gradient.  Movement is from: High Low.

Solute vs. Solvent Solute: Solute: The substance being dissolved Solvent: Solvent: a liquid, gas, or solid capable of dissolving another substance (Water.

WARM UP #4 11/29 Yesterday you saw a plant and animal cell (yours). What 2 parts are 1. Only in plants? 2.Only in animals? 3. Do larger organisms = larger.

Movement across the Cell Membrane Section 7-3. Cell Membrane Cell Membrane.

Osmosis 67% sugar solution 83% sugar solution

Diffusion and Osmosis. Diffusion is the movement of molecules from a high concentration to a low concentration. Many molecules diffuse across cell membranes.

Molecule Transport REVIEW JEOPARDY #1 S2C06 Jeopardy Review.

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 Water crosses the membrane via facilitated diffusion. The tails of phospholipids are hydrophobic/non-polar, so water can’t cross the membrane without.

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.

Osmosis SWBAT describe how osmosis affects the homeostasis of a cell.

Hypotonic, Hypertonic and Isotonic

DIFFUSION / OSMOSIS. What does the prefix ‘homo’ mean? Same.

BELL WORK: Copy and complete the concept map below: Molecule Transport HIGH to LOW LOW to HIGH Diffusion Facilitated Diffusion Osmosis Active Transport.

Background About Solutions Need To Know p What is a solution? Uniform mixtures of 2 or more substances. – Solid, liquid, or gas What do we mean.

Diffusion & Osmosis. Diffusion Diffusion The movement of molecules from an area in which they are highly concentrated to an area in which they are less.

Guiding Question: What is the importance of the membrane?

Hypotonic, Isotonic, & Hypertonic. A solute is… the substance dissolved in a given solution.solution.

SiLENT DO NOW Read the lab when you are done  Explain how the solute will move according to diffusion.  Describe what the cells will look like after.

Diffusion and Osmosis. DIFFUSION The process in which molecules move from areas of HIGH concentration to areas of LOW concentration.

Elodea cells normally contain about 1% salt and 99% water. Tap water normally contains about 1% salt and 99% water. The salt solution you used contains.

SUPERBOWL MONDAY!  Objective:  SWBAT remaster objectives from the Unit 2 test  Catalyst:  What moves during diffusion?  What happens to cells in a.

Tonicity: The relative concentration of solutions. Hypertonic, Isotonic and Hypotonic.

OsmosisSeptember 2, 2009 Objective: SWBAT predict water movement in hyper/hypotonic solutions. Catalyst: Define selectively permeable. Give an example.

Active Transport 1. A cell contains a solution that is 88% water, and it is sitting in a solution that is 20% water. 2. A cell contains a solution that.

Diffusion and Osmosis Please take notes on page 71.

CELL TRANSPORT CONT pp

Cellular Transport Notes: Osmosis and Tonicity

Osmosis and Blood Sugar

Diffusion and Osmosis Biology.

Diffusion, Osmosis, and the Plasma Membrane

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

Osmosis Bellringer: Sketch a cell in a isotonic, hypertonic, and hypotonic solution showing the solute molecules. Objective: SWBAT predict the movement.

Osmosis & Tonicity This is going to show how cells transport substances in and out. 1.

4.1 Cell Biology Lesson 8.

The “bouncers” of the cell

Membrane Function Learning Target: I can explain how cell membranes interact with their environment.

Passive Transport - Osmosis

Section Objectives Predict the movement of water and other molecules across selectively permeable membranes. (SPI ) Compare and contrast.

Cellular Physiology TRANSPORT.

Cells Maintaining Homeostasis

Bell Ringer In the Naked Egg Lab, what is your manipulated variable? What is your responding variable?

OSMOSIS & DIFFUSION.

CELL TRANSPORT Cell membrane is semipermeable- allows certain things in, keeps certain things out Some molecules can pass right through small spaces in.

Cell Membranes.

Passive = not active (no energy) Transport = moving

Movement of particles across the cell membrane without using energy

S2E5: Osmosis Do This: Have Reading Qs 3.3 ready to grade

Osmosis Practice Problems

Solutions, and Movement of Molecules Therein

Movement of particles across the cell membrane without using energy

Cell Processes Diffusion & Osmosis.

Osmosis And Diffusion.

Diffusion & Osmosis.

OSMOSIS & DIFFUSION.

Latin and Greek Root Words And Intro to Questions

How cells move things in and out

Diffusion & Osmosis.

Selectively permeable membranes

Presentation transcript:

Red=solute, white=solvent  Explain how the solute will move according to diffusion.  Draw a picture of what the cells will look like after diffusion ends.  What is the function of the Golgi Apparatus?

OBJECTIVES By the end of the period, all SWBAT…  Predict the movement of water using osmosis

Osmosis!  Key Point #1: Osmosis is the diffusion of water  Osmosis is a special kind of diffusion  The solvent (water) moves, instead of the solute (stuff)  But… why?!?!

Blue=water, Green=solute

So What?  Key Point #2: When cells are placed in hypertonic or hypotonic solutions, they change in volume  Hyper- = high  Hypo- = low  Iso- = same

Hypertonic Solution Outside Cell Inside Cell 70% water 50% water

Water Hypertonic Solution Outside Cell Inside Cell 70% water 50% water

Hypertonic Solution Water Inside Cell Outside Cell 60% water

Hypotonic Solution Outside Cell Inside Cell 22% water 40% water

Water Hypotonic Solution Outside Cell Inside Cell 22% water 40% water

Inside Cell Water Hypotonic Solution Outside Cell 30% water

Isotonic Solution Inside Cell Outside Cell 90% water

Red blood cells in action  THIS IS AWESOME! THIS IS AWESOME!

Whiteboards! Pull into groups and get your whiteboards, please!

Inside Cell Outside Cell 16% water 7% water

Outside Cell Inside Cell 54% water 88% water

Inside Cell Outside Cell 1% water

Hypo, hyper or isotonic? 40% water inside the cell and 10% water outside the cell. The cell membrane is permeable to water. 1)Is this hypertonic, hypotonic, or isotonic? 2)How will the water move, according to osmosis? 3)What will happen to the cell?

Hypo, hyper or isotonic? 10% water inside the cell and 90% water outside the cell. The cell membrane is permeable to water. 1)Is this hypertonic, hypotonic, or isotonic? 2)How will the water move, according to osmosis? 3)What will happen to the cell?

Hypo, hyper or isotonic? 55% water inside the cell and 55% water outside the cell. The cell membrane is permeable to water. 1)Is this hypertonic, hypotonic, or isotonic? 2)How will the water move, according to osmosis? 3)What will happen to the cell?

PAY ATTENTION!!!  20% SUGAR inside the cell and 22% SUGAR outside the cell. The cell membrane is permeable to water.

Hypo, hyper or isotonic? 20% sugar inside the cell and 22% sugar outside the cell. The cell membrane is permeable to water. 1)Is this hypertonic, hypotonic, or isotonic? 2)How will the water move, according to osmosis? 3)What will happen to the cell?

Hypo, hyper or isotonic? 80% sugar inside the cell and 80% sugar outside the cell. The cell membrane is permeable to water. 1)Is this hypertonic, hypotonic, or isotonic? 2)How will the water move, according to osmosis? 3)What will happen to the cell?

Hypo, hyper or isotonic? 9% sugar inside the cell and 1% sugar outside the cell. The cell membrane is permeable to water. 1)Is this hypertonic, hypotonic, or isotonic? 2)How will the water move, according to osmosis? 3)What will happen to the cell?

We’re getting tricky!  Seawater has a higher concentration of salt than do human body cells. Imagine that poor D’wan is stranded out at sea, and very thirsty. He drinks a bunch of seawater.  What type of solution is seawater (hypertonic, hypotonic, isotonic)?  What will happen to his cells as a result?

We’re getting tricky!  Seawater has a lower concentration of water than do human body cells.  What type of solution is seawater (hypertonic, hypotonic, isotonic)?  What would happen to your cells if you drank seawater?

We’re getting tricky!  Distilled has a higher concentration of water than do human body cells.  What type of solution is seawater (hypertonic, hypotonic, isotonic)?  What would happen to your cells if you drank distilled water?

We’re getting tricky!  Distilled has a lower concentration of minerals than do human body cells.  What type of solution is seawater (hypertonic, hypotonic, isotonic)?  What would happen to your cells if you took a bath in distilled water?

Worksheet  Everyone loves… WORKSHEETS!!!

Exit Question 1. A cell contains a solution that is 44% water, and it is sitting in a solution that is 70% water. 2. A cell contains a solution that is 64% water, and it is sitting in a solution that is 64% water. 3. A cell contains a solution that is 9% sugar, and it is sitting in a solution that is 88% sugar.  Identify the type of solution  Describe what will move, and where  Explain how the cell’s volume will change  Identify the type of solution  Describe what will move, and where  Explain how the cell’s volume will change