AQA A Level Biology 2021 Paper 1
QP
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Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
BIOLOGY
Paper 1
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. 5
• You must answer the questions in the spaces provided. Do not write 6
outside the box around each page or on blank pages.
7
• 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). 8
• Show all your working. 9
• Do all rough work in this book. Cross through any work you do not want
10
to be marked.
TOTAL
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 91.
*JUN217402101*
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2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 . 1 Describe the induced-fit model of enzyme action and how an enzyme acts as a
catalyst.
[3 marks]
0 1 . 2 Scientists investigated the action of the enzyme ATP synthase. They made reaction
mixtures each containing:
• ATP synthase
• buffer (to control pH)
• substrates.
One of the substrates required in these reaction mixtures is inorganic phosphate (Pi).
Tick () one box to show which other substrate the scientists must add to the reaction
mixtures to produce ATP.
[1 mark]
Adenine
Adenosine diphosphate
Glucose
Ribose
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QP
written by
Markschemes
www.stuvia.com
Downloaded by: mustafabshaena |
Distribution of this document is illegal
, Stuvia.co.uk - The Marketplace for Revision Notes & Study Guides
If you want any recent locked edexcel, AQA or OCR papers or markschemes let
me know. I have the 2020 and 2021 ones - any subjects - any level. Can give
you for a small tip. Can pay through PayPal or card or crypto. If you know
anyone else who needs tell them to email or insta:
s_ihsan98. I have savemyexams notes too. If you want the exampro or aqa log
in, let me know too. The cheapest rates.
Recent or locked papers and markschemes edexcel, AQA, OCR [2020 and
2021] GCSE, AL, IGCSE, IAL available.
Quick response. Cheap. If no response in 3 hours contact another way.
Email:
Insta: s_ihsan98
Reddit: levitucus#6428 (actually discord not reddit)
Facebook: https://facebook.com/recentexampapers
TikTok: @gcsepapersalpapers
Accepted payment methods: credit/debit card, PayPal, crypto, gift card
For requests mention upfront examboard, level (GCSE or A Level etc), year,
which papers and whether markschemes too.
Average £3 per paper. Negotiable. For discounts - attach proof of referring or
sharing page/poster. No trading unless OCR or rare paper. AQA and exampro
logins also available. Post this poster to me back when requesting and get £1
off.
If there is any mistakes contact me
asap. I will respond positively.
Downloaded by: mustafabshaena |
Distribution of this document is illegal
, Stuvia.co.uk - The Marketplace for Revision Notes & Study Guides
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
BIOLOGY
Paper 1
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. 5
• You must answer the questions in the spaces provided. Do not write 6
outside the box around each page or on blank pages.
7
• 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). 8
• Show all your working. 9
• Do all rough work in this book. Cross through any work you do not want
10
to be marked.
TOTAL
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 91.
*JUN217402101*
Downloaded by: mustafabshaena |
IB/H/Jun21/E14
Distribution of this document is illegal
7402/1
, Stuvia.co.uk - The Marketplace for Revision Notes & Study Guides
2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 . 1 Describe the induced-fit model of enzyme action and how an enzyme acts as a
catalyst.
[3 marks]
0 1 . 2 Scientists investigated the action of the enzyme ATP synthase. They made reaction
mixtures each containing:
• ATP synthase
• buffer (to control pH)
• substrates.
One of the substrates required in these reaction mixtures is inorganic phosphate (Pi).
Tick () one box to show which other substrate the scientists must add to the reaction
mixtures to produce ATP.
[1 mark]
Adenine
Adenosine diphosphate
Glucose
Ribose
*02* Downloaded by: mustafabshaena |
IB/H/Jun21/7402/1
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