Which of the following best describes a phospholipid? A. They contain a phosphate group in the place of one fatty acid B.The heads are polar C.They are energy storage molecules in the cell D. The tails are non-polar
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Which of the following best describes a phospholipid?
A. They contain a phosphate group in the place of one fatty acid
B.The heads are polar
C.They are energy storage molecules in the cell
D. The tails are non-polar
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- 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 tailsA 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.The diagram below illustrates the molecular structure of the cell membrane. The phospholipid bilayer of a cell membrane A B polar group с phosphate glycerol Which of the following is false about the way in which the cell membrane maintains its structure? D water water The different components of an individual phospholipid are held by covalent bonds. The attraction between the individual lipid tails inside the cell membrane is maintained by van der Waals forces. The attraction between the phosphate groups and the water molecules inside and out. side of the cell is maintained by hydrogen bonds. The bonds between the individual phospholipids that make up the cell membrane are connected by covalent bonds.
- 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 waterWhich 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 membraneSphingolipids are considered as phospholipids if: O The polar head group contains a single sugar (carbohydrate) such as glucose All sphingolipids are phospholipids O The polar head group contains a phosphate group The polar head group contains a complex sugar (carbohydrate) containg sialic acid
- H "H H H HO Choose all of the following are true of the given structure? (Choose all of the correct answers)When a small amount of oil is added to a beaker of water con phospholipids, the phospholipids will surround the oil droplets forming micelles. Draw several cartoon representations of phospholipid molecules (with a head and tails) to show the arrangement or orientation of phospholipids in a micelle.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.
- The following figure shows a typical phospholipid. Suppose this molecule was incorporated into a cell membrane. Which letter indicates the portion of the molecule that would be exposed to the aqueous environment? CH₂ I H₂C-N¹-CH₂ CH₂ A H₂C H₂C H₂C CH₂ CH₂O HO CH ₂ H₂C H₂C CH₂ OH HO O–CH, H₂C H₂C H₂C CH₂ HC CH₂ CH₂ CH-O CH-OH H₂C CH₂ H₂C CH₂ H₂C/ H₂C H₂C H₂C H₂C CH₂ H₂C CH₂ CH₂ CH₂ CH₂ CH₂ CH₂ CH₂ H₂C/Which of the following is true about phospholipid bilayers? The interior of the layer is highly hydrophilic. The hydrophobic tail faces the cell interior. The polar/hydrophilic tails face the cell interior and exterior. The polar/hydrophilic heads face the cell interior and exterior. The hydrophobic head faces the cell exterior.Which portion of a phospholipid is hydrophilic? saturated fatty acid tails none- a phospholipid is a lipid so the entire molecule is hydrophobic glycerol/phosphate heads unsaturated fatty acid tails