B1.3 Flashcards
What do carbohydrated foods provide to the body?
Energy to move and stay alive
What do protein foods provide to the body?
Growth and repair of body tissues
What do vitamin and mineral foods provide to the body?
For you to remain healthy
What is a metabolic rate?
The rate at which body uses energy
What are carbohydrates?
Some are polymers. Made from s,aller carbohydrate molecules like sugar. Different types of sugar eg lactose in milk.
Carbohydrase breaks down carbohydrates
What enzyme breaks down starch?
Amylase
What are proteins
Polymers. Formed from amino acids. 20 different amino acids.
In your body, protease enzymes break down proteins into amino acids .
What are lipids.
Fats and oils you eat. Good store of energy, some animals use it for insulation and buoyancy
In your body, lipase breaks down into lipids which then break down into fatty acids and glycerol.
Aerobic respiration equation.
C6H12O6 + 6O2——— 6CO2 +6H2O
What does ATP mean?
Adenosine triphosphate
It is used to synthesise bigger molecules from smaller ones to male new cell material, for movement and to stay warm.
Where Deos respiration occur?
Mitochondria of the cell
Respiration is therefore an exothermic reaction
What is anaerobic respiration?
Respiration without glucose
Glucose——- lactic acid
Not all glucose is broken down but lactic acid is produced
Why do we normally respire aerobically?
It produces more ATP molecules per glucose molecule than anaerobic respiration. It has a greater yield. U
