Please write clearly in block capitals.
A-level
Centre Candidate
BIOLOGY
number number
Paper 1
Surname
Forename(s)
Candidate re Time allowed: 2 hours
signatu
Materials
For this paper you must have: For Examiner’s Use
a ruler with millimetre measurements
Questio Mark
a scientific calculator. n
1
Instructions
2
Use black ink or black ball-point pen.
Fill in the boxes at the top of this page. 3
Answer all questions. 4
You must answer the questions in the spaces provided. Do 5
not write outside the box around each page or on blank
6
pages.
If you need extra space for your answer(s), use the lined pages at 7
the end of this book. Write the question number against your 8
answer(s). 9
Show all your working.
Do all rough work in this book. Cross through any work you do TOTAL
not want to be marked.
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 91.
*jun227402101*
IB/M/Jun22/ 7402/1
E12
, 2
Do not
write
There are no questions printed on this page box
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
*02
IB/M/
*
, 3
Do not
Answer all questions in the spaces write
box
provided.
0 1 .1 Describe the structure and function of the nucleus.
[4 marks]
Question 1 continues on the next page
Turn over ►
*03
IB/M/
*
, 4
Do not
write
box
0 1 .2 Name the main polymer that forms the following cell walls.
[1 mark]
Plant cell wall
Fungal cell wall
Scientists investigated the effect of the number of fungal species in
soil on the diversity of plant species.
Table 1 shows their raw data for soil containing 14 fungal species.
Table 1
Plant species Total shoot biomass / g m–2
Poa compressa 2
Achillea millefolium 4
Aster cordifolius 5
Aster novae-angliae 7
Chrysanthemum leucanthemum 15
Daucus carota 36
Fragaria virginiana 51
0 1 .3 Suggest one reason the scientists used biomass instead of the number of
individuals of each plant species when collecting data to measure
diversity.
[1 mark]
*04
IB/M/
*
A-level
Centre Candidate
BIOLOGY
number number
Paper 1
Surname
Forename(s)
Candidate re Time allowed: 2 hours
signatu
Materials
For this paper you must have: For Examiner’s Use
a ruler with millimetre measurements
Questio Mark
a scientific calculator. n
1
Instructions
2
Use black ink or black ball-point pen.
Fill in the boxes at the top of this page. 3
Answer all questions. 4
You must answer the questions in the spaces provided. Do 5
not write outside the box around each page or on blank
6
pages.
If you need extra space for your answer(s), use the lined pages at 7
the end of this book. Write the question number against your 8
answer(s). 9
Show all your working.
Do all rough work in this book. Cross through any work you do TOTAL
not want to be marked.
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 91.
*jun227402101*
IB/M/Jun22/ 7402/1
E12
, 2
Do not
write
There are no questions printed on this page box
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
*02
IB/M/
*
, 3
Do not
Answer all questions in the spaces write
box
provided.
0 1 .1 Describe the structure and function of the nucleus.
[4 marks]
Question 1 continues on the next page
Turn over ►
*03
IB/M/
*
, 4
Do not
write
box
0 1 .2 Name the main polymer that forms the following cell walls.
[1 mark]
Plant cell wall
Fungal cell wall
Scientists investigated the effect of the number of fungal species in
soil on the diversity of plant species.
Table 1 shows their raw data for soil containing 14 fungal species.
Table 1
Plant species Total shoot biomass / g m–2
Poa compressa 2
Achillea millefolium 4
Aster cordifolius 5
Aster novae-angliae 7
Chrysanthemum leucanthemum 15
Daucus carota 36
Fragaria virginiana 51
0 1 .3 Suggest one reason the scientists used biomass instead of the number of
individuals of each plant species when collecting data to measure
diversity.
[1 mark]
*04
IB/M/
*
