Monday 11 May 2026 – Morning
AS Level Biology A
H020/01 Breadth in biology
Time allowed: 1 hour 30 minutes
You can use:
GCE
*
• a scientific or graphical calculator
• a ruler (cm/mm)
Biology A
H020/01: Breadth in biology
* H 0 2 0 0 1 *
*
Please write clearly in black ink. Do not write in the barcodes. AS Level
Centre number Candidate number
Mark Scheme for June 2026
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• This document has 28 pages.
ADVICE
• Read each question carefully before you start your answer.
Cambridge 2026 [601/4261/3] Cambridge is an exempt Charity
DC (SL/TC) 361119/3 Turn over
Cambridge
, 2
Section A
You should spend a maximum of 25 minutes on this section.
Cambridge is a leading UK awarding body, providing a wide range of qualifications to
Write your answer to each question in the box provided.
meet the needs of candidates of all ages and abilities. Cambridge qualifications include
1 The diagram shows an animal cell. AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technicals, Functional Skills,
Key Skills, Entry Level qualifications, NVQs and vocational qualifications in areas such as IT,
business, languages, teaching/training, administration and secretarial skills.
It is also responsible for developing new specifications to meet national requirements and the
A
needs of students and teachers. Cambridge is a not-for-profit organisation; any surplus
made is invested back into the establishment to help towards the development of qualifications
and support, which keep pace with the changing needs of today’s society.
D
This mark scheme is published as an aid to teachers and students, to indicate the requirements
B of the examination. It shows the basis on which marks were awarded by examiners. It does not
indicate the details of the discussions which took place at an examiners’ meeting before marking
commenced.
All examiners are instructed that alternative correct answers and unexpected approaches in
C candidates’ scripts must be given marks that fairly reflect the relevant knowledge and skills
demonstrated.
Mark schemes should be read in conjunction with the published question papers and the report
Which letter identifies the Golgi apparatus? on the examination.
Your answer [1] Cambridge 2026
2 What is the function of the nucleolus?
A DNA replication
B mRNA synthesis
C Ribosome synthesis
D Transcription
Your answer [1]
Cambridge 2026
Cambridge
, H020/01 Mark Scheme June 2026
3
3 Which structure do all eukaryotic cells and prokaryotic cells contain? Marking Instructions
A Cell wall Preparation For Marking
1. RM Assessor
B Cytoplasm
• Access and complete the on-screen marking training packages: Examiner Training (RMA3).
C Nuclear envelope
• Read the mark scheme and question paper for this component or unit.
D Smooth endoplasmic reticulum
• The mark scheme and question paper are available in RM Assessor or on your Component Page if you use the Training Platform for
Your answer [1] standardisation.
• Log in to RM Assessor and mark the required number of practice scripts and the required number of standardisation scripts.
4 A teacher asks students to calculate the thickness of a plasma membrane seen under an
electron microscope. Marking
Four of the students calculate different answers. 2. General Guidance
Which answer is the least accurate? • Mark strictly to the mark scheme.
A 7 mm • Marks awarded must relate directly to the marking criteria.
B 7 nm
• If you are in any doubt about applying the mark scheme, consult your Team Leader by phone, email or via the RM Assessor messaging
C 7 × 105 μm system.
D 7 × 10–2 m • It is essential that you meet the RM Assessor 50% and 100% batch deadlines. For traditional marking this will be 40% and 100%. If you
experience problems, contact your Team Leader without delay.
Your answer [1]
• Always check the pages (and additional objects if present) at the end of the response in case any answers have been continued there. If the
candidate has continued an answer there, then add the annotation ‘SEEN’ to confirm that the work has been seen and mark any responses
5 Which of these molecules is a fibrous protein? using the annotations.
A Callose • The RM Assessor comments box is used by your Team Leader to explain the marking of the practice responses. Use these comments when
checking your practice responses. Do not use the comments box for any other reason.
B Haemoglobin
C Insulin 2
D Keratin
Your answer [1]
Cambridge 2026 Turn over
AS Level Biology A
H020/01 Breadth in biology
Time allowed: 1 hour 30 minutes
You can use:
GCE
*
• a scientific or graphical calculator
• a ruler (cm/mm)
Biology A
H020/01: Breadth in biology
* H 0 2 0 0 1 *
*
Please write clearly in black ink. Do not write in the barcodes. AS Level
Centre number Candidate number
Mark Scheme for June 2026
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• This document has 28 pages.
ADVICE
• Read each question carefully before you start your answer.
Cambridge 2026 [601/4261/3] Cambridge is an exempt Charity
DC (SL/TC) 361119/3 Turn over
Cambridge
, 2
Section A
You should spend a maximum of 25 minutes on this section.
Cambridge is a leading UK awarding body, providing a wide range of qualifications to
Write your answer to each question in the box provided.
meet the needs of candidates of all ages and abilities. Cambridge qualifications include
1 The diagram shows an animal cell. AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technicals, Functional Skills,
Key Skills, Entry Level qualifications, NVQs and vocational qualifications in areas such as IT,
business, languages, teaching/training, administration and secretarial skills.
It is also responsible for developing new specifications to meet national requirements and the
A
needs of students and teachers. Cambridge is a not-for-profit organisation; any surplus
made is invested back into the establishment to help towards the development of qualifications
and support, which keep pace with the changing needs of today’s society.
D
This mark scheme is published as an aid to teachers and students, to indicate the requirements
B of the examination. It shows the basis on which marks were awarded by examiners. It does not
indicate the details of the discussions which took place at an examiners’ meeting before marking
commenced.
All examiners are instructed that alternative correct answers and unexpected approaches in
C candidates’ scripts must be given marks that fairly reflect the relevant knowledge and skills
demonstrated.
Mark schemes should be read in conjunction with the published question papers and the report
Which letter identifies the Golgi apparatus? on the examination.
Your answer [1] Cambridge 2026
2 What is the function of the nucleolus?
A DNA replication
B mRNA synthesis
C Ribosome synthesis
D Transcription
Your answer [1]
Cambridge 2026
Cambridge
, H020/01 Mark Scheme June 2026
3
3 Which structure do all eukaryotic cells and prokaryotic cells contain? Marking Instructions
A Cell wall Preparation For Marking
1. RM Assessor
B Cytoplasm
• Access and complete the on-screen marking training packages: Examiner Training (RMA3).
C Nuclear envelope
• Read the mark scheme and question paper for this component or unit.
D Smooth endoplasmic reticulum
• The mark scheme and question paper are available in RM Assessor or on your Component Page if you use the Training Platform for
Your answer [1] standardisation.
• Log in to RM Assessor and mark the required number of practice scripts and the required number of standardisation scripts.
4 A teacher asks students to calculate the thickness of a plasma membrane seen under an
electron microscope. Marking
Four of the students calculate different answers. 2. General Guidance
Which answer is the least accurate? • Mark strictly to the mark scheme.
A 7 mm • Marks awarded must relate directly to the marking criteria.
B 7 nm
• If you are in any doubt about applying the mark scheme, consult your Team Leader by phone, email or via the RM Assessor messaging
C 7 × 105 μm system.
D 7 × 10–2 m • It is essential that you meet the RM Assessor 50% and 100% batch deadlines. For traditional marking this will be 40% and 100%. If you
experience problems, contact your Team Leader without delay.
Your answer [1]
• Always check the pages (and additional objects if present) at the end of the response in case any answers have been continued there. If the
candidate has continued an answer there, then add the annotation ‘SEEN’ to confirm that the work has been seen and mark any responses
5 Which of these molecules is a fibrous protein? using the annotations.
A Callose • The RM Assessor comments box is used by your Team Leader to explain the marking of the practice responses. Use these comments when
checking your practice responses. Do not use the comments box for any other reason.
B Haemoglobin
C Insulin 2
D Keratin
Your answer [1]
Cambridge 2026 Turn over
