Amylase is an enzyme which breaks down large carbohydrate molecules. Explain why it is unable to break down proteins.Include : reference to the lock and key hypothesis.
Answers
Answer:
Enzymes and digestion
Enzyme action
Enzymes are proteins that act as biological catalysts - this means they speed up reactions without being used up.
An enzyme works on the substrate, forming products.
An enzyme’s active site and its substrate are complementary in shape.
An enzyme will only work on one substrate - it is substrate specific.
Enzymes and substrates collide to form enzyme-substrate complexes.
The substrates are broken down (or in some cases built up).
The products are released.
The enzyme is free to act again.
This theory is known as the ‘lock and key model’.
It explains why each enzyme will only work on one substrate.
For example, the active site of amylase is only complementary to starch and will therefore only break down starch, not protein or fat.
Explanation:
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