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

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Question 47
F

Amylase is made in the salivary glands and works best at pH 7.

Amylase is swallowed and enters the stomach, where the pH is 2.

What happens to the amylase in the stomach?

[1]
A

It works faster because the acid helps it to break down starch.

B

It works at the same rate because pH does not affect enzymes.

C

Its active site changes shape, so it no longer breaks down starch.

D

It is broken down into glucose by the acid in the stomach.

Markscheme

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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