Pearson Edexcel GCE
In Biology A Salters Nuffield (9BN0)
Paper 2: Energy, Exercise and Coordination
, gy
iolo
2022 xcel B
Edexcel and BTEC Qualifications
Ede
Edexcel and BTEC qualifications come from Pearson, the world’s leading learning company. 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 for our BTEC qualifications.
Alternatively, you can get in touch with us using the details on our contact us page at www.edexcel.com/contactus.
If you have any subject specific questions about this specification that require the help of a subject specialist, you can speak directly to the
subject team at Pearson.
Their contact details can be found on this link: www.edexcel.com/teachingservices.
You can also use our online Ask the Expert service at www.edexcel.com/ask. You will need an Edexcel username and password to access
this service.
Pearson: helping people progress, everywhere
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
• 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
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller codersimon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £4.91. You're not tied to anything after your purchase.
