The hydrophobic effect causes lipid molecules to aggregate. This occurs primarily in order to _____. Group of answer choices a. decrease the ordering of water molecules around hydrophobic solutes b. increase the ordering of lipid molecules in the presence of water c. decrease the ordering of lipid molecules in the presence of water d. increase the ordering water molecules around hydrophobic solutes

The hydrophobic effect causes lipid molecules to aggregate. This occurs primarily in order to _____. Group of answer choices a. decrease the ordering of water molecules around hydrophobic solutes b. increase the ordering of lipid molecules in the presence of water c. decrease the ordering of lipid molecules in the presence of water d. increase the ordering water molecules around hydrophobic solutes

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter3: Cell Structure

Section: Chapter Questions

Problem 8SQ: In a lipid bilayer, the of all the lipid molecules are sandwiched between all of the __________. a....

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A phospholipid can be used to do all the following except O Increase the fluidity with the presence of unsaturated fatty acid tails. create a bi-layer membrane using amphipathic properties. form a micelle using a single layer and a hydrophobic core. O connect to a glycerol molecule to create a triacylglyceride.
In the figure below showing changing surface charges on a protein molecule, explain why the surface charge is positive at low pH, then ends up negative at high pH. | At lower values of pH, proteins i At higher values of pH, proteins | will carry more positive charge. will carry more negative charge. Surface +1 -1 charge pH 4 pH 5 pH 6 pH 7 pH 8 pH 9 рH 10 pH 11 Isoelectric point (pl) = 6.8 0010 0010 n
Lipids are largely __ molecules because they are made of mostly -_ bonds. O hydrophobic, nonpolar hydrophobic, polar hydrophilic, nonpolar hydrophilic, polar
A(n) _______ substance repels water. a. acidic b. basic c. hydrophobic d. polar
In a lipid bilayer, the of all the lipid molecules are sandwiched between all of the __________. a. hydrophilic tails; hydrophobic heads b. hydrophilic heads; hydrophilic tails c. hydrophobic tails; hydrophilic heads d. hydrophobic heads; hydrophilic tails
An important aspect of transport by facilitated transporters and pumps is _______. rigidity secondary structure change of amino acids conformational changes
Of the choices below, which amino acid is most likely to hold a membrane protein in place so that the protein does not stray too far from the center of the lipid bilayer? O Lys O Ala O Phe O Trp O Leu
Which of the following statements is TRUE about phospholipids?
Which of the following is the primary driving force for protein folding? disulfide bridges internal hydrogen-bonds the hydrophobic effect Van der Waals forces O salt bridges
Lipids that contain a high number of double bonds in their fatty acid chains will ___.contain more hydrogens than lipids that contain few double bonds in their fatty acid chains likely be liquid at room temperature have more carbons that rotate freely than lipids that contain few double bonds in their fatty acid chains pack very tightly together at room temperature have a higher melting temperature than lipids that contain few double bonds in their fatty acid chains
Which of the following descriptions is the best for a phospholipid? A polar lipid molecule that fully repels water through all its parts A lipid molecule that consists of two fatty acids, glycerol and a phosphate group and is amphipathic A polar lipid molecule that is made nonpolar by the addition of a phosphate group O A polar lipid molecule that fully interacts with water O A nonpolar lipid molecule that is made fully polar by the addition of a phosphate group so it can interact with water
How do phospholipids interact with water molecules? Phospholipids do not interact with water because water is polar and lipids are nonpolar. The polar heads interact with water; the nonpolar tails do not. The polar heads avoid water; the nonpolar tails attract water (because water is polar and opposites attract). Phospholipids dissolve in water.