Question: Bacteriorhodopsin [A]. absorbs light and pumps protons [B]. is an integral membrane protein [C]. contains primarily alpha-helical residues [D]. all of the above Answer: Option D Explanation: No answer description available for this question.

Question: Biological membranes are like water beds because [A]. they are always moving [B]. they (normally) do not leak their contents [C]. the membrane is thin compared to the enclosed volume [D]. all of the above Answer: Option D Explanation:…

Question: In active transport, the membrane structure that functions is [A]. cholesterol [B]. integral proteins [C]. carbohydrates [D]. hydrophobic molecules Answer: Option B Explanation: No answer description available for this question.

Question: Cholesterol is somewhat amphipathic due to [A]. the single hydroxyl along with the hydrocarbon nature of the remainder of the molecule [B]. the long branched hydrocarbon along with the four hydrocarbon rings [C]. the five-methyl groups along with the…

Question: Cholesterol is essential for normal membrane functions because it [A]. plugs up the cardiac arteries of older men [B]. cannot be made by higher organisms [C]. keeps membranes fluid. [D]. spans the thickness of the bilayer Answer: Option C…

Question: Exocytosis is the secretion of proteins [A]. out of the cell across the plasma membrane into the extracellular space [B]. out of the cell across the plasma membrane into the intracellular space [C]. is the uptake of macromolecules from…

Question: In Fluid mosaic model, the biological membrane can be viewed as [A]. two dimensional solutions of oriented lipids and globular proteins [B]. three dimensional solutions of oriented lipids and globular proteins [C]. two dimensional solutions of oriented lipids and…

Question: Membrane lipids are [A]. hydrophilic [B]. hydrophobic [C]. ampiphillic [D]. none of these Answer: Option A Explanation: No answer description available for this question.

Question: In membranes, lipids are [A]. glycerophospholipids [B]. sphingolipids [C]. sterols [D]. all of these Answer: Option D Explanation: No answer description available for this question.

Question: Peptidoglycan is a complex consisting of [A]. oligo-saccharide and protein [B]. polysaccharide and protein [C]. mono-saccharide and protein [D]. aminoacid and carbohydrate Answer: Option A Explanation: No answer description available for this question.