GCSE AQA Biology 1 Diet and Exercise

Lilac Potato
Mind Map by Lilac Potato, updated more than 1 year ago
Lilac Potato
Created by Lilac Potato almost 5 years ago
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Mind map showing information about a balanced diet, metabolic rate, unbalanced diet & associated health problems, exercise, cholesterol & evaluating diets.
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Resource summary

GCSE AQA Biology 1 Diet and Exercise
1 Balanced Diet
1.1 Diet must provide energy you need (not more)
1.2 Food Groups
1.2.1 Carbohydrates

Annotations:

  • To release energy
1.2.2 Fats

Annotations:

  • To keep warm and release energy
1.2.3 Protein

Annotations:

  • For growth, cell repair and cell replacement
1.2.4 Fibre

Annotations:

  • To keep everything moving smoothly through digestive system
1.2.5 Vitamins and Mineral Ions

Annotations:

  • To keep your skin, bones, blood and everything else generally healthy
1.2.6 Water
2 Metabolic Rate

Annotations:

  • Speed at which chemical reactions happen in the body
2.1 Affected by...
2.1.1 Gender
2.1.2 Amount of exercise
2.1.3 Genetics
2.1.4 Muscle to Fat ratio
2.1.5 Size - more cells
3 Unbalanced Diet
3.1 Malnutrition

Annotations:

  • Having too much or too little of one or more food groups (having an unbalanced diet)
3.2 Eating too much...
3.2.1 Obesity

Annotations:

  • Caused by excess carbs or fat in diet (bad diet), overeating or lack of exercise
3.2.1.1 Common in developed countries
3.2.1.2 20% or more over max. recommended body mass
3.2.1.3 Health Problems

Annotations:

  • * Arthritis * Type 2 Diabetes * High Blood Pressure * Heart Disease * Some Cancers
3.2.1.3.1 More sat. fat increases cholesterol
3.2.1.3.2 Too much salt causes high blood pressure/heart problems
3.3 Eating too little
3.3.1 Particularly in developing countries
3.3.2 Health Problems

Annotations:

  • * Slow growth (in children) * Fatigue * Poor resistance to infection * Irregular periods (in women)
3.3.2.1 Deficiency Diseases

Annotations:

  • Caused by lack of vits and mins... * Vitamin C - Scurvy * Protein - Wasting of body tissue * Vitamin D - Rickets * Calcium - Weak bones and teeth * Iron - Anaemia * Vitamin A - Poor night vision
4 Doing exercise
4.1 More exercise usually = healthier
4.2 Increases amount of energy used and decreases amount stored as fat
4.3 Builds muscle - boosts metabolic rate
4.4 Can still be malnourised
5 Inherited Factors
5.1 May inherit underactive thyroid gland

Annotations:

  • Can lower metabolic rate and cause obesity
5.2 High cholesterol

Annotations:

  • Cholesterol is a fatty substance needed for good heath. Some inherited factors can increase its levels.
6 Evaluating Diets
6.1 Large survey can tell if diet is effective
6.2 To lose weight...
6.2.1 ...take in less energy than you use

Annotations:

  • Eat less fat or carbs and do more exercise
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