Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Thursday 22 May 2025
Morning (Time: 1 hour 30 minutes) Paper
reference 8BN0/02
Biology A (Salters Nuffield)
Advanced Subsidiary
PAPER 2: Development, Plants and the Environment
, 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
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 All living organisms are made of cells.
(a) The image shows an electronmicrograph of an organelle found only in
eukaryotic cells.
A
B
(Source: © Omikron/SCIENCE PHOTO LIBRARY)
magnification ×44 000
(i) This organelle is not found in prokaryotic cells.
Explain why this type of organelle is present only in eukaryotic cells and not
in prokaryotic cells.
(2)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
(ii) Calculate the width of this organelle from A to B, as shown in the image.
Give your answer in micrometres (µm) to two significant figures.
(2)
................................................... . . . . . . . . . . . µm
2
*P78688A0228*
, (b) The image shows an electronmicrograph of part of a eukaryotic cell.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
E
F
G
(Source: © Don Fawcett/SCIENCE PHOTO LIBRARY)
(i) Which row in the table identifies structures E, F and G?
(1)
Structure E Structure F Structure G
A chloroplast centriole nucleus
B chloroplast Golgi apparatus nuclear membrane
C mitochondrion centriole nuclear membrane
D mitochondrion Golgi apparatus nucleus
(ii) Which row of the table shows the processes that involve structures E and F?
(1)
Structure E Structure F
A photosynthesis mitosis
B photosynthesis protein synthesis
C respiration mitosis
D respiration photosynthesis
(Total for Question 1 = 6 marks)
3
*P78688A0328* Turn over
, 2 The photograph shows a Pyrenean desman, a mammal that is endemic to
fast‑flowing mountain streams in Spain.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
(Source: © BIOSPHOTO/Alamy Stock Photo)
(a) Which of the following is the correct definition of the term endemic?
(1)
A found in only one type of habitat
B found in only one geographical location
C lives in many different locations
D occupies a single niche
(b) The Pyrenean desman has a number of adaptations that allow it to survive in
its habitat:
1. it feeds on insects
2. it has webbed feet to enable it to swim
3. it has a long snout that it can use to find food in between rocks
4. it has nostrils on the upper surface of the snout
5. it is nocturnal – feeding at night.
(i) Which adaptations from the list are all anatomical adaptations?
(1)
A 1, 2 and 3
B 1, 3 and 4
C 2, 3 and 4
D 3, 4 and 5
4
*P78688A0428*
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Thursday 22 May 2025
Morning (Time: 1 hour 30 minutes) Paper
reference 8BN0/02
Biology A (Salters Nuffield)
Advanced Subsidiary
PAPER 2: Development, Plants and the Environment
, 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
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 All living organisms are made of cells.
(a) The image shows an electronmicrograph of an organelle found only in
eukaryotic cells.
A
B
(Source: © Omikron/SCIENCE PHOTO LIBRARY)
magnification ×44 000
(i) This organelle is not found in prokaryotic cells.
Explain why this type of organelle is present only in eukaryotic cells and not
in prokaryotic cells.
(2)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
(ii) Calculate the width of this organelle from A to B, as shown in the image.
Give your answer in micrometres (µm) to two significant figures.
(2)
................................................... . . . . . . . . . . . µm
2
*P78688A0228*
, (b) The image shows an electronmicrograph of part of a eukaryotic cell.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
E
F
G
(Source: © Don Fawcett/SCIENCE PHOTO LIBRARY)
(i) Which row in the table identifies structures E, F and G?
(1)
Structure E Structure F Structure G
A chloroplast centriole nucleus
B chloroplast Golgi apparatus nuclear membrane
C mitochondrion centriole nuclear membrane
D mitochondrion Golgi apparatus nucleus
(ii) Which row of the table shows the processes that involve structures E and F?
(1)
Structure E Structure F
A photosynthesis mitosis
B photosynthesis protein synthesis
C respiration mitosis
D respiration photosynthesis
(Total for Question 1 = 6 marks)
3
*P78688A0328* Turn over
, 2 The photograph shows a Pyrenean desman, a mammal that is endemic to
fast‑flowing mountain streams in Spain.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
(Source: © BIOSPHOTO/Alamy Stock Photo)
(a) Which of the following is the correct definition of the term endemic?
(1)
A found in only one type of habitat
B found in only one geographical location
C lives in many different locations
D occupies a single niche
(b) The Pyrenean desman has a number of adaptations that allow it to survive in
its habitat:
1. it feeds on insects
2. it has webbed feet to enable it to swim
3. it has a long snout that it can use to find food in between rocks
4. it has nostrils on the upper surface of the snout
5. it is nocturnal – feeding at night.
(i) Which adaptations from the list are all anatomical adaptations?
(1)
A 1, 2 and 3
B 1, 3 and 4
C 2, 3 and 4
D 3, 4 and 5
4
*P78688A0428*
