Diet and Metabolic Rate Flashcards Preview

Biology: 1 > Diet and Metabolic Rate > Flashcards

Flashcards in Diet and Metabolic Rate Deck (18):
1

For good health, what must your diet provide?

The energy you need (but no more)

2

Give the role of carbohydrates

Releasing energy

3

Give the roles of fats

1. Keeping warm

2. Releasing energy

4

Give the roles of proteins

1. Growth

2. Cell repair

3. Cell replacement

5

Give the role of fibre

Allows the muscles in our intestines to move food through out system by peristalsis

6

Why do we need small amounts of various vitamins and mineral ions?

(4 ish)

For healthy

1. Skin

2. Bones

3. Blood

and everything else

7

Define 'metabolism'

The chemical reactions in the body that keep you alive

8

Why do our bodies need energy?

To fuel our metabolisms

9

Define 'metabolic rate'

The speed at which the chemical reactions in your body that keep you alive happen

10

Do resting metabolic rates differ from person to person?

Yes - there are slight variations

11

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

12

Are you more likely to have a higher metabolic rate if you are bigger, or smaller?

Why?

Bigger

The bigger you are, the more cells you have, so the more energy your body needs to be supplied with

13

Does your sex affect your metabolic rate?

Why?

Yes

Natal men tend to be slightly bigger than natal women, and have a larger proportion of muscle, resulting in a higher metabolic rate.

14

Why can regular exercise boost your resting metabolic rate?

Because it builds muscle

15

Name 5 factors that affect your resting metabolic rate

1. Your sex

2. Other genetic factors

3. Amount of exercise you do

4. Diet

5. How big you are

16

What happens to your metabolic rate when you exercise?

Why?

It increases and stays high for some time after

Because your body needs more energy

17

Why do builders require more energy per day than office workers?

Because they have more active jobs so their metabolic rates are higher

18

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