3.2 Factors Affecting Enzyme Action Flashcards Preview

GCSE Biology 2.3 Enzymes > 3.2 Factors Affecting Enzyme Action > Flashcards

Flashcards in 3.2 Factors Affecting Enzyme Action Deck (9)
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1

What temperature do reactions work fastest in?

Warm temps up to 40*

2

Why do reactions work faster in warmer conditions?

The molecules have more energy so they move around faster and collide more often

3

Why does the shape of the active site change when the enzyme gets too hot?

The proteins unravel so we say the enzyme has been denatured

4

What is the average working temp for enzymes?

37*C

5

How does the enzyme hold its shape?

Forces from different parts of the protein molecules hold the folded chains in place

6

What factor affects the forces that hold the chains together?

Concentration/pH

7

Why are enzymes so important?

None of the reactions in our body would happen fast enough without them to keep us alive

8

Why is it dangerous when our body temp gets too high when we are ill?

Once your body temp reaches 41*C your enzymes will denature and your body reactions won't happen fast enough so you'll die

9

Name 3 things that affect the rate of chemical reactions in the body (not enzymes)

•temperature
•surface area
•concentration