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GCSE Biology 2.3 Enzymes > End Of Unit Questions > Flashcards

Flashcards in End Of Unit Questions Deck (10)
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1

Where is amylase produced?

Salivary glands, the pancreas and the small intestine

2

What are the products of lipid digestion?

Fatty acids and glycerol

3

Which acid is produced by the stomach?

Hydrochloric acid

4

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

5

Why are proteases used in baby foods?

It pre digests protein so the baby can absorb it more easily

6

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

7

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

8

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

9

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

10

Which two factors can alter the shape of an enzyme?

Temperature and pH