Pearson Edexcel GCE Advanced Subsidary In Biology B (8BI0 01) Paper 1: Core
Cellular Biology and Microbiology Mark Scheme (Results) Summer 2025
Mark Scheme (Results)
Summer 2025
Pearson Edexcel
GCE Advanced
Subsidary In
Biology B (8BI0 01)
Paper 1: Core Cellular Biology and
Microbiology
,Edexcel and BTEC Qualifications
Edexcel and BTEC qualifications are awarded by Pearson, the UK’s largest
awarding body. We provide a wide range of qualifications including academic,
vocational, occupational and specific programmes for employers. For further
information visit our qualifications websites at www.edexcel.com or
www.btec.co.uk. Alternatively, you can get in touch with us using the details on
our contact us page at www.edexcel.com/contactus.
Pearson: helping people progress, everywhere
Pearson aspires to be the world’s leading learning company. Our aim is to help
everyone progress in their lives through education. We believe in every kind of
learning, for all kinds of people, wherever they are in the world. We’ve been
involved in education for over 150 years, and by working across 70 countries, in
100 languages, we have built an international reputation for our commitment to
high standards and raising achievement through innovation in education. Find out
more about how we can help you and your students at: www.pearson.com/uk
Summer 2025
Question Paper Log Number
P78689A Publications Code
8BI0_01_2506_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
Cellular Biology and Microbiology Mark Scheme (Results) Summer 2025
Mark Scheme (Results)
Summer 2025
Pearson Edexcel
GCE Advanced
Subsidary In
Biology B (8BI0 01)
Paper 1: Core Cellular Biology and
Microbiology
,Edexcel and BTEC Qualifications
Edexcel and BTEC qualifications are awarded by Pearson, the UK’s largest
awarding body. We provide a wide range of qualifications including academic,
vocational, occupational and specific programmes for employers. For further
information visit our qualifications websites at www.edexcel.com or
www.btec.co.uk. Alternatively, you can get in touch with us using the details on
our contact us page at www.edexcel.com/contactus.
Pearson: helping people progress, everywhere
Pearson aspires to be the world’s leading learning company. Our aim is to help
everyone progress in their lives through education. We believe in every kind of
learning, for all kinds of people, wherever they are in the world. We’ve been
involved in education for over 150 years, and by working across 70 countries, in
100 languages, we have built an international reputation for our commitment to
high standards and raising achievement through innovation in education. Find out
more about how we can help you and your students at: www.pearson.com/uk
Summer 2025
Question Paper Log Number
P78689A Publications Code
8BI0_01_2506_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
