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Topic: Cell Processes Aim: Explain the two types of cell transport. Do Now: Define the term “concentration.” HW: Work on your science fair project.
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The sum of all life processes is known as a.Regulation b.Metabolism c.Transport d.Excretion
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Metabolism is best described as: (multiple choice)? a.control of enzyme activity b.synthesis of macromolecules c.breakdown of macromolecules d.A and B e.A,B, and C
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Transport Circulation Movement of materials into and out of cells
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The chloroplasts move around inside the cell = TRANSPORT
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Passive Transport
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Materials move from high low concentration NO ENERGY NEEDED
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high low Weeee!!!
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2 Types of Passive Transport
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1. Diffusion: movement of materials from HIGH to LOW concentration
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HIGH LOW DIFFUSION
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Molecules move until concentration becomes equal on both sides (equilibrium)
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Cell membrane Inside cell Outside cell
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Cell membrane Inside cell Outside cell diffusion
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Cell membrane Inside cell Outside cell EQUILIBRIUM Diffusion through a membrane
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2.Osmosis: diffusion of WATER
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Movement of WATER from HIGH to LOW concentration
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Topic: Cell Processes Aim: Explain the two types of cell transport. Do Now: Define the term “concentration.” HW: Work on your science fair project.
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http://zoology.okstate.edu/zoo_lrc/biol1114 /tutorials/Flash/Osmosis_Animation.htmhttp://zoology.okstate.edu/zoo_lrc/biol1114 /tutorials/Flash/Osmosis_Animation.htm
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Inside cell Outside cell Osmosis Cell membrane High conc. of water molecules. Low conc. of water molecules.
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Inside cell Outside cell High conc. of water molecules. Osmosis Cell membrane OSMOSIS Low conc. of water molecules.
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Osmosis Cell membrane Inside cell Outside cell OSMOSIS EQUILIBRIUM. Equal water concentration on each side.
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HIGH LOW + energy
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Active Transport http://www.youtube.com/watch?v=1w10R9lv7eQ&feature=related Movement of materials from LOW to HIGH concentration ENERGY IS NEEDED!
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Let’s summarize: 1.Explain the differences between passive transport and active transport. 2.What is the difference between diffusion and osmosis? 3.When will diffusion stop? http://www.youtube.com/watch?v=1ZFqOvxXg9M
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Review: Which process requires cellular energy? 1.diffusion 2. passive transport 3. active transport 4. osmosis
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Sodium ions are pumped from a region of lower concentration to a region of higher concentration in the nerve cells of humans. This process is an example of 1.diffusion 2. osmosis 3.passive transport 4. active transport
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The movement of materials from lower to higher concentration requiring energy in the form of ATP is called 1.movement 2. diffusion 3.active transport 4. cell division
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The movement of materials from higher to lower concentration is called 1.diffusion 2. active transport 3.pinocytosis 4.4. phagocytosis
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Damage to which structure will most directly disrupt water balance within a single-celled organism? 1.ribosome 2. cell membrane 3. nucleus 4. chloroplast
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The movement of water from an area of high concentration to an area of low concentration is known as 1.phagocytosis 2. osmosis 3. active transport 4. pinocytosis
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