Tonicity Tonicity is a measure of the osmotic pressure (as defined by the water potential of the two solutions) of two solutions separated by a semipermeable.

Slides:

Advertisements

Similar presentations

Cell Membrane Controls what materials enter or leave the cell Also called the phospholipid bilayer Heads are hydrophilic(“water loving”) They attract.

Advertisements

MEMBRANE PERMEABILITY. PERMEABILITY The membrane must allow water molecules to diffuse through. It is permeable to water. If a concentrated solution is.

Cell Environment Lab 5.

Solutions Water is considered the solvent.

Osmosis Problem Practice

Hypertonic Concentration with higher solute concentration and less water concentration Hypotonic lower solute concentration and more water concentration.

Isotonic solutions: if the osmotic concentrations of both solutions are equal than no net movement of water occurs if the osmotic concentrations of.

Osmosis. Overview The plasma membrane is the boundary that separates the living cell from its surroundings – It controls what goes in and what goes out.

Transport Across the Plasma Membrane. Overview Certain substances must move into the cell to support metabolic reactions Certain substances must move.

Agenda 9/29  Cell Organelle QUIZ  Pass back biomolecule quiz –Discuss corrections and retakes for those who failed to get to a 70 possibly.  Notes:

CELLS AND SOLUTIONS. Cells are solutions  A solution is a combination of any 2 + substances.  In cells, particles are in an aqueous (water) solution.

Diffusion, osmosis and dialysis

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

Transporting substances By Sangarun sangchachat Diffusion Diffusion is the movement of particles from an area of high concentration to an area of low.

Osmosis.  The movement of water across a semi-permeable membrane from an area of high water potential, to an area of low water potential until water.

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.

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

Osmosis Foldable The Effect of Osmosis in Cells Select 3 colors for the following terms: Hypertonic Isotonic Hypotonic.

CELLULAR TRANSPORT. PASSIVE AND ACTIVE TRANSPORT REVIEW Doesn’t require energy inputs Solutes diffuse through a channel inside the protein’s interior.

TRANSPORT THROUGH CELL MEMBRANES Diffusion and Osmosis.

Cellular Transport Unit 5. Passive Transport  Does not use energy 1. Diffusion Movement of particles from an area of higher concentration to an area.

OSMOSIS Osmosis is a form of passive transport where the solvent water molecules move from an area of high water concentration to an area of low water.

Copy and answer the following EQ into your science journal.

Osmosis: Striking a Balance. Maintaining A Balance Cells are surrounded by watery solutions and are filled by watery solutions. Cells are surrounded by.

Diffusion and Osmosis. Passive Transport Passive transport- movement of molecules across a cell membrane without energy input Refresh: Solute Object being.

DIFFUSION AND OSMOSIS 3.4. KEY CONCEPT Materials move across membranes because of concentration differences.

…within the cell.  Movement of molecules from a high concentration to low concentration.  why does this happen?  What is it called when concentration.

You should be able to: Define osmosis & diffusion. Determine why do we need to regulate osmosis. Identify what controls osmosis. Distinguish between a.

Osmosis: the diffusion of water molecules through a selectively permeable membrane. Water moves from high to low concentration. Is the membrane permeable.

Cell Transport. Diffusion The cytoplasm is a “solution” of many substances in water. Concentration=mass/volume Diffusion is the process by which molecules.

OSMOSIS Osmosis is a form of passive transport where the solvent water molecules move from an area of high water concentration to an area of low water.

Lesson 10 February 1 st, Review of Passive Transport Simple Diffusion Particles will move from an area of high concentration to an area of low concentration.

Cells and their environment. Tonicity (root: tonic) Used to describe the environment around the cell. Environment can be: HYPERtonic = more solute HYPOtonic.

Osmosis: Striking a Balance. Maintaining A Balance Cells are surrounded by watery solutions and are filled by watery solutions. Cells are surrounded by.

Osmosis is the movement of water across a membrane from a region of high concentration to a region of low concentration. 20 % salt solution 5% salt solution.

Tonicity is a measure of the osmotic pressure (as defined by the water potential of the two solutions) of two solutions separated by a semipermeable membrane.

Opening Activity 10/26/15 1.What do we mean when something has a high concentration? 2.What do we mean when something has a low concentration?

Hemolysis Naseem AL-Mthray. Hemolysis Hemolysis is the breakage of the red blood cell’s (RBC’s) membrane, causing the release of the hemoglobin and other.

Cell Membrane & Transport Cells maintain homeostasis (balance) by transporting substances across the membrane.

Osmosis Practice. 1. Environment _____________________ hypertonic Water leaves the cell and it shrivels or shrinks.

SECTION 3-4 How Things Get Into and Out of Cells

The building blocks of life

Osmosis & tonicity Pg. EQ: How do I correctly analyze the movement of water across a membrane?

Cellular Transport Notes: Osmosis and Tonicity

Set your notebooks up for Cornell Notes NOW!

Diffusion and Osmosis Intermediate 2.

Cells: Diffusion and Osmosis

“Salad” Notes Movement of molecules in and out of the cell

Colligative Properties: Osmotic Pressure (6.10)

Diffusion Movement of molecules from an area of high concentration to an area of lower concentration (down a concentration gradient). Continues until equilibrium.

Set your notebooks up for Cornell Notes NOW!

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

Diffusion Vs. Osmosis Biology.

Cells: Diffusion and Osmosis

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

Cell Membrane Function- Protection & Controls what enters and leaves the cell Structure- Double layered Phospholipid membrane Selectively Permeable.

Cell Transport 7.3.

Solutions Biology 11.

Passive Transport (7-3 part I)

CELLS Tonicity.

OSMOSIS and DIFFUSION.

The cell membrane.

The cell membrane.

Osmosis, Diffusion, and Facilitated Diffusion

Presentation transcript:

Tonicity Tonicity is a measure of the osmotic pressure (as defined by the water potential of the two solutions) of two solutions separated by a semipermeable membrane.

Reminder Concentration- The amount of solute per unit of solvent. Osmosis is the flow of water down the concentration gradient (from an area of high concentration to an area of low concentration) Water never stops moving, even when equilibrium has been reached.

Isotonic The net movement of water across the semipermeable membrane is equal. The amount of water entering a cell is the same as the amount leaving the cell Isotonic Plant cells are Flaccid. Water never stops moving, even when equilibrium has been reached.

Hypotonic There is more substances than water inside the cell. The concentration will try to even out. Water will enter the cell. This causes the cell to swell (get larger) until it may burst. Hypotonic Plant cells are Turgid. The Process of swelling animal cells is called hemolysis PUTTING A CELL IN PLAIN WATER

Hypertonic There is less substances than water inside the cell. The concentration will try to even out. Water will leave the cell. This causes the cell to shrink (get smaller) Hypertonic Plant cells are Plasmolyzed. The Process of shrinking animals cells is called crenation PUTTING A CELL IN SALT WATER

Tonicity Tonicity of Solution Water (outside of cell) Net Movement Concentration of Solute (outside of cell) Water (outside of cell) Net Movement End Product Isotonic Same as cell None Hypotonic Less than cell More than cell Cell gains water Swells, turgor pressure Hypertonic Cell loses water Shrinks plasmolysis

Practice http://highered.mcgraw- hill.com/sites/0072495855/student_view0/c hapter21/animation__hemolysis_and_crenati on.html Lets watch a clip and answer questions about red blood cells in different solutions.