SC BIOL 244 - Chapter 24: Nutrition (3 pages)

Previewing page 1 of 3 page document View the full content.
View Full Document

Chapter 24: Nutrition

Previewing page 1 of actual document.

View the full content.
View Full Document
View Full Document

Chapter 24: Nutrition


Nutrition and metabolism

Lecture number:
Lecture Note
University Of South Carolina-Columbia
Biol 244 - Human Anatomy/phys Ii

Unformatted text preview:

BIOL 244 Chapter 24 Nutrition Lecture 5 September 4 Nutrition substance in food that promotes normal growth maintenance repair Major nutrients carbohydrates lipids proteins energy yielding nutrients Others vitamins and minerals and water Carbohydrates Starch in grains and vegetables Complex carbohydrates Sugars in fruits sugarcane sugar beets honey and milk Includes monosaccharides and disaccharides Insoluble fiber cellulose in vegetables provides roughage Uses Glucose is the immediate fuel used by cells to make ATP cellular respiration glycolysis glucose splits into 2 pyruvates Neurons and RBCs rely almost entirely upon glucose Excess glucose is converted to glycogen or fat and stored Dietary requirements Minimum 100 g day to maintain adequate blood glucose levels Lipids Triglycerides Saturated fats in meat dairy foods and tropical oils Unsaturated fats in seeds nuts olive oil and most vegetable oils Cholesterol in egg yolk meats shell fish diary Uses Help absorb fat soluble vitamins Major fuel of hepatocytes and skeletal muscle Phospholipids are essential in all cell membranes and myelin sheaths for neurons Functions of fatty deposits adipose tissue Protective cushions around body organs Insulating layer beneath the skin Concentrated source of energy Functions of cholesterol Stabilizes membranes Precursor of bile salts and steroid hormones Proteins Eggs milk fish and most meats contain complete proteins Legumes nuts and cereals contain incomplete proteins lack some essential amino acids Legumes and cereals together contain all essential amino acids Uses Structural materials keratin collagen elastin muscle proteins Most functional molecules enzymes some hormones Use of amino acids All amino acids needed must be present for protein synthesis to occur adequacy of caloric intake Protein will be used as fuel if there is insufficient carbohydrate or fat available Metabolism biochemical reactions inside cells involving nutrients 2 types of reactions Anabolism synthesis

View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...

Join to view Chapter 24: Nutrition and access 3M+ class-specific study document.

We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Chapter 24: Nutrition and access 3M+ class-specific study document.


By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?