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

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Question 33
H

A DNA molecule contains 5000 base pairs. 30% of the bases are adenine (A).

How many guanine (G) bases are in the molecule?

[1]
A

100010001000

B

200020002000

C

300030003000

D

400040004000

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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