Monday 11 May 2026 – Morning
AS Level Biology A
H020/01 Breadth in biology
Time allowed: 1 hour 30 minutes
You can use:
*
• a scientific or graphical calculator
• a ruler (cm/mm)
* H 0 2 0 0 1 *
*
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
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 OCR 2026 [601/4261/3] Cambridge OCR is an exempt Charity
DC (SL/TC) 361119/3 Turn over
, 2
Section A
You should spend a maximum of 25 minutes on this section.
Write your answer to each question in the box provided.
1 The diagram shows an animal cell.
A
D
B
C
Which letter identifies the Golgi apparatus?
Your answer [1]
2 What is the function of the nucleolus?
A DNA replication
B mRNA synthesis
C Ribosome synthesis
D Transcription
Your answer [1]
Cambridge OCR 2026
, 3
3 Which structure do all eukaryotic cells and prokaryotic cells contain?
A Cell wall
B Cytoplasm
C Nuclear envelope
D Smooth endoplasmic reticulum
Your answer [1]
4 A teacher asks students to calculate the thickness of a plasma membrane seen under an
electron microscope.
Four of the students calculate different answers.
Which answer is the least accurate?
A 7 mm
B 7 nm
C 7 × 105 μm
D 7 × 10–2 m
Your answer [1]
5 Which of these molecules is a fibrous protein?
A Callose
B Haemoglobin
C Insulin
D Keratin
Your answer [1]
Cambridge OCR 2026 Turn over
AS Level Biology A
H020/01 Breadth in biology
Time allowed: 1 hour 30 minutes
You can use:
*
• a scientific or graphical calculator
• a ruler (cm/mm)
* H 0 2 0 0 1 *
*
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
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 OCR 2026 [601/4261/3] Cambridge OCR is an exempt Charity
DC (SL/TC) 361119/3 Turn over
, 2
Section A
You should spend a maximum of 25 minutes on this section.
Write your answer to each question in the box provided.
1 The diagram shows an animal cell.
A
D
B
C
Which letter identifies the Golgi apparatus?
Your answer [1]
2 What is the function of the nucleolus?
A DNA replication
B mRNA synthesis
C Ribosome synthesis
D Transcription
Your answer [1]
Cambridge OCR 2026
, 3
3 Which structure do all eukaryotic cells and prokaryotic cells contain?
A Cell wall
B Cytoplasm
C Nuclear envelope
D Smooth endoplasmic reticulum
Your answer [1]
4 A teacher asks students to calculate the thickness of a plasma membrane seen under an
electron microscope.
Four of the students calculate different answers.
Which answer is the least accurate?
A 7 mm
B 7 nm
C 7 × 105 μm
D 7 × 10–2 m
Your answer [1]
5 Which of these molecules is a fibrous protein?
A Callose
B Haemoglobin
C Insulin
D Keratin
Your answer [1]
Cambridge OCR 2026 Turn over
