Pearson Edexcel
Level 3 GCE
Thursday 25 May
2023 8BN0/02
Biology A (Salters Nuffield)
Advanced Subsidiary
PAPER 2: Development, Plants and the
Environment
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1 Plant cells and animal cells have similarities and differences.
(a) Which of the following groups of organelles are found in both
animal and plant cells?
(1)
A amyloplasts, chloroplasts and Golgi apparatus
B amyloplasts, Golgi apparatus and rough endoplasmic
reticulum
C cell wall, Golgi apparatus and mitochondria
D Golgi apparatus, mitochondria and rough
endoplasmic reticulum
(b) Plant and animal cells both undergo the process of
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(1)
mitosis. Which of the following happens during the
process of mitosis?
A the cell divides
B the cell membrane breaks down
C the nucleus divides
D the organelles multiply
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, (c) Mitotic division in the common sunflower, Helianthus annuus, was
investigated.
Several samples of 1 000 root tip cells were examined and the
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stage of the cell cycle recorded for each cell.
The photograph shows a single root tip cell.
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A anaphase
B metaphase
C prophase
D telophase
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, (ii) The results of five root tip samples are shown in the table.
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Number of cells in each stage of the cell cycle
Sampl
e Interphase Prophase Metaphase Anaphase Telophase
1 888 100 7 3 2
2 872 114 10 2 2
3 879 102 15 2 2
4 879 72 25 22 2
5 848 132 10 10 0
Mean 873 104 13 8 2
Which is the approximate ratio of the number of cells not in
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mitosis to the number of cells in mitosis?
(1)
A 9:1
B 9:2
C 7:1
D 7:2
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