Pearson Edexcel GCE In Biology (9BI0) Paper 03: General and Practical Principles in Biology Mark Scheme (Results) Summer 2025

Pearson Edexcel GCE In Biology (9BI0) Paper 03: General and Practical
Principles in Biology Mark Scheme (Results) Summer 2025



Mark Scheme (Results)




Summer 2025




Pearson Edexcel
GCE In Biology
(9BI0)
Paper 03: General and Practical
Principles in Biology

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Summer 2025
Question Paper Log Number P74462A
Publications Code 9BI0_03_2025_MS
All the material in this publication is copyright
© Pearson Education Ltd 2025

,General Marking Guidance


 All candidates must receive the same
treatment. Examiners must mark the first
candidate in exactly the same way as they mark
the last.
 Mark schemes should be applied positively.
Candidates must be rewarded for what they have
shown they can do rather than penalised for
omissions.
 Examiners should mark according to the mark
scheme not according to their perception of
where the grade boundaries may lie.
 There is no ceiling on achievement. All marks on the mark
scheme should be used appropriately.
 All the marks on the mark scheme are
designed to be awarded. Examiners should
always award full marks if deserved, i.e. if the
answer matches the mark scheme. Examiners
should also be prepared to award zero marks if
the candidate’s response is not worthy of credit
according to the mark scheme.
 Where some judgement is required, mark schemes will
provide the principles by which marks will be
awarded and exemplification may be limited.
 When examiners are in doubt regarding the application
of the mark scheme to a candidate’s response, the team
leader must be consulted.
 Crossed out work should be marked UNLESS
the candidate has replaced it with an
alternative response.

, Question
Answer Additional Guidance Mark
Number
1(a) An answer that includes the following: Sample calculation

 conversion of actual size and Accept 64 000 to 66 000 (for measured size
correct measured size to same in µm) 6 x 10-4 (for actual size in cm)
units (1) 6 x 10-3 (for actual size in mm)

Accept answers in range 10 667 to 11 000
 correct answer to nearest whole number
(1)
Do not allow units
Correct answer with no working gains 2 marks (2)


Question
Answer Additional Guidance Mark
Number
1(b) An answer that includes the following:

 cell drawn correct shape with clear lines
Ignore cell wall if drawn
and no {shading / hatching} (1)


 {nucleus / vacuole} (1) Do not allow mitochondria
Do not allow anything smaller eg ribosomes (2)