21. Which interaction is most important in enhancing the solubility of macromole
ID: 33728 • Letter: 2
Question
21. Which interaction is most important in enhancing the solubility of macromolecules in water?
a. Hydrophobic interactions
b. Nonpolar covalent bonds
c. Hydrogen bonds
d. van der Waals forces
e. covalent and ionic bonds
22. What bond is responsible for the branch points in glycogen?
a. ?(1? 4) peptidyl linkages
b. C=C double bonds
c. ?(1? 6) glycosidic linkages
d. Fatty acids
e. 3'-5' phosphodiester linkages
28. Which interaction is most important in enhancing the solubility of macromolecules in water?
a. Hydrophobic interactions
b. Nonpolar covalent bonds
c. Hydrogen bonds
d. van der Waals forces
e. Ionic
29. What kind of bond results from an unequal sharing of electrons?
a. ionic bond
b. polar covalent bond
c. H bond
d. nonpolar covalent bond
e. hydrophobic
30. Where are hydrophobic interactions most likely to occur?
a. on the surface of a water-soluble protein
b. the core of a water-soluble protein
c. in contact with water molecules
d. between two charged molecules
e. between two ions
Explanation / Answer
21)
The hydrogen bonds are most important in enhancing the solubility of macromolecules in water. Option c is correct.
22)
?(1? 6) glycosidic linkages are responsible for the branch points in glycogen. Option c is correct.
28)
The hydrogen bond interaction is most important in enhancing the solubility of macromolecules in water. Option c is correct.
29)
The polar covalent bond results from an unequal sharing of electrons. Option b is correct.
30)
The hydrophobic interactions most likely to occur in the core of a water-soluble protein. Option b is correct.
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