Lipid molecules do not dissolve in water because all lipids are _______. Instead, lipid molecules attract other lipid molecules, forming tight clumps. When lipid molecules are stuck to a surface (such as hands or clothing), the lipid molecules stick to each other and the surface, and water will not wash them away. Fill in the blank: A. hydrophobic B. polypeptides C. acidic

Lipid molecules do not dissolve in water because all lipids are _______. Instead, lipid molecules attract other lipid molecules, forming tight clumps. When lipid molecules are stuck to a surface (such as hands or clothing), the lipid molecules stick to each other and the surface, and water will not wash them away. Fill in the blank: A. hydrophobic B. polypeptides C. acidic

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter3: The Chemistry Of Life: Organic Compounds

Section: Chapter Questions

Problem 8TYU: Fatty acids in phospholipids and triacylglycerols interact with one another by (a) disulfide bridges...

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Which of the following is the characteristic that is common to all lipids?* A. They are made up of lots of double bonds B. They are acidic when mixed with water C. They are insoluble in water D. They do not have high energy content
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You put albumin, the protein responsible for lipid transport through the blood, in methane, a hydrophobic solution. Would you expect albumin to still be functional? Yes the protein would still be functional because its primary structure remains intact Yes the protein would still be functional because it is used to carry lipids No the protein would not be functional because the peptide bonds would be dehydrated No the protein would not be functional because covalent bonds weaken and disrupt secondary structure No the protein would not be functional because the tertiary structure would change to maximize hydrophobic interactions
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.
Which of the following is not a function of proteins? a. transport molecules b. acting as messengers c. supports the structure d. store genetic information What monomers join to form polypeptides? a. fatty acids b. nucleotides c. amino acids d. monosaccharides Which of the following is NOT a basic component of every amino acid? a. R group b. Amino group c. Carboxyl group d. Hydroxyl group What chemical bond links the amino group of one amino acid to the carboxyl group of the other? a. Ionic bond b. Peptide bond c. Covalent bond d. Hydrogen bond
Which of the following describes a lipid? A. An organic molecule that consists of one or more chains of amino acids folded up in a specific shape B. A fatty, oily, or waxy organic compound often composed of fatty acids C. A molecule that consists primarily of carbon, hydrogen, and oxygen atoms in a ratio of 1:2:1 D. A molecule that consists of one or more strands of nucleotides
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the group of lipids that contains amphipathic molecules are a. phospholipids b. triglycerides c. steroids d. all of the above
The difference between cholesterol molecule and the hopanoid molecule in bacteria is that the hopanoids are: a) hydrophobic b) hydrophilic c) hopanoids have five rings in their chemical structure d) cholesterol has 5 rings in their chemical structure e) c & d
Which of the following is not associated with proteins? a.) amino acids b.) hydrogenation c.) peptide bonds d) bending and folding
Which of the following statements best explains the insolubility of lipids in water? a. The structure of lipids includes hydrophilic molecules. b. The polar portion of lipids is much larger than the nonpolar portion. c. The polar portion of lipids is much smaller than the nonpolar portion. d. The polar and nonpolar portions of lipids are of the same size.
out of proteins, lipids and carbohydrates present in a cell membrane, what is true? A. Lipids are maximum B. Carbohydrates are minimum C. Carbohydrates are maximum D. All three are in equal proportion