Enzyme Action Flashcards
1
Q
What can boiling in acid do to maltose molecules?
A
- Boiling in acid can provide right conditions for maltose molecules to collide with water.
2
Q
What is the name for the energy needed for a reaction to take place?
A
- The energy needed for a reaction to take place is named the activation energy.
3
Q
How do enzymes work?
A
Enzymes work by reducing the amount of activation energy required.
4
Q
What shape is the active site, and what is it suited for?
A
- Active site shaped to fit the substrate molecule. Active site is complementary to substrate.
5
Q
What is the lock and key mechanism?
A
- Described using ‘lock-and-key’ mechanism – substrate molecule is the key. Substrate held in place so reaction can go ahead.
6
Q
What is the induced-fit hypothesis?
A
- Enzyme slightly changes shape as substrate binds to active site – charges on amino acids in active site contribute to holding substrate in place – this is known as induced fit hypothesis.
7
Q
How is the substrate held in place and what does it produce?
A
- Substrate fits into place and is held by oppositely charged groups on substrate and enzyme forming the enzyme-substrate complex. A product is produced, known as the enzyme-product complex.
8
Q
Why doesn’t the product fit into the active site?
A
Product is a different shape, and so doesn’t fit into the active site.
