AQA GCSE Biology Unit 1- Summary notes

Diet and Exercise

Summary:

Healthy body = balanced diet + regular exercise

Healthy diet

• right balance of food intake and the amount of energy.
• Nutrient groups: 

-Carbohydrates 4 energy and cell structures

-Fat 4 energy, Insulation and cell structures

-Protein 2 control cell reactions (as enzymes) and build cell structures

-Vitamins and minerals - bodies - function well.

Malnourishment

• malnourished = unbalanced diet
• = Person - overweight/ underweight
• Unbalanced diet -> diseases
• lack of nutrients = deficiency diseases
• Excess food intake of high energy foods = type 2 diabetes

-disease -> person -> unable to control blood

sugar levels

-dangerous -> person -> carefully control their diet and monitor their blood sugar levels regularly.

Slimming programmes

• Person -> gains mass -> energy content of food intake is more than the amount of energy expended…