Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate ure
signat
AS
BIOLO
GY
Paper 1
May 2024 Morning Time allowed: 1 hour 30 minutes
Materials For Examiner’s Use
For this paper you must have:
a ruler with millimetre measurements Question Mark
a scientific calculator. 1
2
Instructions
3
Use black ink or black ball-point pen.
Fill in the boxes at the top of this page. 4
Answer all questions. 5
You must answer the questions in the spaces provided. Do 6
not write outside the box around each page or on blank
7
pages.
If you need extra space for your answer(s), use the lined pages at the end of
8
this book. Write the question number against your answer(s). 9
Show all your working.
TOTAL
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 75.
,7401/1
, 2
Do not write
outside the
Answer all questions in the spaces box
provided.
0 1 . 1 Figure 1 shows a diagram of the human gas exchange
system.
Figure 1
Structure B is muscle. The volume of the thorax is increased when
structure B
contracts.
Name the structures labelled A and B.
[2 marks]
A
B
IB/M/
Jun24/7401/1
, 3
Do not write
outside the
0 1 . Figure 2 is a diagram of an alveolus and a blood vessel associated with the box
2 alveolus.
The direction of the movement of substances is shown by the arrows
labelled C, D, E, F and G.
Figure 2
Complete Table 1 by writing the correct letter, C, D, E, F or G, in the box
next to each statement. You may use each letter once, more than once or
not at all.
[2 marks]
Table 1
Box Statement
represents the diffusion of oxygen
represents the transport of a gas mixture
represents blood moving at the highest
pressure
IB/M/
Jun24/7401/1
Centre Candidate
number number
Surname
Forename(s)
Candidate ure
signat
AS
BIOLO
GY
Paper 1
May 2024 Morning Time allowed: 1 hour 30 minutes
Materials For Examiner’s Use
For this paper you must have:
a ruler with millimetre measurements Question Mark
a scientific calculator. 1
2
Instructions
3
Use black ink or black ball-point pen.
Fill in the boxes at the top of this page. 4
Answer all questions. 5
You must answer the questions in the spaces provided. Do 6
not write outside the box around each page or on blank
7
pages.
If you need extra space for your answer(s), use the lined pages at the end of
8
this book. Write the question number against your answer(s). 9
Show all your working.
TOTAL
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 75.
,7401/1
, 2
Do not write
outside the
Answer all questions in the spaces box
provided.
0 1 . 1 Figure 1 shows a diagram of the human gas exchange
system.
Figure 1
Structure B is muscle. The volume of the thorax is increased when
structure B
contracts.
Name the structures labelled A and B.
[2 marks]
A
B
IB/M/
Jun24/7401/1
, 3
Do not write
outside the
0 1 . Figure 2 is a diagram of an alveolus and a blood vessel associated with the box
2 alveolus.
The direction of the movement of substances is shown by the arrows
labelled C, D, E, F and G.
Figure 2
Complete Table 1 by writing the correct letter, C, D, E, F or G, in the box
next to each statement. You may use each letter once, more than once or
not at all.
[2 marks]
Table 1
Box Statement
represents the diffusion of oxygen
represents the transport of a gas mixture
represents blood moving at the highest
pressure
IB/M/
Jun24/7401/1
