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PHYSIOLOGY EVOLUTION AND ECOLO
, EDEXCEL A LEVEL JUNE 2023
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 16 June 2023
Morning (Time: 1 hour 45 minutes) Paper
reference 9BI0/02
Biology B
Advanced
PAPER 2: Advanced Physiology, Evolution and Ecology
You must have: Total Marks
Scientific calculator, HB pencil, ruler
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.
•• Answer all questions.
Answer the questions in the spaces provided
– there may be more space than you need.
Information
•• The total mark for this paper is 90.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• Instructure
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 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
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 Carbohydrates and proteins are important biological molecules.
(a) The diagrams show some of the bonds found in biological molecules.
δ– H O H H H
O Hδ+
δ+ H C O C C C C
H Oδ–
O
H
V W X
C
S
H
S
C N C C
C
O
Y Z
(i) Which one of the letters shows a bond that joins glucose molecules together
in a disaccharide?
(1)
A W
B X
C Y
D Z
2
*P71910A0236*
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