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Pearson Edexcel In Biology A marking scheme june 2023 Paper 2 Energy, Exercise and Coordination
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Pearson Edexcel In Biology A marking scheme june 2023 Paper 2 Energy, Exercise and Coordination
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PearsonEdexcel
Mark Scheme (Results)
Summer 2023
Pearson Edexcel GCE
In Biology A (9BN0 02)
Paper 2: Energy, Exercise and Coordination
1
,2
,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.
3
, Question
Answer Mark
Number
1 (a)(i) The only correct answer is C metaphase
A is incorrect as centromeres and spindle fibred do not join in anaphase
B is incorrect as centromeres and spindle fibres do not join in interphase
D is incorrect as centromeres and spindle fibres do not join in telophase
[1]
Question
Answer Mark
Number
1 (a)(ii) The only correct answer is C prophase
A is incorrect as the nuclear envelope does not start to break down in interphase
B is incorrect as the nuclear envelope does not start to break down in metaphase
D is incorrect as the nuclear envelope does not start to break down in telophase
[1]
Question
Answer Mark
Number
1 (a)(iii) The only correct answer is C prophase
A is incorrect as chromatids are not first visible in interphase
B is incorrect as chromatids are not first visible in metaphase
4
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