For good health, what must your diet provide?
The energy you need (but no more)
Give the role of carbohydrates
Give the roles of fats
1. Keeping warm
2. Releasing energy
Give the roles of proteins
2. Cell repair
3. Cell replacement
Give the role of fibre
Allows the muscles in our intestines to move food through out system by peristalsis
Why do we need small amounts of various vitamins and mineral ions?
and everything else
The chemical reactions in the body that keep you alive
Why do our bodies need energy?
To fuel our metabolisms
Define 'metabolic rate'
The speed at which the chemical reactions in your body that keep you alive happen
Do resting metabolic rates differ from person to person?
Yes - there are slight variations
Give a reason why one person's resting metabolic rate might be higher than another's
Muscle needs more energy than fatty tissue, so having a higher proportion of muscle to fat (all other things being equal) will result in a higher metabolic rate
Are you more likely to have a higher metabolic rate if you are bigger, or smaller?
The bigger you are, the more cells you have, so the more energy your body needs to be supplied with
Does your sex affect your metabolic rate?
Natal men tend to be slightly bigger than natal women, and have a larger proportion of muscle, resulting in a higher metabolic rate.
Why can regular exercise boost your resting metabolic rate?
Because it builds muscle
Name 5 factors that affect your resting metabolic rate
1. Your sex
2. Other genetic factors
3. Amount of exercise you do
5. How big you are
What happens to your metabolic rate when you exercise?
It increases and stays high for some time after
Because your body needs more energy
Why do builders require more energy per day than office workers?
Because they have more active jobs so their metabolic rates are higher
What does your activity level affect?
The amount of energy your diet contains
e.g. if you're less active you need less carbohydrates and fats than if you're very active