Biochemistry Objective Questions { Water, pH and Macromolecules }

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15. A compound that is capable of forming hydrogen bonds with water

A. is probably held together by noncovalent bonds

B. contains at least some polar covalent bonds

C. should act as a good buffer for acids and bases

D. does not dissolve well in water

16. A biological polymer contains alanine, tyrosine, and lysine. Which of the following will be true about this molecule?

C. Phospholipid

17. The effectiveness or capacity of a buffer solution can be affected by

A. molar concentration of the buffer components

B. concentration of the conjugate base to the weak acid

C. both (a) and (b)

D. temperature of buffer components

18. Who discovered and described the blood groups (ABO) classification?

A. Theodor Kocher

B. Karl Landsteiner

C. Otto Warburg

19. H2O and CH4 are both examples of

D. none of these

20. Hydrogen bonds and hydrophilic interactions are types of

A. weak chemical bonds that hold together the atoms within a molecule

B. strong chemical bonds that hold together the atoms within a molecule

C. weak chemical bonds that link together separate molecules

D. strong chemical bonds that link together separate molecules

21. A solution with pH = 5 is __________ than a solution with pH = 7.

A. 2 times more basic

B. 10 times more basic

C. 10 times more acidic

D. 100 times more acidic

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