Which of the following statements is TRUE about phospholipids? The hydrophobic fatty acid tails on phospholipids are repelled by water. The hydrophobic polar groups on phospholipids are attracted to each other. Enzymes can synthesize lipids directly into a membrane. O Enzymes release energy that is used to link phospholipids together. 000

Which of the following statements is TRUE about phospholipids? The hydrophobic fatty acid tails on phospholipids are repelled by water. The hydrophobic polar groups on phospholipids are attracted to each other. Enzymes can synthesize lipids directly into a membrane. O Enzymes release energy that is used to link phospholipids together. 000

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 6SQ: Cell membranes consist mainly of ________ and ________. a. lipids; carbohydrates b. phospholipids;...

See similar textbooks

Similar questions

Which of the following is a class of molecules that encompasses all of the other molecules listed? a. triglycerides b. fatty acids c. waxes d. steroids e. lipids f. phospholipids
Match each type of molecule with its description. _________ chain of amino acids _________ energy carrier _________ glycerol, fatty acids, _________ phosphate _________ chain of nucleotides _________ one or more sugar units a. carbohydrate b. phospholipid c. protein d. DNA e. ATP
Cell membranes consists mainly of ________ and ________ . a. lipids; carbohydrates c. lipids; phospholipids b. phospholipids; protein d. phospholipids; ECM
Which of the following is a true statement? Sphingolipids contain 2 hydrophobic, acyl chains Phospholipids contain 3 hydrophobic acyl chains Sphingolipids are completely no-polar, hydrophobic molecules The different types of phospholipids do not have different physical properties when in the membrane
Which of the following describes how regions of phospholipids are arranged in the cell membrane? Hydrophobic fatty acid regions are positioned toward polar environments. Hydrophilic phosphate regions are positioned toward nonpolar environments. Hydrophilic phosphate regions face each other within the interior of the cell membrane. Hydrophobic fatty acid regions face each other within the interior of the cell membrane.
Which of the following lipids are not found in animal membranes? (a) Phosphoglycerides (b) Cholesterol (c) Triacylglycerols (d) Glycolipids (e) Sphingolipids
Which of the following functions is NOT or cannot be performed by lipids? They can bind to DNA response elements to control gene expression. They can serve as chemical messengers. They can help in the selective permeability of membranes. They can form pores for the thermodynamically favored passage of ions across membranes.
Which of the following correctly describes how high levels of fatty acid structures contribute to the rigidity of the cell membrane? The cell membrane becomes more rigid as the amount of unsaturated fatty acids with a kinked structure increases. The cell membrane becomes more rigid as the amount of unsaturated fatty acids with a kinked structure increases. The cell membrane becomes more rigid as the amount of saturated fatty acids with a straight structure increases. The cell membrane becomes more rigid as the amount of saturated fatty acids with a straight structure increases. The cell membrane becomes less rigid as the amount of unsaturated fatty acids with a straight structure increases. , , The cell membrane becomes less rigid as the amount of unsaturated fatty acids with a straight structure increases. , , The cell membrane becomes less rigid as the amount of saturated fatty acids with a straight structure increases.
Which of the following is a storage form of lipid?a) Glycolipidb) Phospholipidc) Sufolipidd) Triacyl glycerol
Which of the following lipid types is NOT found in biological membranes? Glycerophospholipids. Cholesterol. Triacylglycerols. Sphingolipids. Gangliosides.
A higher cholesterol content in cell membranes increases membrane fluidity at low temperatures because: Group of answer choices cholesterol's fused ring structure prevents close packing of long-chain fatty acids in adjacent lipids. cholesterol's polar head group can form extensive interactions with water molecules. cholesterol increases hydrogen bonding between long-chain fatty acids in adjacent lipids. cholesterol's fused ring structure is highly flexible.
A phospholipid is a biomolecule composed of a phosphate group that is bonded to two lipid chains. Which of the following correctly describes the nature of those two components? (a) The phosphate group is hydrophobic, and the lipid chains are hydrophilic. (b) Both the phosphate group and the lipid chains are hydrophilic. (c) Both the phosphate group and the lipid chains are hydrophobic. (d) The phosphate group is hydrophilic, and the lipid chains are hydrophobic.