Exam (elaborations)
Aqa A-level BIOLOGY Paper 3 (7402/3) June 2022 Question Paper
Aqa A-level BIOLOGY Paper 3 (7402/3) June 2022 Question Paper
[Show more]
1 review
By: drewk2005 • 1 year ago
Content preview
AQaPlease write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signatu
ure
I declare this is my own work.
A-level
BIOLOGY
Paper 3
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
3
Use black ink or black ball-point pen.
Fill in the boxes at the top of this page. 4
Answer all questions in Section A. 5
Answer one question from Section B. 6
You must answer the questions in the spaces provided. Do not write
outside the box around each page or on blank pages. TOTAL
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. 7402/3
The maximum mark for this paper is 78.
*01*
IB/M/Jun22/E10
, 2
Do not write
outside the
There are no questions printed on this page box
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
*02*
IB/M/Jun22/7402/3
, 3
Do not write
outside the
Section A box
Answer all questions in this section.
You are advised to spend no more than 1 hour and 15 minutes on this section.
0 acids
Amino 1 are used to make proteins. Table 1 shows the R groups of six different amino acids.
Table 1
Amino acid R group Amino acid R group
Alanine CH3 Glutamic acid CH2CH2COOH
Asparagine CH2CONH2 Glycine H
Aspartic acid CH2COOH Serine CH2OH
0 1 .1 Use Table 1 to identify the three different amino acids used to make the polypeptide
shown in Figure 1.
[2 marks]
Figure 1
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun22/7402/3
, 4
Do not write
outside the
0 1 .2 Table 2 shows three statements and names of four biological molecules. box
Put a tick () in each box where the statement is true for the biological molecule.
[3
marks]
Table 2
Reverse
Statement DNA ATP Phospholipid
transcriptase
Contains peptide
bonds
Is formed using a
condensation reaction
Is a polymer
Figure 2 represents the structure of adult human haemoglobin.
Figure 2
*04*
IB/M/Jun22/7402/3
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 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 masterguider. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £11.89. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75759 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now