Problem:
Question 1: 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
Question 2: 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
Question 3: 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
Question 4: 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
Question 5: 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
Give reasoning with your answer.