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Edexcel A Level 2022 Biology A (Salters Nuffield) PAPER 2: Energy, Exercise and Co-ordination Mark Scheme £4.84
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Edexcel A Level 2022 Biology A (Salters Nuffield) PAPER 2: Energy, Exercise and Co-ordination Mark Scheme

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Edexcel A Level 2022 Biology A (Salters Nuffield) PAPER 2: Energy, Exercise and Co-ordination Mark Scheme

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  • June 24, 2023
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  • 2022/2023
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gy
iolo
2022 xcel B
Ede




Mark Scheme (Results)

Summer 2022

Pearson Edexcel GCE
In Biology A Salters Nuffield (9BN0)
Paper 2: Energy, Exercise and Coordination

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iolo
2022 xcel B




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Ede




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Summer 2022
Question Paper Log Number P67091A
Publications Code 9BN0_02_2206_MS
All the material in this publication is copyright
© Pearson Education Ltd 2022
General Marking Guidance

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2022 xcel B
Ede




• 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.

, gy
iolo
2022 xcel B
Ede




Question
Answer Additional Guidance Mark
Number
1(a)(i) A description that makes reference to two of the
following:

• the valves are open { when atria contract / atrial ALLOW valves open to allow blood to flow from atria to
systole / when blood pressure greater in atria ventricles
(than ventricles) } (1)

• the valves close { when ventricles contract /
during ventricular systole/when pressure greater
in ventricles (than atria) } (1)

• valves prevent backflow of blood into the atria ALLOW tendons prevent valves from inverting during
during ventricular systole (1) ventricular systole (2)



Question
Answer Additional Guidance Mark
Number

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