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AQA A-LEVEL BIOLOGYPAPER 1
2020QUESTIONPAPER(VERIFIED
QUESTIONS 2020)
AQAALEVELBIOLOGYPAPER 12020 QP
*JU N2 0 7 4 0 2 1D0o w n1l o a d*e d by: ibrahim03naqvi |
7402/1
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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
Paper1
Thursday4June2020 Morning Timeallowed:2hours
Materials For iExaminer’s
For this paper you must have: iUse
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 8
at the end of this book. Write the question number against your 9
answer(s).
10
Show all your working.
Do all rough work in this book. Cross through any work you TOTAL
do not want to be marked.
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 91.
*JU N2 0 7 4 0 2 1D0o w n1l o a d*e d by: ibrahim03naqvi |
7402/1
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Guides
2
Do not write
outside the
Answer all questions in the spaces box
provided.
0 1 Figure 1 shows a cell from the lining of the ileum specialised for
absorption of products of digestion.
SGLT1 is a carrier protein found in the cell-surface membrane of this cell,
it transports glucose and sodium ions (Na+) into the cell.
Figure 1
0 1 . 1 The action of the carrier protein X in Figure 1 is linked to a membrane-
bound ATP hydrolase enzyme.
Explain the function of this ATP hydrolase.
[2 marks]
0 1 . 2 The movement of Na+ out of the cell allows the absorption of
glucose into the cell lining the ileum.
Explain how.
[2 marks]
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3
Do not write
outside the
box
0 1 i. i 3 Describe and explain two features you would expect to find in a cell
specialised for absorption.
[2 marks]
1
2
Question 1 continues on the next page
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Guides
AQA A-LEVEL BIOLOGYPAPER 1
2020QUESTIONPAPER(VERIFIED
QUESTIONS 2020)
AQAALEVELBIOLOGYPAPER 12020 QP
*JU N2 0 7 4 0 2 1D0o w n1l o a d*e d by: ibrahim03naqvi |
7402/1
, 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
Paper1
Thursday4June2020 Morning Timeallowed:2hours
Materials For iExaminer’s
For this paper you must have: iUse
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 8
at the end of this book. Write the question number against your 9
answer(s).
10
Show all your working.
Do all rough work in this book. Cross through any work you TOTAL
do not want to be marked.
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 91.
*JU N2 0 7 4 0 2 1D0o w n1l o a d*e d by: ibrahim03naqvi |
7402/1
, Stuvia.co.uk - The Marketplace for Revision Notes & Study
Guides
2
Do not write
outside the
Answer all questions in the spaces box
provided.
0 1 Figure 1 shows a cell from the lining of the ileum specialised for
absorption of products of digestion.
SGLT1 is a carrier protein found in the cell-surface membrane of this cell,
it transports glucose and sodium ions (Na+) into the cell.
Figure 1
0 1 . 1 The action of the carrier protein X in Figure 1 is linked to a membrane-
bound ATP hydrolase enzyme.
Explain the function of this ATP hydrolase.
[2 marks]
0 1 . 2 The movement of Na+ out of the cell allows the absorption of
glucose into the cell lining the ileum.
Explain how.
[2 marks]
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, Stuvia.co.uk - The Marketplace for Revision Notes & Study
Guides
3
Do not write
outside the
box
0 1 i. i 3 Describe and explain two features you would expect to find in a cell
specialised for absorption.
[2 marks]
1
2
Question 1 continues on the next page
Turn over ►
*03* Downloaded by: ibrahim03naqvi |
IB/M/
Jun20/7402/1
Distribution of this document is illegal
