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Exam (elaborations)

Pearson Edexcel as level biology (8BN0/02) question paper 2 june 2024 salters Nuffield merged with mark scheme

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Pearson Edexcel as level biology (8BN0/02) question paper 2 june 2024 salters Nuffield merged with mark scheme

Institution
Pearson Edexcel As Level Biology
Course
Pearson Edexcel as level biology











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Institution
Pearson Edexcel as level biology
Course
Pearson Edexcel as level biology

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Uploaded on
December 16, 2024
Number of pages
54
Written in
2024/2025
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Pearson Edexcel as level biology
(8BN0/02) question paper 2 june 2024
salters Nuffield merged with mark scheme

, 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 Plant tissues can be observed using a light microscope.

(a) The photograph shows a cross section through part of a plant stem.

P

Q



R


S




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(Source: Sinhyu / Getty Images)

(i) Which of the following letters labels a xylem vessel?
(1)
A P

B Q

C R

D S


(ii) Which of the following is the main function of xylem vessels?
(1)
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A transport of mineral ions and organic solutes

B transport of water and mineral ions

C transport of water and organic solutes

D transport of water, mineral ions and organic solutes




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, (iii) Which of the following tissues contains sieve tubes?
(1)
A epidermal
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B phloem

C sclerenchyma

D xylem


(b) Calcium ions are transported through plant tissues.
Explain the importance of calcium ions to plants.
(3)

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(Total for Question 1 = 6 marks)
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, 2 Prokaryotic and eukaryotic cells contain genetic material.

These cells also contain structures involved in protein synthesis.




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(a) The diagram shows a goblet cell found in animals.




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(i) Draw and label a nucleolus on the diagram.
(1)

(ii) Name an organelle, other than the nucleus, that contains DNA.
(1)

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(iii) Describe the organisation of DNA in the nucleus of a eukaryotic cell.
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(2)

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