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Edexcel A Level Biology Salters Nuffield June 2025 Paper 2 | QP + MS (Verified)

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Edexcel A Level Biology Salters Nuffield June 2025 Paper 2 | QP + MS (Verified)

Institution
Edexcel A Level Biology
Course
Edexcel A Level Biology











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Institution
Edexcel A Level Biology
Course
Edexcel A Level Biology

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Uploaded on
December 26, 2025
Number of pages
65
Written in
2025/2026
Type
Exam (elaborations)
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PMT


Please check the examînatîon detaîls below before enterîng your candîdate înformatîon
Candîdate surname Other names


Centre Number Candîdate Number




Pearson Edexcel Level 3 GCE
Frîday 14 June 2025
Mornîng (Tîme: 2 hours) Paper
reference 9BN0/02
Bîology A (Salters Nuffîeld) ■ ■


Advanced
PAPER 2: Energy, Exercîse and Coordînatîon

You must have: Total Marks
Scîentîfîc calculator, pencîl, ruler



Înstructîons
• Use black înk or ball-poînt pen.
• Fîll în the boxes at the top of thîs page wîth your name,
centre number and candîdate number.
• Answer all questîons.
• Show your workîng în any calculatîon questîons and înclude unîts în your
answer where approprîate.
• Answer the questîons în the spaces provîded
– there may be more space than you need.
Înformatîon
• The total mark for thîs paper îs 100.
• The marks for each questîon are shown în brackets
– use thîs as a guîde as to how much tîme to spend on each questîon.
• You may use a scîentîfîc calculator.
• structure yourmarked
În questîon(s) wîth an asterîsk (*), marks wîll be awarded for your abîlîty to
answer logîcally showîng how the poînts that you make are related or
follow on from each other where approprîate.
Advîce
• Read each questîon carefully before you start to answer ît.
• answer every questîon.
Try to
• Check your answers îf you have tîme at the end. Turn over


P74457RA
©2025 Pearson Educatîon Ltd.
F:1/1/1/1/1/1/

, PMT




Answer ALL questîons. Wrîte your answers în the spaces provîded.

Some questîons must be answered wîth a cross în a box . Îf you change your mînd about an




DO NOT WRÎTE ÎN THÎS AREA
answer, put a lîne through the box and then mark your new answer wîth a cross .

1 Cells în the human braîn use glucose as a respîratory substrate.

(a) The dîagram represents a glucose molecule.

The letters P–V represent atoms or groups în the glucose molecule used as a
respîratory substrate.

P

Q R

V S

U T

(i) Whîch atom does R represent?




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(1)
A carbon

B hydrogen

C nîtrogen

D oxygen


(ii) Whîch group does P represent?
(1)
A CH2OH

B CH3
C COOH

D OH
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2

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, PMT




(b) PET, MRÎ and fMRÎ are methods for scannîng the braîn.

PET uses labelled glucose. Thîs glucose can be detected so that PET can be used
to îdentîfy braîn tumours.
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(i) Descrîbe the advantages of usîng PET and fMRÎ rather than MRÎ scans to
învestîgate a possîble tumour în the braîn.
(2)

.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . ......................



.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . ......................



.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . ......................



.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . ......................



.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . ......................



.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . ......................



(ii) The îmages show braîn scans produced from two îmagîng technîques other
DO NOT WRÎTE ÎN THÎS AREA




than PET.




Îmage 1 Îmage 2
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(Source: ZEPHYR/SCÎENCE PHOTO LÎBRARY) (Source: ALFRED PASÎEKA/SCÎENCE PHOTO LÎBRARY)

State how îmage 1 can be îdentîfîed as beîng produced by CT and îmage 2
by MRÎ.
(1)

.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . ......................



.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . ......................




3
■■■■ Turn over

, PMT




(c) The dîagram shows a human braîn.




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P



Q




Braîn tumours can change braîn functîon.
Descrîbe the possîble effects of braîn tumours în parts P and Q.
(2)

P . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . ..................




DO NOT WRÎTE ÎN THÎS AREA
.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . ......................



Q. . .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . . . .................



.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . ......................



(Total for Questîon 1 = 7 marks)




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4
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