Question: Proteins

Answer: Crucial components of all body tissues

Question: Proteins..

Answer: They are large, very complex molecules found in the cells of all living things. Best known as part of our muscle mass. Also critical components of all tissues of the human body (bones, blood, skin).

Question: Proteins…

Answer: Function in metabolism, immunity, fluid balance and nutrient transport. Can provide energy in certain circumstances (4 kcal per gram).

Question: How does proteins differ from carbs and lipids?

Answer:

Question: The building blocks of proteins and amino acids

Answer: Amino acids - molecules composed of a central carbon atom connected to four other groups: amine group, acid group, hydrogen group, a side chain.

Question: Proteins….

Answer: What makes protein unique is its side chain. There are potentially an infinite number of u inquest types of proteins in living organisms. Most of the body’s proteins are made from combinations of just 20 amino acids.

Question: We must obtain essential amino acids from food

Answer: Of the 20 amino acids, 9 are classified as essential. Essential amino acids are not produced by the body (or not produced in sufficient amounts).

They must be obtained from food.

Question: Why do we need proteins?

Answer: Too many to list in the book. Proteins function most effectively when we also consume adequate amounts of energy as carbs and fat. When there is not enough energy available, the body uses proteins as an energy source. This limits their availability for needed functions.

Question: Proteins contribute to cell growth, repair and maintenance

Answer: All cells are constantly turning over. Red blood cells love for only 3-4 months. The cells lining the intestinal tract are replaced every 3-6 days.

Question: Proteins act as enzymes and hormones

Answer: Enzymes are compounds that speed up chemical reactions. Each cell contains thousands of enzymes that facilitate specific cellular reactions. Hormones are substances that act as chemical messengers in the body.