... 2 pounds a week. Quick and easy weight-loss diets are fads ;because most are unbalanced, puting emphasis on one kind of food and excludeing others. To function, humans must have nutrients. The most important nutrients for people are proteins, carbohydrates, fats and oils, minerals, vitamins, and water. Proteins are made up of amino ... except for water and, maybe, fat. Animal foods such as meat, fish, poultry, milk, and eggs are rich in protein. Good plant sources of protein are beans, peas, nuts, bread, and cereals. Combining plant sources, such as peanut butter with whole-grain bread ...

• Word Count: 1670
• Approx Pages: 7
• Grade Level: High School

... carbohydrate. It is a branched structure of thousands of glucose residues. In vertebrates it is characteristically found as tiny granules in liver and muscle cells. Cellulose is the structural component of plant wall cells. It consists of long chains of glucose residues. Hydroxyl groups project outwards to form hydrogen bonds with hydroxyl groups of adjacent chains; this gives the whole structure a ... high tensile strength. Cellulose is fully permeable to water and solutes and therefore dos not affect exchange of materials between the cell and environment. Chitin is structurally very si...

• Word Count: 1520
• Approx Pages: 6
• Grade Level: High School