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1.2 What happens in cells (and what do cells need)?

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Question 12

Protease breaks protein down into amino acids.

A reaction mixture contains so much protein that adding more protein does not increase the rate of reaction. A scientist then adds more protease and the rate increases.

Why does adding more protease increase the rate?

[1]
A

Protease changes the pH of the mixture to its optimum.

B

Amino acids bind to the active sites and form more protein.

C

Protein molecules gain more kinetic energy and move faster.

D

More active sites are available for protein molecules to collide with.

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1.2 What happens in cells (and what do cells need)? Questions

  1. GCSE
  2. /Biology
  3. /1.2 What happens in cells (and what do cells need)?

184 exam-style questions on OCR GCSE Biology 1.2 What happens in cells (and what do cells need)?, covering 1.2.1 Structure of DNA, 1.2.2 Nucleotides and complementary bases, 1.2.3 Protein synthesis, 1.2.4 DNA structure and the proteins made, 1.2.5 Investigating enzymatic reactions, and 1.2.6 Mechanism of enzyme action. Each one has a worked solution and a mark scheme showing where the marks go.

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