Which of the following statements is consistent with the structure of biological membranes? A. All membrane proteins are integral and associate with the hydrophobic region of the membrane. B. Both proteins and lipids readily undergo transverse (flip-flop) diffusion from the inside to the outside of the membrane. C. Membranes are symmetric. D. The membrane lipids self-assemble to form the lipid bilayer. E. A biological membrane consists of proteins sandwiched between two layers of lipids, which is referred to as a lipid bilayer.
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Step 1: Biological membranes consist of a lipid bilayer with proteins embedded within it. Show more…
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Which of the following statements is (are) consistent with what is known about membranes? (a) A membrane consists of a layer of proteins sandwiched between two layers of lipids. (b) The compositions of the inner and outer lipid layers are the same in any individual membrane. (c) Membranes contain glycolipids and glycoproteins. (d) Lipid bilayers are an important component of membranes. (e) Covalent bonding takes place between lipids and proteins in most membranes.
Which of the following statements is (are) consistent with what is known about membranes? (a) $\mathrm{A}$ membrane consists of a layer of proteins sandwiched between two layers of lipicls. (b) The compositions of the inner and outer lipid layers are the same in any individual membrane. (c) Membranes contain glycolipids and glycoproteins. (d) Lipid bilayers are an important component of membranes. (e) Covalent bonding takes place between lipids and proteins in most membranes.
Which of the following statements are correct? Explain your answers. A. Lipids in a lipid bilayer spin rapidly around their long axis. B. Lipids in a lipid bilayer rapidly exchange positions with one another in their own monolayer. C. Lipids in a lipid bilayer do not flip-flop readily from one lipid monolayer to the other D. Hydrogen bonds that form between lipid head groups and water molecules are continually broken and re-formed. E. Glycolipids move between different membrane-enclosed compartments during their synthesis but remain restricted to one side of the lipid bilayer. F. Margarine contains more saturated lipids than the vegetable oil from which it is made. G. Some membrane proteins are enzymes. H. The sugar layer that surrounds all cells makes cells more slippery.
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