Exam (elaborations)
Pearson Edexcel Level 3 GCE Biology A Advanced Subsidiary PAPER 2 Development, Plants and the Environment
Pearson Edexcel Level 3 GCE Biology A Advanced Subsidiary PAPER 2 Development, Plants and the Environment
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Please check the examination details below before entering your candidate informationCandidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3
GCE
Thursday 25 May 2023
Pape
8BN0/02
Morning (Time: 1 hour 30
r
reference
minutes)
Biology A (Salters Nuffield)
Advanced Subsidiary
PAPER 2: Development, Plants and the Environment
You must have: Total Marks
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•• Use black ink or ball-point pen.
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centre number and candidate number.
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all
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• appropriate. – there may
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questions.
be spaces
in the more space than you need.
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provided
•• The total mark for this paper is 80.
•
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The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• calculator.
In questions marked with an asterisk (*), marks will be awarded for your
ability to structure your answer logically, showing how the points that you
make are related or follow on from each other where appropriate.
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•• Try to answer every
Check your answers if you have time at the end.
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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
AREA
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change your mind about an answer, put a line through the box and
then mark your new answer with a cross .
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
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(b) Plant and animal cells both undergo the process of (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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2
, (c) Mitotic division in the common sunflower, Helianthus annuus, was
investigated.
Several samples of 1 000 root tip cells were examined and the stage of the
cell cycle recorded for each cell.
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The photograph shows a single root tip cell.
AREA
© STEVE GSCHMEISSNER/SCIENCE
PHOTO LIBRARY
(1)
(i) Which stage of mitosis is shown in this cell?
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A anaphase
B metaphase
C prophase
D telophase
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3
Turn
over
, (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
Sample
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
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Which is the approximate ratio of the number of cells not in 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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4
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