Why do phospholipids tend to spontaneously orient themselves into something resembling a membrane such as the lipid-bilayer sphere, single-layer lipid sphere, and lipid-bilayer sheet?        a. Phospholipids are amphipathic molecules. The polar head faces towards water and the nonpolar fatty acid tails face towards other fatty acid tails.        b. Phospholipids are lipophilic molecules. The polar head faces towards water and the nonpolar fatty acid tails face towards other fatty acid tails        c. Phospholipids are amphipathic molecules. The nonpolar head faces towards other fatty acid tails and the polar fatty acid tails face towards water.        d. Phospholipids are hydrophilic molecules. The polar head faces towards water and the nonpolar fatty acid tails face towards other fatty acid tails.

Q: a-helical

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Q: Decide whether each of the following molecules will pass through a lipid bilayer. If the molecule…

A: Passing through the liquid bilayer depends on the chemical properties and size of the molecules. The…

Q: Which one of the these primary protein structures is most likely to form an alpha helix that would…

A:

Q: Which of the following is false about the way in which the cell membrane maintains its structure? A…

A: The cell membrane or the plasma membrane is the outer covering of a cell that encloses inner…

Q: Phospholipids are usually described as being able to diffuse freely through a lipid membrane.  What…

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Q: Below is the skeletal formula of a molecule typically found in cell membranes. What type of molecule…

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Q: c) What part or parts of a cellular membrane play(s) a role in determining the fluidity of the…

A: Consists of a single phosphate head, and two fatty acid tails. All hydrophilic heads are on the…

Q: Which of the following best describes the lipid aggregates known as liposomes? A. They contain a…

A: Liposomes are microscopic spheres composed of phospholipids that form a bilayer membrane, similar to…

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Q: Diagram 1 below illustrates a model of a phospholipid. Diagram 2 is a schematic of a single layer of…

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Q: A cholesterol molecule consists of a polar region (shown in white) and a nonpolar region (shown in…

A: * The lipid bilayer or phospholipid bilayer is a thin polar membrane which is made up of two layers…

Q: The following figure shows a typical phospholipid. Suppose this molecule was incorporated into a…

A: Non-polar macromolecules called lipids have a variety of functions in the body. Fatty acids that…

Q: Consider molecule #1. How would these molecules arrange themselves when added to water? A. Would…

A: Lipids are a collection of molecules which are made up of an extensive carbon skeleton and are…

Q: Other cell membrane molecules include a compound called  __________, which functions to provide…

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Q: Which statement is correct about the phospholipids in membranes? The polar heads face inward The…

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Q: why do transmembrane proteins cross the phospholipid bilayer as an a-helix or B-barrel? A. These…

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Q: Consider the following diagram of the cell membrane. Which of the statements is NOT true regarding…

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Q: How would increasing the amount of saturated phospholipid tails in the cell membrane affect the…

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A: All the cells have an outer layer that provides rigidity and protection. This layer is called plasma…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.