'Hypertonic solution' diaporamas de présentation

BACTERIA & ARCHAEA

CAMPBELL & REECE CHAPTER 27. BACTERIA & ARCHAEA. PROKARYOTIC ADAPTATIONS. typical prokaryote: 0.5 -5 microns unicellular variety of shapes cocci (spherical) bacilli (rods) spirochetes (corkscrews). Cell-Surface Structures. nearly all have cell wall maintains shape protects cell

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& Transport

Resource. Acquisition. & Transport. Processes. Fig 36.2. I. Membrane Transport. A. Passive Transport . 1. Mechanisms. 2. Requirements. Fig 36.7. B. Why Transport?. 1. Occur at virtually every level of biological organization.

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Membrane

Plasma. Membrane. I. MAINTAINING BALANCE. How do cells maintain balance? Cells need to maintain a balance by controlling material that move in & out of the cell ? HOMEOSTASIS. I. MAINTAINING BALANCE.

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Cellular Transport

Cellular Transport. Cellular Transport. All particles move and have kinetic energy (energy of motion). Movement is random and usually in a water solution. Cells are mostly made of water and there is a constant flow of ions and particles. . IV. 2 Types of Cellular Transport .

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Groups

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The Plasma Membrane -

The Plasma Membrane -. Gateway to the Cell. Photograph of a Cell Membrane. Types of Transport Across Cell Membranes. Simple Diffusion. Requires NO energy Molecules move from area of HIGH to LOW concentration. DIFFUSION.

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Cell Membranes Osmosis and Diffusion

Cell Membranes Osmosis and Diffusion. Functions of Membranes. 1. Protect cell 2. Control incoming and outgoing substances 3. Maintain ion concentrations of various substances 4. Selectively permeable - allows some molecules in, others are kept out. Phospholipid Bilayer.

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Macromolecules in Cells

Macromolecules in Cells. All cell parts are made up of macromolecules! Proteins Carbohydrates Lipids Nucleic Acids. What organelle allows molecules to pass from outside of the cell to inside of the cell?. Cell Wall Nucleus Cell Membrane Vacuole. Cell Membrane!.

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Assignment # Diffusion and Osmosis

Assignment # Diffusion and Osmosis. Mrs. McCarthy Biology July 13, 2014. I. The Cell. In order to live, a cell must take in nutrients and water and eliminate wastes Parts of the cell involved in diffusion and osmosis:

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Cell Membranes Osmosis and Diffusion

Cell Membranes Osmosis and Diffusion. Functions of Membranes. 1. Protect cell 2. Control incoming and outgoing substances 3. Maintain ion concentrations of various substances 4. Selectively permeable - allows some molecules in, others are kept out. Phospholipid Bilayer.

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Cell Membranes Osmosis and Diffusion

Cell Membranes Osmosis and Diffusion. Functions of Membranes. 1. Protect cell 2. Control incoming and outgoing substances 3. Maintain ion concentrations of various substances 4. Selectively permeable - allows some molecules in, others are kept out. Phospholipid Bilayer.

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Bell Work

Bell Work. 1. If a membrane allows movement of only certain materials, it is called ___. Somewhat permeable Selectively permeable Somewhat impermeable Selectively permeable. Notes: Cell Membrane. Cell membranes are also called plasma membranes Facts: Selectively permeable

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Cell Membrane Transport

Cell Membrane Transport. Cell Membrane Transport. 1- Factors affecting transport - cell membrane - Chemical gradient - Electrical gradient - Rate of transport 2- Passive transport - Diffusion - Osmosis - Facilitated diffusion 3- Active transport - Pumps

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The Cell Membrane

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Cellular Transport How Molecules Are Transported Across The Cell Membrane.

Cellular Transport How Molecules Are Transported Across The Cell Membrane. Essential Questions. How do cells maintain homeostasis? How are cell membranes (plasma membranes) selectively permeable (semi-permeable)?

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Diffusion and Osmosis

Diffusion and Osmosis. Lab Results. Starch solution in the baggie . What does the baggie represent?. Solution with water and Iodine . After the starch baggie has been sitting in in Iodine and water!. No Salt!. No Salt!. After NaCl or saline solution has been added.

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Osmosis Review

Osmosis Review . 1. Hypertonic solutions. Plant cells ? the central vacuole loses water and the cells shrink causing wilting. Animal cells ? shrink ( plasmolysis ). 2. Hypotonic Solution. Plant cells ? CV fills with water, plant becomes stiff and rigid, CW keeps the plant from bursting.

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Osmosis Notes

Osmosis Notes. If you are stranded on a raft in the ocean, is it better to drink the salt water or no water at all?. The diffusion of water through a selectively permeable membrane. Only water moves during osmosis. Nothing else.

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Hypertonic vs. Hypotonic

Hypertonic vs. Hypotonic. Osmosis in Cells. Red Onion. Red Onion in SALT water. Red Onion in regular Water. Which cell is in a hypertonic solution?. Elodea. Elodea in regular water. Elodea in SALT water. Which cell is at equilibrium or in an isotonic solution?.

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