1. In the "fluid mosaic model of the plasma membrane, what does mosale" refer to? A) the membrane has two different side

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1 In The Fluid Mosaic Model Of The Plasma Membrane What Does Mosale Refer To A The Membrane Has Two Different Side 1 (71.32 KiB) Viewed 29 times

1. In the "fluid mosaic model of the plasma membrane, what does mosale" refer to? A) the membrane has two different sides. B) the membrane Is a lipid bilayer, made from two different monolayers. C) the lipid bilayer has different proteins embedded in it. D) the lipids on each side of the membrane are different. E) peripheral proteins are mainly on the external side of the membrane. 2. Membrane components are generally amphipathic, which means what? A) they cross through the entire membrane B) they have both hydrophilic and hydrophobic domains C) they all form alpha helices D) they do not interact with water E) they carry excess charges 3. What general features do phospholipids share in common? A) a nonpolar head group and one fatty acid tall B) a nonpolar head group and 2 fatty acld tails C) a polar head group and one fatty acid tail D) a polar head group and 2 fatty acid talls E) a polar head group and 3 fatty acid talls 4. Phospholipids self-assemble mainly into what type of structures? a. Micelles b. Upid monolayers c. Flat Lipids bilayer sheets d. Closed lipid bilayer vesicles 5. What type of lipids would you expect to find concentrated in lipid rafts? A) Poly-unsaturated phospholipids B) Saturated phospholipids Phospholipids with short hydrocarbon tails D) Sterolds E) only proteins are found in lipid rafts 6. What is the least likely type of movement for a phospholipid in a bilayer? A. Rotation/Spinning B. Lateral diffusion C Flexing of the hydrocarbon tails D. Flipping to other side E Dissolving in a detergent bol 7. The presence of cholesterol in the plasma membranes of some animals. A) enables the membrane to stay fluid at lower temperatures. B) enables the animal to remove hydrogen atoms from saturated phospholipids. C) enables the animal to add hydrogen atoms to unsaturated phospholipids. D) makes the membrane stiffer at very low temperatures E) makes the animal more susceptible to circulatory disorders.