The sugars associated with glycoproteins and glycolipids of animal cell membranes  Maintain membrane fluidity at low temperatues Decrease membrane fluidity at high temperatures Serve as an energy source for the cell Serve as markers that distinguish one cell from another

the structure of the plasma membrane is best described as: two layers of phospholipids stacked on top of each other, with proteins embedded in the phospholipids Oa single layer of proteins and polysachharides mixed together two layers of proteins stacked on top of each other O many sheets of peptidoglycan stacked on top of each other O one layer of triglycerides on top of a layer of proteins

Below is the skeletal formula of a molecule typically found in cell membranes. What type of molecule is this and how can you tell? What are the functions of this type of molecule in the plasma membrane of a cell? CH3 CH₂) (CH₂) 16 CH3 Ko

Osmosis Water moving by diffusion across a membrane is called osmosis. Remember, diffusion is the movement of molecules from a high concentration to a lower concentration, in order to reach equilibrium. In the image below, the diamonds represent water and the circles represent solutes. Water will move by osmosis from the side with a higher concentration of water to a side with a lower concentration of water. In other words, water will move by osmosis from the side with a lower concentration of solute to the side with a higher concentration of solute. Water is attracted to solutes. 2. Use the following diagram to answer the questions below. Start by filling in the blanks for the missing % concentrations for beakers B and C. 150ml 100 Beaker A 0% Sugar 100% Water a) What is the solute concentration of: O Beaker A? O Beaker B? 150ml 100 Beaker B % Sugar 90% Water b) What is the solvent concentration of Beaker C? 150ml 100 Beaker C 40% Sugar % Water When we think about solutions in human…