KAAP220 Lecture Notes - Fall 2018 Lecture 7 - Red blood cell, Phagocytosis, Cytosol
21 Sep 2018
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Document Summary
True or false, enzymes can be integrated into the plasma membrane. Total solute concentration in an aqueous solution. The sodium-potassium pump transports sodium and potassium by. Cellular uptake of ldl is accomplished by. Diffusion: net movement of a substance from higher concentration to lower concentration. Concentration difference when molecules are not evenly distributed. At an even distribution, molecular motion continues but no net movement. Slow in air and water but important over small distances. Movement of water and solutes across plasma membrane - selectively restricted diffusion. Lipids, lipid-soluble molecules, water, and soluble gases (o2 and co2) can diffuse across the lipid bilayer of the plasma membrane. Water, small water-soluble molecules, and ions diffuse through membrane channel proteins that vary in shape, size, and specificity. Net diffusion of water across a membrane. Maintains similar overall solute concentrations between the cytosol and extracellular fluid. Indication of force of pure water moving into a solution with higher solute concentration.
