PPT-Lesson 7 – Cell Membranes and the

Cytoskeleton Hank in da club Crash Course Biology Cell membranes Cell membranes On your desks draw out the structure of the plasma membrane of a eukaryotic cell Cell Membrane From now on we will refer to the exterior cell membrane as the . Bell task: Transport across membranes . Transport . Concentration gradient . Energy (ATP). Simple diffusion . Down (high to low) . Facilitated diffusion . yes. Active transport . Bell task: Transport across membranes . Cytoskeleton. Hank – in da club. Crash Course Biology - Cell membranes. Cell membranes. On your desks draw out the structure of the plasma membrane of a eukaryotic cell.. Cell Membrane. From now on we will refer to the exterior cell membrane as the . Membrane composition . and . fluidity. . You Must Know. Why membranes are selectively permeable.. The structure and function of membrane proteins.. Amphipathic. . molecules. Fluid Mosaic Model. Figure 5.4-1. Egg-Eggs Two. Shell. White or brown. Depends on ear flap color. Made of Calcium carbonate. Color does not affect flavor. Shell Membranes. 2 membranes inside each shell. Air cell forms between these membranes. CELL JUNCTIONS. In certain tissues the membranes of adjacent cells may join and form a junction called a cell junction.. These are specialized areas of the cell membrane that provide contact between the cells.. Roles of Biological Membranes. The Lipid Bilayer and the Fluid Mosaic Model. Transport and Transfer Across Cell Membranes. Specialized contacts (junctions) between cells. What are the major roles of biological membranes?. Leaving Certificate Biology. Higher Level. Selective Permeability. Cell membranes are selectively permeable meaning they can control what enters and leaves the cell. Selective permeability is controlled by proteins embedded in the cell membrane. Lesson 3.2: The Integumentary System. Lesson 3.3: Injuries and Disorders of the Skin. Membranes and the Integumentary System. Lesson 3.1. Body Membranes. Membranes and the Integumentary System. epithelial membranes. Learning . Goal . Describe . the composition and function of the lipid bilayer in cell membranes.. Cell Membranes. Cell membranes. . are semipermeable so that nutrients can enter the cell and waste products can leave.. & . Movement Across Them . Cell membrane channels. Need to make “doors” through membrane . protein channels allow substances in & out. specific channels allow specific material in & out. All organisms are made of cells. Cell structure is correlated to cellular function. All cells are related by their descent from earlier cells. The Fundamental Units of Life. to study cells. Though usually too small to be seen by the unaided eye, cells can be complex. . Undergraduate – Graduate. Histology Lecture . Series. Larry . Johnson, Professor. Veterinary Integrative Biosciences. Texas A&M University. College Station, . TX 77843. VIBS 443 and VIBS 602 . 1. 2. Peroxisomes. Peroxisomes. = Membrane-bound organelles that contain specialized teams of . enzymes . for . specific metabolic pathways; all contain . peroxide-producing . oxidases. .. • Bound by a single membrane. 1 life on earth - multimedia, information, facts, and more. Learn more at eol.org . Archaea Archaea are a domain of single - celled microorganisms. They have no cell nucleus or any other organelles