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3.2 DNA and protein synthesis

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Question 17
F

A student investigates the effect of crushing time on the mass of DNA collected from fruit. The table shows the proposed methods.

Table

MethodMass of fruit / g\text{g}gCrushing time / s\text{s}sVolume of detergent solution / cm3\text{cm}^3cm3
P103020
Q106020
R206020
S106040

All other conditions are kept the same. Which pair provides a valid comparison?

[1]
A

methods P and R

B

methods P and S

C

methods Q and R

D

methods P and Q

Markscheme

3.2 DNA and protein synthesis Questions

  1. GCSE
  2. /Biology
  3. /3.2 DNA and protein synthesis

44 exam-style questions on Edexcel GCSE Biology 3.2 DNA and protein synthesis, covering 3.2.1 DNA structure as a polymer, 3.2.2 Genome and gene definitions, 3.2.3 Extracting DNA from fruit, 3.2.4 Base order determines protein shape, 3.2.5 Stages of protein synthesis, 3.2.6 Non-coding DNA variants affecting phenotype, and 3.2.7 Coding DNA variants affecting phenotype. Each one has a worked solution and a mark scheme showing where the marks go.

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