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2024 Pearson Edexcel Advanced Level In Biology A Salters Nuffield (9BN0) Paper 02: Energy, Exercise and Coordination QUESTION PAPER AND MARKING SCHEME (MERGED)

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2024 Pearson Edexcel Advanced Level In Biology A Salters Nuffield (9BN0) Paper 02: Energy, Exercise and Coordination QUESTION PAPER AND MARKING SCHEME (MERGED)

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Please check the examination details below before entering your candidate information
Candidate surname Other names


Centre Number Candidate Number




Pearson Edexcel Level 3 GCE
Friday 14 June 2024
Paper
Morning (Time: 2 hours)
reference 9BN0/02
Biology A (Salters Nuffield)
Advanced



Total Marks




Instructions
Use black ink or ball-point pen.
Fill in the boxes at the top of this page with your name, centre
number and candidate number.


• Show your working in any calculation questions and include units in your answer
where appropriate.
Answer the questions in the spaces provided –
there may be more space than you need.
Information
The total mark for this paper is 100.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question. You may
use a scientific calculator.
In question(s) marked with an asterisk (*), marks will be awarded for your ability to
structure your 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

, Answer ALL questions. Write your answers in the spaces provided.

Some questions must be answered with a cross in a box . If you change your mind about an
answer, put a line through the box and then mark your new answer with a cross .

1 Cells in the human brain use glucose as a respiratory substrate.
(a) The diagram represents a glucose molecule.
The letters P–V represent atoms or groups in the glucose molecule used as a
respiratory substrate.

P

Q R

V S

U T

(i) Which atom does R represent?
(1)
A carbon

B hydrogen
C nitrogen
D oxygen


(ii) Which group does P represent?
(1)

A CH2OH

B CH3
C COOH

D OH




2 ■■■■

, (b) PET, MRI and fMRI are methods for scanning the brain.
PET uses labelled glucose. This glucose can be detected so that PET can be used to identify
brain tumours.

(i) Describe the advantages of using PET and fMRI rather than MRI scans to
investigate a possible tumour in the brain.
(2)

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



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



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



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



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



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



(ii) The images show brain scans produced from two imaging techniques other than
PET.




Image 1 Image 2
(Source: ZEPHYR/SCIENCE PHOTO LIBRARY) (Source: ALFRED PASIEKA/SCIENCE PHOTO LIBRARY)

State how image 1 can be identified as being produced by CT and image 2 by MRI.
(1)

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



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




3
■■■■ Turn over

, (c) The diagram shows a human brain.




P



Q




Brain tumours can change brain function.
Describe the possible effects of brain tumours in parts P and Q.
(2)

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



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



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



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


(Total for Question 1 = 7 marks)




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