1. Which of the following polymers that we have discussed form branched chains? a. DNA polymers b. Proteins c. Carbohydrates d. All of the above. 2. Consider a reversible reaction between reactant A and product B. A B In an equilibrium mixture for this reaction, 40% of molecules are present as reactant (A). If we start with a mixture that contains 30% product (B), which of the following best describes what will occur over time for the reaction as written above? a. The net reaction will proceed spontaneously from left to right, consuming energy along the way. b. The net reaction will proceed spontaneously from left to right, releasing energy along the way. c. The net reaction will proceed spontaneously from right to left, consuming energy along the way. d. The net reaction will proceed spontaneously from right to left, releasing energy along the way. 3. In living organisms, most acids are classified as weak acids. Which of the following two acids is likely to donate the largest number of protons if equal amounts of each were placed into water and allowed to reach equilibrium? a. Acid 1 with pKa = 4.3 b. Acid 2 with pKa = 7.2 4. In regards to the previous question, the solution containing which acid would have the higher pH? a. The solution with Acid 1