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Pearson Edexcel Level 3 GCE
Friday 14 June 2024
Paper
Morning (Time: 2 hours)
reference 9BN0/02
■ ■
Biology A (Salters Nuffield)
Advanced
PAPER 2: Energy, Exercise and Coordination
You must have: Total Marks
Scientific calculator, pencil, ruler
Pearson Edexcel Level 3 GCE Biology A (Salters Nuffield) Advanced PAPER 2: Energy, Exercise
and Coordination QP JUNE 2024
Instructions
• Use
• Fill
black ink or ball-point pen.
in the boxes at the top of this page with your name, centre
number and candidate number.
• Answer all questions.
• Show your working in any calculation questions and include units in your answer
• Answer
where appropriate.
the questions in the spaces provided –
there may be more space than you need.
Information
• The
• The
total mark for this paper is 100.
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
• Instructure
a scientific calculator.
question(s) marked with an asterisk (*), marks will be awarded for your ability to
your answer logically showing how the points that you make are related or follow on from
each other where appropriate.
Advice
• Read
• answer every question.
each question carefully before you start to answer it. Try to
• 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
DO NOT WRITE IN THIS AREA
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?
DO NOT WRITE IN THIS AREA
(1)
A carbon
B hydrogen
C nitrogen
D oxygen
(ii) Which group does P represent?
(1)
A CH2OH
B CH3
C COOH
D OH
DO NOT WRITE IN THIS AREA
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
DO NOT WRITE IN THIS AREA
brain tumours.
(i) Describe the advantages of using PET and fMRI rather than MRI scans to
investigate a possible tumour in the brain.
(2)
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