Mark Scheme (Results)
Summer 2025
Pearson Edexcel International Advanced Level
In Biology (WBI14)
Paper 01 Energy, Environment, Microbiology,
and Immunity
Pearson Edexcel International Advanced Level in Biology (WBI14) Paper 01: Energy, Environment,
Microbiology, and Immunity Mark Scheme (Results) Summer 2025
,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
Pearson Edexcel International Advanced Level in Biology (WBI14) Paper 01: Energy, Environment,
Microbiology, and Immunity Mark Scheme (Results) Summer 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.
Pearson Edexcel International Advanced Level in Biology (WBI14) Paper 01: Energy, Environment,
Microbiology, and Immunity Mark Scheme (Results) Summer 2025
, Question Answer Mark
number
1(a)
The only correct answer is D
A is incorrect because entomology is the study of insects
B is incorrect because evolution is the changes to organisms not land
C is incorrect because speciation is the formation of new species not characteristics of land (1)
Question Answer Mark
number
1(b)
The only correct answer is B
A is incorrect because Archaea is a domain of organisms
C is incorrect because epigenetic is changes to gene expression
D is incorrect because sustainable means renewable (1)
Pearson Edexcel International Advanced Level in Biology (WBI14) Paper 01: Energy, Environment, Microbiology, and Immunity Mark Scheme (Results) Summer
2025
Summer 2025
Pearson Edexcel International Advanced Level
In Biology (WBI14)
Paper 01 Energy, Environment, Microbiology,
and Immunity
Pearson Edexcel International Advanced Level in Biology (WBI14) Paper 01: Energy, Environment,
Microbiology, and Immunity Mark Scheme (Results) Summer 2025
,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
Pearson Edexcel International Advanced Level in Biology (WBI14) Paper 01: Energy, Environment,
Microbiology, and Immunity Mark Scheme (Results) Summer 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.
Pearson Edexcel International Advanced Level in Biology (WBI14) Paper 01: Energy, Environment,
Microbiology, and Immunity Mark Scheme (Results) Summer 2025
, Question Answer Mark
number
1(a)
The only correct answer is D
A is incorrect because entomology is the study of insects
B is incorrect because evolution is the changes to organisms not land
C is incorrect because speciation is the formation of new species not characteristics of land (1)
Question Answer Mark
number
1(b)
The only correct answer is B
A is incorrect because Archaea is a domain of organisms
C is incorrect because epigenetic is changes to gene expression
D is incorrect because sustainable means renewable (1)
Pearson Edexcel International Advanced Level in Biology (WBI14) Paper 01: Energy, Environment, Microbiology, and Immunity Mark Scheme (Results) Summer
2025
