Energy

Question 1

What is energy

Answer 1

The body’s ability to do work

Gets the energy it needs through food by a process called metabolism

Question 2

What is three functions of energy

Answer 2

Physical activities such as running swimming and standing

Heat generation to maintain the body at a temperature of 37 degrees

Functioning of internal organs eg heart

Question 3

What is the energy value for
Protein
Carbohydrates
Fats

Answer 3

Protein
1g = 4 kcal

Carbohydrates
1g= 4kcal

Fat
1g = 9kcal

Question 4

What is bmr

Answer 4

Minimum amount of energy required to maintain body functions when at rest
It is measure when a person is warm
Complete physical and mental rest

Question 5

What is metabolism

Answer 5

Process through which the body converts the food we eat into energy
Used to maintain bodily functions such as breathing

Question 6

Three factors that determine energy requirements

Answer 6

Size
Generally the larger the body the higher energy requirements as more energy is needed to maintain it

Health status
During times of illness convalescent require less energy due to a lack of physical exercise

Activity level
The more active a person is the more needy that it require eg a runner requires more energy than a painter

Question 7

What is energy balance

Answer 7

All energy intake should balance energy output to maintain weight

If energy intake is greater than energy output people gain weight as exceeds energy is converted to fat

If energy output exceeds energy intake people lose weight