End Of Unit Questions Flashcards
Where is amylase produced?
Salivary glands, the pancreas and the small intestine
What are the products of lipid digestion?
Fatty acids and glycerol
Which acid is produced by the stomach?
Hydrochloric acid
What is the function of bile?
It neutralises the acid moving from the stomach to the small intestine because the enzymes in the small intestine work better in slightly alkaline conditions
Why are proteases used in baby foods?
It pre digests protein so the baby can absorb it more easily
Give two types of reaction controlled by enzymes in the cells.
- build large molecules from small ones
- changes one molecule into another
- breaks down large molecules into small ones
Why does increasing the temperature increase the rate of a reaction?
The molecules have more energy so they move faster and collide more often so it happens more in a given time
Give one advantage and one disadvantage of using enzymes in industry
Advantage: less energy needed for biological detergents as they denature above 40*C
Disadvantage: they may enter the waterways via the sewage system
Why do biological washing powders work more efficiently than non biological washing powders?
The enzymes speed up digestion of the stains from food, blood and grass plus lower temps have to be used for them too
Which two factors can alter the shape of an enzyme?
Temperature and pH
