Energy and nutrients

Question 1

BMR

Answer 1

Basal metabolic rate, the amount of energy we need to live.

Question 2

PAL

Answer 2

Physical activity level, amount of purposeful exercise we do.

Question 3

EAR

Answer 3

Estimated average requirements, the amount of energy on average for a group of people.

Question 4

Function of energy

Answer 4

We need energy for all the basic functions of the body, breathing, digesting and excretion. We also need it for our brains, muscles and heart to function.

Question 5

1g of fat provides us with _ kilocalories

Answer 5

9

Question 6

1g of carbohydrate provides us with _ kilocalories.

Answer 6

3.75

Question 7

1g of protein provides us with _ kilocalories.

Answer 7

4

Question 8

Body size

Answer 8

A large person uses up more energy in maintaining critical body processes than a smaller person. Women have lower metabolic rates than men, partly because they are lighter, but also because they have proportionally less body tissue and proportionally more body fat.

Question 9

Age

Answer 9

As individuals move through life, their energy requirements vary. During childhood and adolescence, energy requirements increase to meet the demands of growth and development. Ageing reduces energy needs as growth had stopped and levels of physical activity may decline.

Question 10

Gender

Answer 10

Makes often have a larger body size, increased muscle mass and a higher BMR than females, as adolescent and adult males require more energy to move.