Exam (elaborations)
AQA A-level BIOLOGY Paper 2 QP JUNE 2024
- Course
- Institution
AQA A-level BIOLOGY Paper 2 QP JUNE 2024
[Show more]
Content preview
AQA A-level BIOLOGY Paper 2 QP JUNE 2024Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signatu re
I declare this is my own work.
A-level
BIOLOGY
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 Question Mark
a scientific calculator. 1
2
Instructions
Use black ink or black ball-point pen. 3
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 not write
outside the box around each page or on blank pages. 6
If you need extra space for your answer(s), use the lined pages at the end of 7
this book. Write the question number against your answer(s). 8
Show all your working.
9
Do all rough work in this book. Cross through any work you do not want
to be marked. 10
TOTAL
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 91.
*jun247402201*
IB/M/Jun24/G4006/E7 7402/2
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 Figure 1 shows a drawing of a neuromuscular junction.
Figure 1
0 1
.1 Name the parts labelled A to D.
[2 marks]
A
B
C
D
*02*
IB/M/Jun24/7402/2
, 3
Do not write
outside the
0 1 . 2 Following the release of acetylcholine into a neuromuscular junction, a muscle box
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 ►
*03*
IB/M/Jun24/7402/2
, 4
Do not write
outside the
0 2 . 1 box
Figure 2 shows part of a relaxed myofibril.
Figure 2
The myofibril represented in Figure 2 has 34 sarcomeres.
The length of every sarcomere is 2 µm
After contraction of this myofibril, the length of each sarcomere changed by 20%.
Use the information provided to calculate the length of the myofibril after contraction.
Give your answer in mm and in standard form.
Show your working.
[2 marks]
Answer mm
*04*
IB/M/Jun24/7402/2
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller papersbybree. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now