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Transcript
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. 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. 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. Cell Membrane Section 7-3 Function: To regulate what enters and leaves the cell and aids in protection and support. 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 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. Draw a diagram that answers the following questions: (1) (2) What substances does the cell allow to go in and out? (labeled arrows) What substances does the cell keep in or out (circled labels). Diffusion: • The movement of molecules from high to low concentration. Osmosis: • The diffusion of WATER through a selectively permeable membrane Isotonic Solution: • Equilibrium • Water will move both in and out • Cell will not change shape 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 Facilitated Diffusion: • Use of a protein channel to cross through a cell membrane 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) Active Transport: Notice the energy (ATP) required to move molecules AGAINST the gradient!! (low to high) Exocytosis https://www.youtube.com/watch?v=U9p vm_4-bHg Endocytosis https://www.youtube.com/watch?v=W6r nhiMxtKU