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.

Essential nutrients refer to nutrients that are __________.

Which of the following yields the greatest caloric value per gram?a. fats,b. proteins,c. carbohydrates,d. all are equal in caloric value.

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?

Which of the following fat-soluble vitamins is NOT stored in the body?

Which of the following is a micronutrient?

Which of the following substances is considered a provitamin?