24. Metabolism and Nutrition

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.

List some factors that influence plasma cholesterol levels. Also list the sources and fates of cholesterol in the body.

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.