Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Edexcel Level 3 GCE
Thursday 21 May 2026
Mark Scheme
Morning (Time: 1 hour 30 minutes) Paper
8BN0/02
Biology A (Salters Nuffield)
reference
(Results)
Advanced Subsidiary
PAPER 2: Development, Plants and the Environment
You must have: Total Marks
Summer 2026
Calculator, HB pencil, ruler
Instructions
• Use black ink or ball‑point pen. Edexcel Advanced Subsidiary in Biology A
• centrethe
Fill in boxes at the top of this page with your name,
number and candidate number. 8BN0/02
• Answer all questions.
• where appropriate.
Show your working in any calculation questions and include units in your answer
• Answer the questions in the spaces provided
– there may be more space than you need.
Information
• The total mark for this paper is 80.
• – usemarks
The for each question are shown in brackets
this as a guide as to how much time to spend on each question.
• You may use a scientific calculator.
• structure yourmarked
In questions with an asterisk (*), marks will be awarded for your ability to
answer logically showing how the points that you make are related
or follow on from each other where appropriate.
Advice
• Read each question carefully before you start to answer it.
• Try to answer every question.
• Check your answers if you have time at the end. Turn over
P79079A
P:1/1/1/1/1/
Education Ltd. *P79079A0128*
, Answer ALL questions. Edexcel and BTEC Qualifications
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
Edexcel and BTEC qualifications are awarded by the UK’s
1 All living organisms are made of cells. largest awarding body. We provide a wide range of qualifications
including academic, vocational, occupational and specific
(a) Some cells produce extracellular enzymes.
programmes for employers. For further information visit our
Extracellular enzymes are needed for processes outside of the cell, such qualifications websites at or .
as digestion.
Alternatively, you can get in touch with us using the details on our
The photograph shows a cell that releases digestive enzymes into the stomach. contact us page at
structure 1
helping people progress, everywhere
vesicle
containing
enzymes aspires to be the world’s leading learning company. Our aim is to help
everyone progress in their lives through education. We believe in every kind of
learning, for all kinds of people, wherever they are in the world. We’ve been
involved in education for over 150 years, and by working across 70 countries, in
100 languages, we have built an international reputation for our commitment to
high standards and raising achievement through innovation in education. Find out
more about how we can help you and your students at:
structure 2
(Source: ThePrint Collector/Alamy Stock Photo)
(i) Which of the following correctly identifies the structures labelled 1 and 2 on
this photograph?
(1)
Structure 1 Structure 2
A Golgi apparatus chloroplast
B Golgi apparatus mitochondrion Summer 2026
C Question Paper Log Number P79080A
rough endoplasmic reticulum chloroplast
Publication Code 8BI0_01_2606_MS
D rough endoplasmic reticulum mitochondrion All the material in this publication is
2
*P79079A0228*
, (ii) Enzymes are proteins. These proteins are produced on ribosomes in the cell. General Marking Guidance
• All candidates must receive the same treatment. Examiners must mark the
Describe how the protein molecules are modified and transported from the
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
ribosomes to the vesicle labelled on the photograph. first candidate in exactly the same way as they mark the last.
(4) • Mark schemes should be applied positively. Candidates must be rewarded
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
for what they have shown they can do rather than penalised for omissions.
• Examiners should mark according to the mark scheme not according to their
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
perception of where the grade boundaries may lie.
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • There is no ceiling on achievement. All marks on the mark scheme should be
used appropriately.
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
• All the marks on the mark scheme are designed to be awarded. Examiners
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . should always award full marks if deserved, i.e. if the answer matches the
mark scheme. Examiners should also be prepared to award zero marks if the
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
candidate’s response is not worthy of credit according to the mark scheme.
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
• Where some judgement is required, mark schemes will provide the
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
principles by which marks will be awarded and exemplification may be
limited.
• When examiners are in doubt regarding the application of the mark scheme
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . to a candidate’s response, the team leader must be consulted.
• Crossed out work should be marked UNLESS the candidate has replaced it
with an alternative response.
3
*P79079A0328* Turn over
Candidate surname Other names
Centre Number Candidate Number
Edexcel Level 3 GCE
Thursday 21 May 2026
Mark Scheme
Morning (Time: 1 hour 30 minutes) Paper
8BN0/02
Biology A (Salters Nuffield)
reference
(Results)
Advanced Subsidiary
PAPER 2: Development, Plants and the Environment
You must have: Total Marks
Summer 2026
Calculator, HB pencil, ruler
Instructions
• Use black ink or ball‑point pen. Edexcel Advanced Subsidiary in Biology A
• centrethe
Fill in boxes at the top of this page with your name,
number and candidate number. 8BN0/02
• Answer all questions.
• where appropriate.
Show your working in any calculation questions and include units in your answer
• Answer the questions in the spaces provided
– there may be more space than you need.
Information
• The total mark for this paper is 80.
• – usemarks
The for each question are shown in brackets
this as a guide as to how much time to spend on each question.
• You may use a scientific calculator.
• structure yourmarked
In questions with an asterisk (*), marks will be awarded for your ability to
answer logically showing how the points that you make are related
or follow on from each other where appropriate.
Advice
• Read each question carefully before you start to answer it.
• Try to answer every question.
• Check your answers if you have time at the end. Turn over
P79079A
P:1/1/1/1/1/
Education Ltd. *P79079A0128*
, Answer ALL questions. Edexcel and BTEC Qualifications
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
Edexcel and BTEC qualifications are awarded by the UK’s
1 All living organisms are made of cells. largest awarding body. We provide a wide range of qualifications
including academic, vocational, occupational and specific
(a) Some cells produce extracellular enzymes.
programmes for employers. For further information visit our
Extracellular enzymes are needed for processes outside of the cell, such qualifications websites at or .
as digestion.
Alternatively, you can get in touch with us using the details on our
The photograph shows a cell that releases digestive enzymes into the stomach. contact us page at
structure 1
helping people progress, everywhere
vesicle
containing
enzymes aspires to be the world’s leading learning company. Our aim is to help
everyone progress in their lives through education. We believe in every kind of
learning, for all kinds of people, wherever they are in the world. We’ve been
involved in education for over 150 years, and by working across 70 countries, in
100 languages, we have built an international reputation for our commitment to
high standards and raising achievement through innovation in education. Find out
more about how we can help you and your students at:
structure 2
(Source: ThePrint Collector/Alamy Stock Photo)
(i) Which of the following correctly identifies the structures labelled 1 and 2 on
this photograph?
(1)
Structure 1 Structure 2
A Golgi apparatus chloroplast
B Golgi apparatus mitochondrion Summer 2026
C Question Paper Log Number P79080A
rough endoplasmic reticulum chloroplast
Publication Code 8BI0_01_2606_MS
D rough endoplasmic reticulum mitochondrion All the material in this publication is
2
*P79079A0228*
, (ii) Enzymes are proteins. These proteins are produced on ribosomes in the cell. General Marking Guidance
• All candidates must receive the same treatment. Examiners must mark the
Describe how the protein molecules are modified and transported from the
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
ribosomes to the vesicle labelled on the photograph. first candidate in exactly the same way as they mark the last.
(4) • Mark schemes should be applied positively. Candidates must be rewarded
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
for what they have shown they can do rather than penalised for omissions.
• Examiners should mark according to the mark scheme not according to their
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
perception of where the grade boundaries may lie.
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • There is no ceiling on achievement. All marks on the mark scheme should be
used appropriately.
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
• All the marks on the mark scheme are designed to be awarded. Examiners
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . should always award full marks if deserved, i.e. if the answer matches the
mark scheme. Examiners should also be prepared to award zero marks if the
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
candidate’s response is not worthy of credit according to the mark scheme.
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
• Where some judgement is required, mark schemes will provide the
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
principles by which marks will be awarded and exemplification may be
limited.
• When examiners are in doubt regarding the application of the mark scheme
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . to a candidate’s response, the team leader must be consulted.
• Crossed out work should be marked UNLESS the candidate has replaced it
with an alternative response.
3
*P79079A0328* Turn over
