Cell Membrane Structure And Function Ppt

JacksonChapter 7Membrane Structure andFunction Lectures by Erin Barley Kathleen Fitzpatrick 2011 Pearson Education Inc.

Cell membrane structure and function ppt. 4-5 of Americans have at least one CF allele 900 different mutations F508. Thin barrier separating inside of cell cytoplasm from outside environment Function. Protein molecules floating on within the lipid layers help molecules move in out of the cell.

Allows substances in an out. Structures that carry out specific functions. Fluid constant motion can repair itself.

The Plasma membrane is a thin bi- layered structure which surrounds each cell consists of lipids phospholipids 75 cholesterol 20glycolipids 5 proteins partially or completely embedded carbohydrates etc 6-10 nm thick. Cell Membrane Outer membrane of cell that controls movement in and out of the cell Double layer. Osmosis is a kind of diffusion.

Learn the fluid state of membranes and the movement of its lipids and proteins. Summarize what makes osmosis a special type of diffusion. PowerPoint PPT presentation.

Selectively Permeable controls the movement of materials into and out of cell. Made of 2 thin layers of lipid molecules. The cell membrane is a multifaceted membrane that envelopes a cells cytoplasm.

Vesicles may combine with plasma membrane to secrete contents Lysosomes Contain digestive enzymes Functions Aid in cell renewal Break down old cell parts Digests invaders Vacuoles Membrane bound storage sacs More common in plants than animals Contents Water Food wastes Mitochondria Break down fuel molecules cellular respiration Glucose Fatty acids Release energy ATP. Cell Membrane Structure and Function. Explain the importance of cholesterol in maintaining fluidity of animal cells membranes.