Introduction To Human Nutrition And Food

Question 1

Food choices

Answer 1

Social interaction
Availability, convenience and economy, benefits of home cooked meals
Positive and negative associations
Emotions- boredom, depression, anxiety, stress
Values- religious beliefs, political views, environmental concerns
Body weight and image
Nutritional and health benefits

Question 2

Nutrients

Answer 2

Water
Minerals
Vitamins
Carbohydrates
Proteins
Lipids

Question 3

Energy

Answer 3

Carbs- 17kJ/kg
Protein- 17kJ/kg
Lipids- 37kJ/kg

kJ to kCal= kJ x 0.24
kCal to kJ = kCal x 4.2

Question 4

Nutrition concerns in Australian population

Answer 4

High intake- energy dense/ nutrient poo foods, high salt/ sugar foods, alcoholic drinks

Low intake- fruit/ veg, nutrient dense foods, iron, calcium, fibre, carbohydrate (low GI), folic acid, zinc, selenium, iodine, vit D

Question 5

Key enzymes in small intestine

Answer 5

Peptidases- digest protein.
Trypsin- digest protein.
Dipeptidases- digest protein into single amino acids
Nucleases- digest foreign DNA
Lipases- finish lipid digestion by breaking fatty acid chains from glycerol
Amylases- digest carbohydrates
Disaccharides- digest carbohydrates

Question 6

Human nutrition

Answer 6

The study of nutrients and non-nutrients sourced from food in relation to human maintenance, growth, reproduction, health and disease.
Includes: food intake, absorption, biological assimilation, anabolism, catabolism and excretion.