Chapter 7 Flashcards | Quizlet ~ Just News

Which molecule is less soluble in water-a fat or a phospholipid? Why? The Correct Answer is. A fat molecule is less soluble in water because it has three non-polar fatty acids and no polar or charged head like a phospholipid has.The replacement of one of the fatty acids with a polar chemical group makes phospholipids more soluble in water than fats.Distinguish betwen a saturated fat and an unsaturated fat. Why is such a distinction a life and death matter for many people? A phospholipid has two fatty acid tails attached to a glycerol backbone. What is the importance of these molecules. Define steroids and describe their chemical structure.Figure 1 summarizes the permeability properties of pure lipid bilayers. Lipid-soluble molecules can readily pass through a lipid bilayer. Examples include gas molecules such as oxygen (O 2) and carbon dioxide (CO 2), steroid molecules, and fat-soluble vitamins (A, D, E, and K).Surprisingly, some small polar molecules are capable of permeating the lipid bilayer without the aid of a membraneA fat molecule is less soluble in water because it has three non-polar fatty acids and no polar or charged head like a phospholipid has. Phospholipids have a polar region on one side; since water is a polar molecule, it can solubilize the phospholipids. Fats tend to be nonpolar and do not dissolve in water.Which molecule is less soluble in water-a fat or a phospholipid? Why? answer. A fat molecule is less soluble in water because it has three non-polar fatty acids and no polar or charged head like a phospholipid has. question. Which of these images shows the correct orientation of phospholipids in a biological membrane?

Chemistry Ii: Water and Organic Molecules

Phospholipids are soluble in both water and oil (amphiphilic) because the hydrocarbon tails of two fatty acids are still hydrophobic, but the phosphate group end is hydrophilic. Phospholipids are the major component of cell membrane to form lipid bilayers. Figure 21.1 shows the representative structure of common lipids (Gunstone et al., 2007).A fat molecule is less soluble in water because it has more carbons and hydrogens than a phospholipid. A fat molecule is less soluble in water because it has three non-polar fatty acids and no polar or charged head like a phospholipid has. A phospholipid is less soluble in water because it is smaller than a fat molecule.What functional feature(s) does the phosphate group contribute to the structure of a phospholipid? Select all that apply. negative charge to interact with water nonpolar group that avoids water place to attach another small charged molecule place where bonds can form between adjoining phospholipids place to attach fatty acidsA fat molecule is less soluble in water because it has three non-polar fatty acids and no polar or charged head like a phospholipid has. Which of these images shows the correct orientation of phospholipids in a biological membrane? Classifying amino acids I Classify these amino acids as acidic, basic, neutral polar, or neutral nonpolar.

Lipid Bilayer Permeability - PhysiologyWeb

The lipid (fat) molecules that make up membranes are amphipathic: they have a charged, hydrophilic 'head' and a hydrophobic hydrocarbon 'tail'. interactive 3D image of a membrane phospholipid (BioTopics) Notice that the entire molecule is built on a 'backbone' of glycerol, a simple 3-carbon molecule with three alcohol groups.A fat molecule is less soluble in water because it has three non-polar fatty acids and no polar or charged head like a phospholipid has. A fat molecule is less soluble in water because it has more carbons and hydrogens than a phospholipid. A phospholipid is less soluble in water because it is smaller than a fat molecule.A fat molecule is less soluble in water because it has three non-polar fatty acids and no polar or charged head like a phospholipid has. Which of these images shows the correct orientation of phospholipids in a biological membrane? Classifying amino acids I Classify these amino acids as acidic, basic, neutral polar, or neutral nonpolar.Vitamin Solubility Molecular Basis for Water Solubility and Fat Solubility. The solubility of organic molecules is often summarized by the phrase, "like dissolves like."This means that molecules with many polar groups are more soluble in polar solvents, and molecules with few or no polar groups (i.e., nonpolar molecules) are more soluble in nonpolar solvents.A fat molecule is less soluble in water because it has three non-polar fatty acids and no polar or charged head like a phospholipid has. Phospholipids have a polar region on one side; since water is a polar molecule, it can solubilize the phospholipids.

A fat molecule is less soluble in water as it has 3 non-polar fatty acids and no polar or charged head like a phospholipid has.

Phospholipids have a polar area on one facet; since water is a polar molecule, it will probably solubilize the phospholipids. Fats tend to be nonpolar and don't dissolve in water.