Multiple ChoiceWhich feature of capillaries permits easy diffusion of gases into and out of them?71views
Multiple ChoiceWhich of the following plasma membrane structures primarily function to increase surface area for absorption of substances?63views
Multiple ChoiceWhich of the following applies to the formation of the phospholipid bilayer of the cell membrane?458views
Multiple ChoiceHow does the structure of the cytoplasmic membrane support the endosymbiotic theory as evidence for a common ancestor of all life?426views
Multiple ChoiceWhich of the following lipids are important components of the plasma (cell) membrane?81views
Multiple ChoiceWhy does a graph of the membrane potential of living pacemaker cells never demonstrate a flat line?73views
Multiple ChoiceThe lipids that form the main structural component of cell membranes are _____.94views
Multiple ChoiceIn which type of organism would a membrane rich in unsaturated fatty acids be most adaptive?74views
Multiple ChoiceWhich part of a phospholipid molecule is oriented towards the cytoplasm and extracellular fluids in a biological membrane?599views
Multiple ChoiceWhich of the following statements best describes the fluid-mosaic model of membrane structure?509views