Hint: think in terms of heat energy to create movement of the membrane. As temperature decreases, the fluidity of the membrane _ As temperature increases, fluidity of the membrane _ sat/unsaturated fats temperature and fluidity
Cell Membrane Fluidity Overview/Review What 3 things affect fluidity? 1. May (active/facilitated transport) or may not (passive transport) use ATP 3.
may go against concentration gradient (this needs ATP) allows things to bind so they can be transported in/out of the membrane Allow things to pass down concentration gradient (high-> low C). allows things to pass through membrane via channel/pore. Channel and Carrier T/F: the difference between integral and peripheral proteins is that peripheral proteins can come and go any time with relation to the cell membrane while the integral proteins that are lodged throughout the membrane must be removed only by detergents True Define the main difference(s) between channel and carrier proteins (the 2 types of integral protein)ĭifferences: like ATP involvement, form of flow (passive or active) Channel proteins type of membrane protein that goes through the membrane
What are the 2 types of integral proteins? i. what are the only ways that these proteins can be removed from the membrane define their orientation within the cell membrane When temps decrease, the membrane will be rigid, but the cholesterol will counteract making it more rigid. When temp increases it will be more fluid, but cholesterol prevents. Ie: has the opposite effect of what temperature will do. proteins List the function(s) of the following components of the overall cell membraneī) proteins a) plays a role in the integrity/fluidity of the membraneī) Act as receptors and transport molecules for the cell membrane cholesterol and fluidityĪ) as temp increases, cholesterol helps to _ the fluidity of the membraneī) as temp decreases, cholesterol helps to _ the fluidity of the membrane a) decrease (restrain movement of membrane, maintain integrity) Cell Membrane Overview and Fluid Mosaic Model What are the 3 major components of the overall cell membrane? 1. Which of the two types of carbon bonding forms "kinks" and plays a part in the fluidity of phospholipids membrane? i. What are two types of carbon bonds that can be found on carbon chain
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