Chapter 3: Nutrition and Digestion CHAPTER QUESTIONS Biology Form Two Cold Q1: CHOOSE THE CORRECT ANSWER FROM THE FOLLOWING 1. The small intestine is specialized for absorption because it a. is the last section of the digestive tract and retains food the longest. b. has sac like extensions along its length that collect food. c. has no outlet so food remains within it for longer periods of time. d'has an extremely large surface area that allows extended exposure to 2. The primary function of the large intestine is to concentrate wastes into so form (feces) for release from the body. How does it accomplish this? a. By adding additional cells from the mucosal layer By absorbing water c. By releasing salt d. All of these are methods used by the large intestine. 3. Inactive forms of some molecules are secreted a. because they take less material and energy. b. because they must combine with water to be activated. c. so their activity can be regulated. d. to prevent them from clogging the gland fr