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PEARSON EDEXCEL A LEVEL Biology A PAPER 3 2023 QUESTION PAPER (9BN0/03: General and Practical Applications in Biology)
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PEARSON EDEXCEL A LEVEL Biology A PAPER 3 2023 QUESTION PAPER (9BN0/03: General and Practical Applications in Biology). DOWNLOAD OFFICIAL AND VERIFIED EDEXCEL P...
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PEARSON EDEXCEL A LEVEL Biology A PAPER 3 2023 QUESTION PAPER (9BN0/03: General and Practical Applications in Biology). DOWNLOAD OFFICIAL AND VERIFIED EDEXCEL PEARSON A LEVEL Biology A PAPER 3 2023 QUESTION PAPER on www.leakedexams.com


 The heart pumps blood around the circulation system.
(a) Explain why many animals need a heart and circulation system.
(2)
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(b) If the heart of an animal is removed from its body, the heart will continue to beat
for a period of time.
 The left atrium stops contracting if it is separated from the rest of the heart.
 However, the right atrium and the rest of the heart will continue to beat.
 Eventually, the right atrium and the rest of the heart will also stop beating.
 (i) Give a reason why the heart will continue to beat after being removed from
the body.
(1)
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 (ii) Explain why the left atrium stops beating when it is separated from the
right atrium.
(2)

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Author OCR KING
Published 30 Jul 2024
Included files PDF
9BN0 9BN0/03 PEARSON EDEXCEL A LEVEL Biology A PAPER 3 2023 QUESTION PAPER PEARSON EDEXCEL A LEVEL Biology A PAPER 3 2023 PEARSON EDEXCEL A LEVEL Biology PEARSON EDEXCEL Biology PAPER 3 EDEXCEL Biology Biology A PEARSON A LEVEL Biology
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