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Learning Target: To understand how plant and animal cell differ in cell organelles and the functions of those organelles. Learning Outcome: I will complete the Plant and Animal Cell Lab.
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Create detailed drawing of all of what you see, not just one cell. Identify the following: Animal Cell – Nucleus, Cell Membrane, Cytoplasm and Endoplasmic Reticulum. Plant Cell – Cell Membrane, Cell Wall, Chloroplast, Water Vacuole, and Nucleus (?). *See if the chloroplast are moving.
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Learning Target: Know the structure and function of the cell membrane including lipid bilayer, protein channels and pumps. Learning Outcome: I will complete cell membrane model.
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Cell Membrane Section 7-3
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Function: To regulate what enters and leaves the cell and aids in protection and support.
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1. Lipid bilayer – 2 layers 2. Proteins Pumps Channels 3. Carbohydrates – attached to proteins Act as name tags or ID cards so cells can recognize each other
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Learning Target: Be able to describe the process of osmosis as it occurs in hypertonic, hypotonic and isotonic solutions. Learning Outcome: I will complete the “Observing Osmosis Lab” write-up.
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Draw a diagram that answers the following questions: (1) What substances does the cell allow to go in and out? (labeled arrows) (2) What substances does the cell keep in or out (circled labels).
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Diffusion: The movement of molecules from high to low concentration.
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Osmosis: The diffusion of WATER through a selectively permeable membrane
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Isotonic Solution: Equilibrium Water will move both in and out Cell will not change shape
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Hypertonic Solution: (Above strength) Solution has a higher solute concentration than the cell. Water will move out of cell Cell will shrink Hypotonic Solution: (Below strength) Solution has a lower solute concentration than the cell. Water will move into the cell Cell will swell
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Facilitated Diffusion: Use of a protein channel to cross through a cell membrane
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Active Transport: Sometimes materials need to move in opposite concentration gradients (low to high) Requires energy Endocytosis (into cell) Phagocytosis (takes food in) Pinocytosis (takes water in) Exocytosis (out of cell)
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Active Transport: Notice the energy (ATP) required to move molecules AGAINST the gradient!! (low to high)
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Exocytosis https://www.youtube.com/watch?v=U9p vm_4-bHg https://www.youtube.com/watch?v=U9p vm_4-bHg Endocytosis https://www.youtube.com/watch?v=W6r nhiMxtKU https://www.youtube.com/watch?v=W6r nhiMxtKU
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