Which of the following would be most likely to interfere with the proper insertion of a protein into the plasma membrane? Select the best answer. Options: The switch of a polar amino acid to a non-polar in a transmembrane region of the protein. The switch of a non-polar amino acid to a polar in a transmembrane region of the protein. The switch of a non-polar amino acid to a polar in a cytoplasmic region of the protein. The switch of a polar amino acid to a non-polar in a cytoplasmic region of the protein.

Which of the following would be most likely to interfere with the proper insertion of a protein into the plasma membrane? Select the best answer. Options: The switch of a polar amino acid to a non-polar in a transmembrane region of the protein. The switch of a non-polar amino acid to a polar in a transmembrane region of the protein. The switch of a non-polar amino acid to a polar in a cytoplasmic region of the protein. The switch of a polar amino acid to a non-polar in a cytoplasmic region of the protein.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 7RE

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Which plasma membrane component can be either found on its surface or embedded in the membrane structure? a. protein b. cholesterol c. carbohydrate d. phospholipid
Which of the following best describes an integral membrane protein? A.A protein that has an extracellular domain, a membrane-spanning domain that spans the lipid bilayer of the plasma membrane, and an intracellular domain. B.A protein that peripherally associates with the membrane via ionic interactions another protein embedded in the membrane. C.A protein that is soluble in the cytoplasm. D.A protein that peripherally associates with the membrane via ionic interactions between polar charged amino acids and the polar head groups of the phospholipids in the membrane.
Which of the following would render the plasma membrane more fluid? Group of answer choices Increased number of phospholipids with short fatty acid tails Decreased temperature Decreased number of cis-bonds Increased number of saturated phospholipid fatty acid tails
Which of the following lipid components of the eukaryotic plasma membrane would be associated with the highest membrane fluidity? a triglyceride with unbranched, saturated, short-chain fatty acids a monoglyceride with unbranched, saturated, short-chain fatty acids a triglyceride with unbranched, saturated, long-chain fatty acids a monoglyceride with branched, unsaturated, short-chain fatty acids a diglyceride with unbranched, saturated, long-chain fatty acids
A transmembrane protein has the following properties: it has two binding sites, one for solute A and one for solute b. The protein can undergo a conformational change to switch between two states: either both binding sites are exposed exclusively on one side of the membrane or both binding sites are exposed exclusively on the other side of the membrane. The protein can switch between the two conformational states only if both binding sites are occupied or if both binding sites are empty, but cannot switch if only one binding site is occupied. Do you need to specify any additional properties to turn this protein into a symport that couples the movement of solute A up its concentration gradient to the movement of solute b down its electrochemical gradient?
A transmembrane protein has the following properties: it has two binding sites, one for solute A and one for solute b. The protein can undergo a conformational change to switch between two states: either both binding sites are exposed exclusively on one side of the membrane or both binding sites are exposed exclusively on the other side of the membrane. The protein can switch between the two conformational states only if both binding sites are occupied or if both binding sites are empty, but cannot switch if only one binding site is occupied. What kind of protein do these properties define?
For a protein to be an integral membrane protein, it would have to be amphipathic, which means that it ________. has only hydrophilic regions has only hydrophobic regions has both hydrophilic and hydrophobic regions exposed on only one surface of the membrane
Would substances be able to pass through the plasma membrane if the phospholipid tails of the plasma membrane were both saturated fatty acids? No, saturated fatty acids would cause the plasma membrane to loss the fluidity it has by having some unsaturated fatty acids present. No, saturated fatty acids would cause the plasma membrane to be more fluid. Yes, saturated fatty acids would cause the plasma membrane to be a solid versus liquid. Answer not listed.
Which of the following is most likely NOT a function of Peripheral Proteins? support for membranes enzymes anchor for integral membrane proteins receptors
What would happen in each of the following cases where something related to intracellular transport is altered? Assume in each case that the protein involved is a soluble protein, not a membrane protein. State where each protein would be located and explain each of your answers. You add a signal sequence (for the Golgi) to the N-terminal end of a normally cytosolic protein. You change the hydrophobic amino acids in an ER signal sequence into other, hydrophobic, amino acids.
Which of the following statements about a typical plasma membrane is correct? The hydrophilic interior of the membrane is composed primarily of the fatty acid tails of the phospholipids. Carbohydrates on the membrane surface are important in determing the overall bilayer structure. Phospholipids are the primary component that determines which solute can cross the plasma membrane. The two sides of the plasma membrane have different lipid and protein composition. The plasma membrane is covalently linked network of phospholipids and proteins that controls the movement of solutes into and out of a cell.
Which of these structures would you expect to find as part of the transmembrane portion of an integral membrane protein? Structure B would be part of the transmembrane domain of an integral membrane protein. Structure C would be part of the transmembrane domain of an integral membrane protein. Structure A would be part of the transmembrane domain of an integral membrane protein.

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	The switch of a polar amino acid to a non-polar in a transmembrane region of the protein.
	The switch of a non-polar amino acid to a polar in a transmembrane region of the protein.
	The switch of a non-polar amino acid to a polar in a cytoplasmic region of the protein.
	The switch of a polar amino acid to a non-polar in a cytoplasmic region of the protein.