24. Metabolism and Nutrition

A/an ________ is a nutrient that the body requires in large quantities, whereas a/an ________ is one that the body requires in much smaller quantities. A/an ________ is a nutrient that the body cannot produce and so must be supplied from the diet.

Your friend hears about the latest fad diet that consists entirely of fat. Predict the initial effects such a diet might have on your friend's concentration, memory, and other nervous system functions. Would you recommend this diet to anyone? Why or why not?

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

a. Vitamins and minerals are used as fuel sources for cells.

Which of the following yields the greatest caloric value per gram?

a. Fats

b. Proteins

c. Carbohydrates

d. All are equal in caloric value.

Oxidation is the _________________________, and reduction is the _________________________.

Gregor, a large, beefy man, came home from the doctor's office and complained to his wife that his blood tests 'were bad.' He told her that the doctor said he would have to give up some of his steaks and butter. He went on to mourn the fact that he would have to start eating more cottage cheese and olive oil instead. What kind of problem was revealed by his 'bad' blood tests? What do you think of his choice of food substitutes and why? What would you suggest?

While attempting to sail solo from Los Angeles to Tahiti, Seth encountered a storm that marooned him on an uninhabited island. He was able, using his ingenuity and a pocket knife, to obtain plenty of fish to eat, and roots were plentiful. However, the island was barren of fruits and soon his gums began to bleed and he started to develop several infections. Analyze his problem.