Please write clearly in block capitals.
Centre number Candidate number
For Examiner’s Use
Surname
Question Mark
Forename(s) 1
2
Candidate signature
3
I declare this is my own work.
4
5
A-level BIOLOGY 6
7
Paper 2 8
9
10
Time allowed: 2 hours TOTAL
Materials
For this paper you must have: a
ruler with millimetre measurements
a scientific calculator.
[Type here]
,Instructions
• Use black ink or black ball-point pen.
• Fill in the boxes at the top of this page.
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write
outside the box around each page or on blank pages.
• If you need extra space for your answer(s), use the lined pages at the end
of this book. Write the question number against your answer(s).
• Show all your working.
• Do all rough work in this book. Cross through any work you do not want to
be marked.
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 91.
7402/2
IB/M/Jun24/E12
, Answer all questions in the spaces provided.
2
0 1 . 1 A student used chromatography to separate the different photosynthetic pigments in a Do not
chlorophyll solution. She had the following materials. write
outside the
box
Chromatography paper
A ruler and pencil
Suitable glassware
A solvent (solvent A)
2 cm3 of the chlorophyll solution
Describe how she could use these materials to separate the photosynthetic pigments
by chromatography.
[4 marks]
0 1 . 2 Using solvent A, the student separated five pigments. She then repeated her method
using a different solvent, B. Using solvent B, she separated six pigments.
Explain the difference between these results.
[2 marks]
IB/M/Jun24/7402/2
, 6
Centre number Candidate number
For Examiner’s Use
Surname
Question Mark
Forename(s) 1
2
Candidate signature
3
I declare this is my own work.
4
5
A-level BIOLOGY 6
7
Paper 2 8
9
10
Time allowed: 2 hours TOTAL
Materials
For this paper you must have: a
ruler with millimetre measurements
a scientific calculator.
[Type here]
,Instructions
• Use black ink or black ball-point pen.
• Fill in the boxes at the top of this page.
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write
outside the box around each page or on blank pages.
• If you need extra space for your answer(s), use the lined pages at the end
of this book. Write the question number against your answer(s).
• Show all your working.
• Do all rough work in this book. Cross through any work you do not want to
be marked.
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 91.
7402/2
IB/M/Jun24/E12
, Answer all questions in the spaces provided.
2
0 1 . 1 A student used chromatography to separate the different photosynthetic pigments in a Do not
chlorophyll solution. She had the following materials. write
outside the
box
Chromatography paper
A ruler and pencil
Suitable glassware
A solvent (solvent A)
2 cm3 of the chlorophyll solution
Describe how she could use these materials to separate the photosynthetic pigments
by chromatography.
[4 marks]
0 1 . 2 Using solvent A, the student separated five pigments. She then repeated her method
using a different solvent, B. Using solvent B, she separated six pigments.
Explain the difference between these results.
[2 marks]
IB/M/Jun24/7402/2
, 6
