, E
STRIP OFF
IOTHIS PAGESTRIP OFF THIS PAGESTRIP OFF THIS PAGE STRIP OFF THIS PAGESTRIP OFF THIS PAGESTRIP OFF THIS PAGESTRIP
N
OFF THIS PAGESTRIP OFF THIS PAGE STRIP OFF THIS PAGESTRIP OFF THIS PAGESTRIP OFF THIS PAGE STRIP OFF THIS PAGESTRIP OFF
ED
20
THIS PAGESTRIP OFF
23 THIS PAGESTRIP OFF THIS PAGESTRIP OFF THIS PAGESTRIP OFF THIS PAGESTRIP OFF THIS PAGESTRIP OFF THIS
PAGE STRIP OFF THIS
F PAGESTRIP OFF THIS PAGESTRIP OFF THIS PAGESTRIP OFF THIS PAGESTRIP OFF THIS PAGE
EX
CE
L
J AN
M UN D
AR E A
KS 20 LE
IS
CH 23 VE
L
EDEXCEL BIOLOGY B A LEVEL JUNE 2023
IO M
N
EM
E A
EDEXCEL
EL
MAY
PF
U
L
9NI0 PAPER
R
ED EV
JUNE
EX
C2
3 GENERAL
R 023
EL
H EV FO
MARKSCHEME
EL IS R
J U
AS
PF IO H
2023
AS AND A LEVEL
M N A U N 2 EL
L
R 02 PFU
AR E N
EV 3F L
KS 20 D AIS OR R
IO H EV
CH 23 LE N E IS
LP IO
EM VE FU N
L L 20
E M R 2F
EV O
IS R
PRATICAL PRINCIPLES IN BIOLOGY.
IO HE
AY
, 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
Wednesday 21 June 2023
Morning (Time: 2 hours 30 minutes) Paper
reference 9BI0/03
Biology B
Advanced
PAPER 3: General and Practical Principles in Biology
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 120.
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
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
1 Glucose is a monosaccharide.
(a) Complete the diagram to show the structure of beta‑glucose.
(1)
CH2OH
H O
H
OH H
HO
H OH
(b) Glucose molecules can be joined to form the polysaccharides starch and cellulose.
Give three differences between the structures of starch and cellulose.
(3)
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller tyrionsecond66. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £5.15. You're not tied to anything after your purchase.
