Pearson Edexcel
Level 3 GCE
Thursday 25 May
2023 8BN0/02
Biology A (Salters Nuffield)
Advanced Subsidiary
PAPER 2: Development, Plants and the
Environment
You must have: Total Marks
Calculator, HB pencil,
ruler
Instructions
• Use black ink or ball-point pen.
• Fill in the boxes at the top of this page with
centre number and candidate number.
• Answer
your
all
name,
• Show all your working out in calculations and include units
• Answer
where the questions
appropriate.
questions.
in themay
– there spaces
be more space than you need.
Information
provided
• The total mark for this paper is 80.
•– use this as a guide as to how much time to spend on each question.
• You may use a scientific
The marks for each question are shown in brackets
•Incalculator.
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.
Advice
• Read each question carefully before you start to answer it.
• Try to answer every
• Check your answers if you have time at the end.
Turn over
question.
, Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If
AREA
DO NOT WRITE IN THIS
you 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
(b) Plant and animal cells both undergo the process of
AREA
DO NOT WRITE IN THIS
(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
AREA
DO NOT WRITE IN THIS
, (c) Mitotic division in the common sunflower, Helianthus annuus, was
investigated.
Several samples of 1 000 root tip cells were examined and the
DO NOT WRITE IN THIS
stage of the cell cycle recorded for each cell.
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?
DO NOT WRITE IN THIS
A anaphase
B metaphase
C prophase
D telophase
AREA
DO NOT WRITE IN THIS
AREA
, (ii) The results of five root tip samples are shown in the table.
DO NOT WRITE IN THIS
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
AREA
DO NOT WRITE IN THIS
mitosis to the number of cells in mitosis?
(1)
A 9:1
B 9:2
C 7:1
D 7:2
AREA
DO NOT WRITE IN THIS
Level 3 GCE
Thursday 25 May
2023 8BN0/02
Biology A (Salters Nuffield)
Advanced Subsidiary
PAPER 2: Development, Plants and the
Environment
You must have: Total Marks
Calculator, HB pencil,
ruler
Instructions
• Use black ink or ball-point pen.
• Fill in the boxes at the top of this page with
centre number and candidate number.
• Answer
your
all
name,
• Show all your working out in calculations and include units
• Answer
where the questions
appropriate.
questions.
in themay
– there spaces
be more space than you need.
Information
provided
• The total mark for this paper is 80.
•– use this as a guide as to how much time to spend on each question.
• You may use a scientific
The marks for each question are shown in brackets
•Incalculator.
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.
Advice
• Read each question carefully before you start to answer it.
• Try to answer every
• Check your answers if you have time at the end.
Turn over
question.
, Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If
AREA
DO NOT WRITE IN THIS
you 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
(b) Plant and animal cells both undergo the process of
AREA
DO NOT WRITE IN THIS
(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
AREA
DO NOT WRITE IN THIS
, (c) Mitotic division in the common sunflower, Helianthus annuus, was
investigated.
Several samples of 1 000 root tip cells were examined and the
DO NOT WRITE IN THIS
stage of the cell cycle recorded for each cell.
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?
DO NOT WRITE IN THIS
A anaphase
B metaphase
C prophase
D telophase
AREA
DO NOT WRITE IN THIS
AREA
, (ii) The results of five root tip samples are shown in the table.
DO NOT WRITE IN THIS
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
AREA
DO NOT WRITE IN THIS
mitosis to the number of cells in mitosis?
(1)
A 9:1
B 9:2
C 7:1
D 7:2
AREA
DO NOT WRITE IN THIS
