Proteins - PowerPoint PPT Presentation

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Proteins

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  1. Proteins • Diverse, yet vital molecules which make up over 50% of organic matter in body • Structure:

  2. Food Sources of Proteins: • Types & Functions of Proteins: • Antibodies – • Hormones (other than sexual) – • Examples:

  3. Types & Functions of Proteins(cont.): • Transport Proteins – • Enzymes – • Example:

  4. Nucleic Acids • Structure: • Functions:

  5. Types & Functions of Nucleic Acids: • DNA (Deoxyribonucleic Acid) – • RNA (Ribonucleic Acid) – • ATP (Adenosine triphosphate)- ATP Nucelic Acid Tutorial

  6. Nutrition – Dietary Requirements • The dietary amount of nutrients varies by body size& metabolic rate. • The general guidelines for calorie consumption according to the 2010 Dietary Guidelines for Americans are:

  7. Energy Values of Food • When nutrients are broken down, they yield different amounts of energy: • Carbohydrates & Proteins = • Lipids = • Depending on activity level, a female (age 16-20) should consume

  8. Basal Metabolic Rate (BMR): • The rate that the body expends energy at rest

  9. Body Mass Index (BMI): • Formula: • A person is classified as either underweight, normal weight, overweight, or obese

  10. Obesity in the United States http://www.cdc.gov/obesity/data/adult.html

  11. Vitamins • Classified on the basis of solubility:

  12. Minerals • Mineral toxicity can result from too much of a mineral or from overexposure to industrial pollutants, household chemicals, or certain drugs

  13. Starvation • A healthy human can survive • Symptoms of starvation include low blood pressure, slow pulse, chills, hair loss, and poor immunity • Common nutritional disorders include: • Marasmus – • Kwashiorkor – • Anorexia nervosa – • Bulimia –