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

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Question 9

A laboratory technician records four base pairs in a section of DNA from a trout.

PositionBase on strand 1Aligned base on strand 2
1A\text{A}AT\text{T}T
2C\text{C}CG\text{G}G
3T\text{T}TC\text{C}C
4G\text{G}GC\text{C}C

What base pair has been recorded incorrectly?

[1]
A

The pair at position 1: A\text{A}A with T\text{T}T

B

The pair at position 4: G\text{G}G with C\text{C}C

C

The pair at position 3: T\text{T}T with C\text{C}C

D

The pair at position 2: C\text{C}C with G\text{G}G

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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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