WGU D440 Saunders Review EXAM QUESTIONS WITH ACTUAL VERIFIED
ANSWERS ALREADY GRADED A+ REVISED BY EXPERTS
Carbohydrates
1. Carbohydrates are the preferred source of energy.
2. Each gram of a carbohydrate produces 4 kcal/g. Carbohydrates promote normal fat metabolism;
inadequate carbohydrate intake affects metabolism.
3. Carbohydrates serve as the main source of fuel, providing glucose for the brain and for the skeletal
muscles during exercise; carbohydrates also promote erythrocyte and leukocyte production, and cell
function.
4. Major food sources of carbohydrates include milk, grains, fruits, and vegetables.
Fats
1. Fats provide a concentrated source and a stored form of energy.
2. Fats protect internal organs and maintain body temperature.
3. Fats enhance absorption of the fat-soluble vitamins.
4. Fats provide 9 kcal/g.
5. Inadequate intake of essential fatty acids leads to clinical manifestations of sensitivity to cold, skin
lesions, increased risk of infection, and amenorrhea in women.
6. Diets high in fat can lead to obesity and increase the risk of cardiovascular disease and some cancers.
Proteins
Proteins
1. Amino acids, which make up proteins, are critical to all aspects of growth and development of body
tissues and provide 4 kcal/g.
2. Proteins build and repair body tissues, regulate fluid balance, maintain acid-base balance, produce
antibodies, provide energy, and produce enzymes and hormones.
, 3. Essential amino acids are required in the diet because the body cannot manufacture them.
4. Complete proteins contain all essential amino acids; incomplete proteins lack some of the essential
fatty acids.
5. Inadequate protein can cause protein energy malnutrition and severe wasting of fat and muscle tissue.
Major stages of the life span with specific nutritional needs are
pregnancy, lactation, infancy, childhood, and adolescence. Adults and older adults may experience
physiological changes related to aging that will influence individual nutritional needs.
Define vitamin, and the role they play in the body.
1. Vitamins facilitate the metabolism of proteins, fats, and carbohydrates and act as catalysts for
metabolic functions.
2. Vitamins promote life and growth processes and maintain and regulate body functions.
3. Fat-soluble vitamins A, D, E, and K can be stored in the body, so an excess can cause toxicity.
4. The B vitamins and vitamin C are water-soluble vitamins, are not stored in the body, and can be
excreted in the urine.
Define Minerals and electrolytes and their functions.
1. Minerals are components of hormones, cells, tissues, and bones.
2. Minerals act as catalysts for chemical reactions and enhancers of cell function.
What are Water-Soluble Vitamins?
Folic acid:
Niacin:
Vitamin B1 (thiamine):
Vitamin B2 (riboflavin):
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