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Biochemistry - Water, pH and Macromolecules

Exercise : Water, pH and Macromolecules - Section 1
  • Water, pH and Macromolecules - Section 1
6.
Molecules in which the atoms are held together by __________ bonds have the strongest chemical linkages.
noncovalent
covalent
ionic
hydrogen
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Salt dissolves well in water as water molecules
form hydrogen bonds with the positively and negatively charged ions
make nonpolar covalent bonds with the positively charged ions only
surround the ions because of their charge but do not form hydrogen bonds
share electrons with the ions to make polar covalent bonds
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Buffer solutions
will always have a pH of 7
are rarely found in living systems
cause a decrease in pH when acids are added to them.
tend to maintain a relatively constant pH.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
A Bronsted acid becomes __________ upon losing a proton.
highly reactive
its conjugate acid
its conjugate base
a hydronium ion
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Most of the important functional groups in biological molecules contain
oxygen and/or nitrogen and are acidic
oxygen and a phosphate
nitrogen and a phosphate
oxygen and/or nitrogen and are polar
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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