Biochemistry

Question: Buffer solutions [A]. will always have a pH of 7 [B]. are rarely found in living systems [C]. cause a decrease in pH when acids are added to them. [D]. tend to maintain a relatively constant pH. Answer: Option D Explanation: No answer description available for this question.

Question: A Bronsted acid becomes __________ upon losing a proton. [A]. highly reactive [B]. its conjugate acid [C]. its conjugate base [D]. a hydronium ion Answer: Option C Explanation: No answer description available for this question.

Question: Which of the following will easily dissolve in a polar solvent? [A]. gasoline (heptanes & octanes) [B]. methane [C]. argon [D]. sodium chloride Answer: Option D Explanation: No answer description available for this question.

Question: If protein is made exclusively from nonpolar amino acids, then it will this protein interact with water? [A]. be repelled by water [B]. It will be attracted to water [C]. It will form a membrane in water [D]. It will act as a buffer and stabilize the pH Answer: Option A Explanation: No answer…

Question: A biological polymer contains alanine, tyrosine, and lysine. Which of the following will be true about this molecule? [A]. DNA [B]. Strong base [C]. Phospholipid [D]. Protein Answer: Option D Explanation: No answer description available for this question.

Question: 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 Answer: Option B Explanation: No answer description available for…

Question: Molecules in which the atoms are held together by __________ bonds have the strongest chemical linkages. [A]. noncovalent [B]. covalent [C]. ionic [D]. hydrogen Answer: Option B Explanation: No answer description available for this question.

Question: 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 Answer: Option D Explanation: No answer description available for this question.

Question: 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 Answer: Option C Explanation:…

Question: Which of the following statements about water is correct? [A]. It is critical for many of the chemical processes found in living systems [B]. Polar substances that can form hydrogen bonds will dissolve in it [C]. Nonpolar substances like oils are not soluble in it [D]. All of the aboveAnswer: Option D