Metabolism

Question 1

Define metabolism.

Answer 1

Chemical processes that occur within a living organism in order to maintain life

Question 2

Name the 4 main energy sources. Say where they are found and in what format they are most likely to be found.

Answer 2

Carbohydrates
Starch, fructose, sucrose, glucose, lactose - starchy foods & fruit

Proteins
Meat, dairy, pulses, fish

Alcohol
Ethanol mainly

Lipids
Triacylglycerols

Question 3

Where is the excess energy intake stored?

Answer 3

Triglycerides
Glycogen in liver & muscle
Protein

Question 4

What is the difference between anabolic and catabolic?

Answer 4

Anabolic - building molecules from smaller units

Catabolic - breaking larger molecules into smaller units

Question 5

What is BMR?

What are the units its measured in.

Answer 5

Basal metabolic rate
Minimal rate of energy expenditure at rest

1kcal/kg body mass/hour

Question 6

What increases BMR?

Answer 6

Muscle mass
Being female
Being younger
Living in a tropical environment
Fever/illness/injury