Pearson Edexcel Level GCE In Biology A Salters Nuffield (8BN0) Paper 01: Lifestyle, Transport, Genes and Health QP & MS June 2024

Pearson Edexcel AS Level GCE In Biology A
Salters Nuffield (8BN0) Paper 01: Lifestyle,
Transport, Genes and Health QP & MS
June 2024

, Centre Number Candidate Number




Pearson Edexcel Level 3 GCE
Monday 13 May 2024
Morning (Time: 1 hour 30 minutes) Paper
reference 8BN0/01
Biology A (Salters Nuffield) ■ ■


Advanced Subsidiary
PAPER 1: Lifestyle, Transport, Genes and Health

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P7 4472A
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, Answer ALL questions. Write your answers in the spaces provided.

Some questions must be answered with a cross in a box . If you change your mind about an




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answer, put a line through the box and then mark your new answer with a cross .

1 The diagram shows part of the internal structure of a human heart.




R




Q
S




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P

(a) (i) How many of the following statements about the human heart are correct?
• structures P and S fill with deoxygenated blood when structures Q
and R contract

• structure R receives blood from the pulmonary vein

• when the cardiac muscle walls of P and S undergo diastole, blood leaves
the heart and enters the aorta and pulmonary artery
(1)
A none

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C two

D three


(ii) Complete the diagram to show the location of the semilunar valve in the
pulmonary artery.
(1)




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, (iii) Describe the role of this semilunar valve in the cardiac cycle.
(3)
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(b) The diagrams show a cross-section of an aorta and a vena cava.




aorta vena cava

(i) Complete the diagrams to show the relative sizes of the lumens.
(1)

(ii) Which of the following would be in contact with the blood in an undamaged
vena cava?
(1)
A collagen
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B endothelial cells

C epithelial cells

D smooth muscle cells
(Total for Question 1 = 7 marks)




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