A level
AQA
Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate re
signatu
A-level
BIOLOG
Y
Paper 2
Friday 14 June 2024 Morning Time allowed: 2 hours
Materials
For Examiner’s Use
For this paper you must have:
a ruler with millimetre measurements Questio Mark
a scientific calculator. n
1
Instructions 2
Use black ink or black ball-point pen. 3
Fill in the boxes at the top of this page.
4
Answer all questions.
You must answer the questions in the spaces provided. Do 5
not write outside the box around each page or on blank 6
pages. 7
If you need extra space for your answer(s), use the lined pages at
8
the end of this book. Write the question number against your
answer(s). 9
Show all your working. 10
Do all rough work in this book. Cross through any work you do
not want to be marked. TOTAL
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 91.
,A level
, Answer all questions in the spaces box
provided.
0 11 shows a drawing of a neuromuscular junction.
Figure
Figure 1
0 1
.1 Name the parts labelled A to D.
[2 marks]
A
B
C
D
, 0 1 .2 Following the release of acetylcholine into a neuromuscular box
junction, a muscle contraction occurs.
Describe the sequence of events, following the release of acetylcholine,
that leads to stimulation of this contraction.
Do not include in your answer the events following the release of calcium
ions in the myofibril.
[4 marks]
0 1 .3 Inhibitory synapses cause hyperpolarisation in postsynaptic neurones.
Explain how this inhibits synaptic transmission.
[2 marks]
8
Turn over ►
AQA
Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate re
signatu
A-level
BIOLOG
Y
Paper 2
Friday 14 June 2024 Morning Time allowed: 2 hours
Materials
For Examiner’s Use
For this paper you must have:
a ruler with millimetre measurements Questio Mark
a scientific calculator. n
1
Instructions 2
Use black ink or black ball-point pen. 3
Fill in the boxes at the top of this page.
4
Answer all questions.
You must answer the questions in the spaces provided. Do 5
not write outside the box around each page or on blank 6
pages. 7
If you need extra space for your answer(s), use the lined pages at
8
the end of this book. Write the question number against your
answer(s). 9
Show all your working. 10
Do all rough work in this book. Cross through any work you do
not want to be marked. TOTAL
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 91.
,A level
, Answer all questions in the spaces box
provided.
0 11 shows a drawing of a neuromuscular junction.
Figure
Figure 1
0 1
.1 Name the parts labelled A to D.
[2 marks]
A
B
C
D
, 0 1 .2 Following the release of acetylcholine into a neuromuscular box
junction, a muscle contraction occurs.
Describe the sequence of events, following the release of acetylcholine,
that leads to stimulation of this contraction.
Do not include in your answer the events following the release of calcium
ions in the myofibril.
[4 marks]
0 1 .3 Inhibitory synapses cause hyperpolarisation in postsynaptic neurones.
Explain how this inhibits synaptic transmission.
[2 marks]
8
Turn over ►
