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6.1 Rate of reaction

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Question 42

A reaction in living cells can be catalysed by enzyme M or enzyme N. Scientists find that some collisions result in a reaction when enzyme N is present but do not result in a reaction at the same collision energy when enzyme M is present.

What does this show?

[1]
A

Enzyme N makes the reacting particles collide more often than enzyme M

B

Enzyme N provides a pathway with a lower activation energy than enzyme M

C

Enzyme N makes the overall energy change larger than enzyme M

D

Enzyme N increases the kinetic energy of the particles more than enzyme M

Markscheme

6.1 Rate of reaction Questions

  1. GCSE
  2. /Chemistry
  3. /6.1 Rate of reaction

127 exam-style questions on AQA GCSE Chemistry 6.1 Rate of reaction, covering 6.1.1a Calculating rates of reactions, 6.1.1b Gradient of a tangent as rate, 6.1.2 Factors which affect the rates of chemical reactions, 6.1.3 Collision theory and activation energy, and 6.1.4 Catalysts. Each one has a worked solution and a mark scheme showing where the marks go.

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