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A-Level OCR 2025 Biology B (Advancing
12GCEreee Biology) Paper 1 Mark Scheme
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Oxford Cambridge and RSA Examinations
,Nbb45648dhbn sfhgnfkkjisfuhrf 68u77wf jhoi9yyrrbdf dg gnuhejrkjfjsfhsferf
OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of
qualifications to meet the needs of candidates of all ages and abilities. OCR qualifications
include AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technicals,
Functional Skills, Key Skills, Entry Level qualifications, NVQs and vocational qualifications in
areas such as IT, business, languages, teaching/training, administration and secretarial skills.
It is also responsible for developing new specifications to meet national requirements and the
needs of students and teachers. OCR is a not-for-profit organisation; any surplus made is
invested back into the establishment to help towards the development of qualifications and
support, which keep pace with the changing needs of today’s society.
This mark scheme is published as an aid to teachers and students, to indicate the requirements
of the examination. It shows the basis on which marks were awarded by examiners. It does not
indicate the details of the discussions which took place at an examiners’ meeting before marking
commenced.
All examiners are instructed that alternative correct answers and unexpected approaches in
candidates’ scripts must be given marks that fairly reflect the relevant knowledge and skills
demonstrated.
Mark schemes should be read in conjunction with the published question papers and the report
on the examination.
© OCR 2025
Oxford Cambridge and RSA Examinations
, H422/01 Mark Scheme June 2025
MARKING INSTRUCTIONS
PREPARATION FOR MARKING
RM ASSESSOR
1. Make sure that you have accessed and completed the relevant training packages for on-screen marking: RM Assessor Online Training: OCR
Essential Guide to Marking.
2. Make sure that you have read and understood the mark scheme and the question paper for this unit. These are available in RM Assessor
3. Log-in to RM Assessor and mark the required number of practice responses (“scripts”) and the required number of standardisation responses.
MARKING
1. Mark strictly to the mark scheme.
2. Marks awarded must relate directly to the marking criteria.
3. The schedule of dates is very important. It is essential that you meet the RM Assessor 50% and 100% (traditional 40% Batch 1 and 100% Batch
2) deadlines. If you experience problems, you must contact your Team Leader (Supervisor) without delay.
4. If you are in any doubt about applying the mark scheme, consult your Team Leader by telephone, email or via the RM Assessor messaging
system.
5. Crossed-Out Responses
Where a candidate has crossed out a response and provided a clear alternative then the crossed-out response is not marked. Where no
alternative response has been provided, examiners may give candidates the benefit of the doubt and mark the crossed-out response where
legible.
Rubric Error Responses – Optional Questions
Where candidates have a choice of question across a whole paper or a whole section and have provided more answers than required, then
all responses are marked and the highest mark allowable within the rubric is given. Enter a mark for each question answered into RM
2
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dgdgdgdgdgdscnbnmDf;lfk’k’K’K’;;;;;;;;;;;;;;;;;;;;;;’’’’KLK’
aa
’LK’’’’’’’’LLLLLLLLLLLSSSSSSSSSSSSSSSSSSDD
A-Level OCR 2025 Biology B (Advancing
12GCEreee Biology) Paper 1 Mark Scheme
FEDGDGDGSAAAAAAAAAAAAAAGGGfgggggggggggggggggggggggggggggggggggggggggggg
gggggg B-jbbbbbbbfdfbbbbbbbbbbbbbbbb
erBiology Br
3453rsfd rttttttttttttttttttt ewwwwwwwwwwww4 333333333ggg fffffffffffffffg ttttttttttttttttttttttttt
qqqqqqqqqqqqqqqr tfgdggggggggggggggt hhhhhhhhhhhhhhhhhhhhhhhh
ccH422/01: Fundamentals of biologyyyyyyyyyyyyyyyyj
Yyyyyyyyyyyyjkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkh
ccccccccccccccsssssssssssssssssssssssss
fdfA Levelkjkjkjk
etrgfffhhhhhhhhhhhhhhhh
fhhhhhhhhhhhhhhhhhhhhhhhhhhhdddddddddddddddddddddddddddd
erMark Scheme for June 2025
5555mnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnn
Oxford Cambridge and RSA Examinations
,Nbb45648dhbn sfhgnfkkjisfuhrf 68u77wf jhoi9yyrrbdf dg gnuhejrkjfjsfhsferf
OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of
qualifications to meet the needs of candidates of all ages and abilities. OCR qualifications
include AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technicals,
Functional Skills, Key Skills, Entry Level qualifications, NVQs and vocational qualifications in
areas such as IT, business, languages, teaching/training, administration and secretarial skills.
It is also responsible for developing new specifications to meet national requirements and the
needs of students and teachers. OCR is a not-for-profit organisation; any surplus made is
invested back into the establishment to help towards the development of qualifications and
support, which keep pace with the changing needs of today’s society.
This mark scheme is published as an aid to teachers and students, to indicate the requirements
of the examination. It shows the basis on which marks were awarded by examiners. It does not
indicate the details of the discussions which took place at an examiners’ meeting before marking
commenced.
All examiners are instructed that alternative correct answers and unexpected approaches in
candidates’ scripts must be given marks that fairly reflect the relevant knowledge and skills
demonstrated.
Mark schemes should be read in conjunction with the published question papers and the report
on the examination.
© OCR 2025
Oxford Cambridge and RSA Examinations
, H422/01 Mark Scheme June 2025
MARKING INSTRUCTIONS
PREPARATION FOR MARKING
RM ASSESSOR
1. Make sure that you have accessed and completed the relevant training packages for on-screen marking: RM Assessor Online Training: OCR
Essential Guide to Marking.
2. Make sure that you have read and understood the mark scheme and the question paper for this unit. These are available in RM Assessor
3. Log-in to RM Assessor and mark the required number of practice responses (“scripts”) and the required number of standardisation responses.
MARKING
1. Mark strictly to the mark scheme.
2. Marks awarded must relate directly to the marking criteria.
3. The schedule of dates is very important. It is essential that you meet the RM Assessor 50% and 100% (traditional 40% Batch 1 and 100% Batch
2) deadlines. If you experience problems, you must contact your Team Leader (Supervisor) without delay.
4. If you are in any doubt about applying the mark scheme, consult your Team Leader by telephone, email or via the RM Assessor messaging
system.
5. Crossed-Out Responses
Where a candidate has crossed out a response and provided a clear alternative then the crossed-out response is not marked. Where no
alternative response has been provided, examiners may give candidates the benefit of the doubt and mark the crossed-out response where
legible.
Rubric Error Responses – Optional Questions
Where candidates have a choice of question across a whole paper or a whole section and have provided more answers than required, then
all responses are marked and the highest mark allowable within the rubric is given. Enter a mark for each question answered into RM
2
