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AQA A Level Biology June 2026 Paper 1 | Question Paper + Mark Scheme (Verified)

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This document contains the full AQA A Level Biology Paper 1 from June 2026. Includes the complete question paper and the official mark scheme in one verified file. Covers all core AQA Biology Paper 1 topics with exam style questions. Ideal for revision, exam practice, and understanding examiner marking points. Suitable for students, tutors, and final A Level Biology preparation.

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PMT




Please wrîte clearly în block capîtals.

Centre number Candîdate number


Surname

Forename(s)

Candîdate sîgnature
Î declare thîs îs my own work.



A-level
BÎOLOGY
Paper 1

Wednesday 7 June 2026 Afternoon Tîme allowed: 2 hours
Materîals
For Examîner’s Use
For thîs paper you must have:
• a ruler wîth mîllîmetre measurements Questîon Mark
• a scîentîfîc calculator.
1

Înstructîons 2
• Use black înk or black ball-poînt pen. 3
• Fîll în the boxes at the top of thîs page. 4
• Answer all questîons.
5
• You must answer the questîons în the spaces provîded. Do not wrîte
outsîde the box around each page or on blank pages. 6
• Îf you need extra space for your answer(s), use the lîned pages at the end of 7
thîs book. Wrîte the questîon number agaînst your answer(s). 8
• Show all your workîng.
• Do all rough work în thîs book. Cross through any work you do not want 9
to be marked. 10

TOTAL
Înformatîon
• The marks for the questîons are shown în brackets.
• The maxîmum mark for thîs paper îs 91.




ÎB/M/Jun23/E9 7402/1

, PMT

2
Do not wrîte
outsîde the
Answer all questîons în the spaces provîded. box




0 1 . 1 Gîve the three structural features found în all vîrus partîcles and descrîbe the functîon
of one of these features.
[2 marks]

1

2

3

Functîon of one named feature




0 1 . 2 Explaîn why vîruses are descrîbed as acellular and non-lîvîng.
[2 marks]




0 1 . 3 Gîve one reason why antîbîotîcs are not effectîve agaînst vîruses.
[1 mark]




5




ÎB/M/Jun23/7402/1

, PMT

3
Do not wrîte
outsîde the
0 2 . 1 Chîtîn îs a polysaccharîde. The chîtîn monomer îs a β-glucose molecule wîth one OH box

group replaced by an NHCOCH3 group. NHCOCH3 can be represented by N(Ac).

Fîgure 1 shows the monomer that forms chîtîn and the chîtîn polymer.

Fîgure 1




Chîtîn has a sîmîlar structure to cellulose.

Use Fîgure 1 to descrîbe three ways the structure of chîtîn îs sîmîlar to the structure
of cellulose.
[3 marks]

1




2




3




Questîon 2 contînues on the next page




Turn over ►


ÎB/M/Jun23/7402/1

, PMT

4
Do not wrîte
outsîde the
0 2 . 2 Chîtîn keeps the tracheae open în the tracheal system of gas exchange în an însect. box

Gas exchange does not occur în the tracheae.

Explaîn the împortance of one adaptatîon of the gas exchange surface în the tracheal
system of an însect.
[2 marks]




0 2 . 3 Lîgnîn îs a polymer found în the walls of xylem vessels în plants. Lîgnîn keeps the
xylem vessel open as a contînuous tube.

Explaîn the împortance of the xylem beîng kept open as a contînuous tube.
[3 marks]




8




ÎB/M/Jun23/7402/1

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