Exam 35: Nutrition and Digestion

Your roommate tells you that because she has no time to eat healthy foods, she is taking megadoses of vitamins. You warn her that this may be dangerous, because certain vitamins can accumulate in body fat. Megadoses of which of the following vitamins would be most likely to cause toxic effects?

Which of the following produces the cellulose- digesting enzyme (cellulase) in a cow's digestive tract?

What is the primary energy- storage molecule in plants?

Hydrochloric acid formed in the stomach converts pepsinogen into pepsin, which enables the stomach to begin digesting _ _.

The small intestine is the principal site of both digestion and nutrient absorption.

Which nutrients provide energy for animals?

Which of the following is responsible for stimulating the release of pancreatic juice into the small intestine?

Humans are able to synthesize all the vitamins they need.

How would you classify an organism that consumes and digests both plant and animal sources of nutrients?

The bacterium shown to be associated with the majority of gastric ulcers is

Which of the following help neutralize free radicals that form in the body?

Bacteria in the large intestine are able to manufacture

Sea anemones, hydra, and sea jellies digest food extracellularly within a

Briefly discuss the major advantages of fats as energy- storage molecules.

The large intestine is the longest part of the digestive tract.

Which of the following is a water- soluble vitamin?

Explain why pancreatic juice is important in the digestive process.

Which of the following best describes the process of bringing food into the digestive system through an opening?

Bile is produced by the liver and stored in the gallbladder. The function of bile is to

Wolves, seals, and cats have enlarged canines and molars designed for shearing rather than grinding or chewing. How would you classify these animals on the basis of the type of teeth they possess?