Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel
International GCSE
Tuesday 8 January 2019
Afternoon (Time: 2 hours) Paper Reference 4BI0/1B 4SC0/1B
Biology
Unit: 4BI0
Science (Double Award) 4SC0
Paper: 1B
You must have: Total Marks
Ruler
Calculator
Instructions
• Use black ink or ball-point pen.
• centre
Fill in the boxes at the top of this page with your name,
number and candidate number.
• Answer all questions.
• Answer the questions in the spaces provided
– there may be more space than you need.
• Show all the steps in any calculations and state the units.
Information
• The total mark for this paper is 120.
• The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
Advice
• Read each question carefully before you start to answer it.
• Write your answers neatly and in good English.
• Try to answer every question.
• your answers if you have time at the end.
Check
Turn over
*P55764A0132*
P55764A
©2019 Pearson Education Ltd.
1/1/1/1/1/1/
, Answer ALL questions.
1 (a) Diagram 1 shows a section through an eye with parts labelled A to F.
DO NOT WRITE IN THIS AREA
retina
C
B
D
E
A
F
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Diagram 1
(i) Give the letter that labels the cornea.
(1)
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
(ii) Give the letter that labels a jelly-like fluid.
(1)
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
(iii) Give the function of part A.
(1)
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. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
2
*P55764A0232*
, (b) Diagram 2 shows a section through the eye of a person with a detached retina.
detached
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retina
Diagram 2
Suggest how a detached retina could affect vision.
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(2)
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
(Total for Question 1 = 5 marks)
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3
*P55764A0332* Turn over
, 2 Tubifex are worms that live in mud at the bottom of rivers and lakes.
The diagram shows some Tubifex worms living in river mud.
DO NOT WRITE IN THIS AREA
Tubifex worm
with buried head
river mud
Bacteria live in the mud and feed on dead plant material.
Tubifex worms bury their heads in the mud to feed on these bacteria.
Tubifex worms are eaten by fish.
(a) Use this information to draw a food chain that includes Tubifex worms.
DO NOT WRITE IN THIS AREA
(2)
(b) A scientist investigates the relationship between the mass of dead plant material
in the river mud and the population size of Tubifex worms.
The graph shows the scientist’s results.
DO NOT WRITE IN THIS AREA
Population size
of Tubifex worms
Mass of dead plant material
4
*P55764A0432*
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel
International GCSE
Tuesday 8 January 2019
Afternoon (Time: 2 hours) Paper Reference 4BI0/1B 4SC0/1B
Biology
Unit: 4BI0
Science (Double Award) 4SC0
Paper: 1B
You must have: Total Marks
Ruler
Calculator
Instructions
• Use black ink or ball-point pen.
• centre
Fill in the boxes at the top of this page with your name,
number and candidate number.
• Answer all questions.
• Answer the questions in the spaces provided
– there may be more space than you need.
• Show all the steps in any calculations and state the units.
Information
• The total mark for this paper is 120.
• The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
Advice
• Read each question carefully before you start to answer it.
• Write your answers neatly and in good English.
• Try to answer every question.
• your answers if you have time at the end.
Check
Turn over
*P55764A0132*
P55764A
©2019 Pearson Education Ltd.
1/1/1/1/1/1/
, Answer ALL questions.
1 (a) Diagram 1 shows a section through an eye with parts labelled A to F.
DO NOT WRITE IN THIS AREA
retina
C
B
D
E
A
F
DO NOT WRITE IN THIS AREA
Diagram 1
(i) Give the letter that labels the cornea.
(1)
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
(ii) Give the letter that labels a jelly-like fluid.
(1)
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
(iii) Give the function of part A.
(1)
DO NOT WRITE IN THIS AREA
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
2
*P55764A0232*
, (b) Diagram 2 shows a section through the eye of a person with a detached retina.
detached
DO NOT WRITE IN THIS AREA
retina
Diagram 2
Suggest how a detached retina could affect vision.
DO NOT WRITE IN THIS AREA
(2)
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
. . . . . . . . . . . ..................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ............... .. .. .. .. .. .. .. .. .. .. ..
(Total for Question 1 = 5 marks)
DO NOT WRITE IN THIS AREA
3
*P55764A0332* Turn over
, 2 Tubifex are worms that live in mud at the bottom of rivers and lakes.
The diagram shows some Tubifex worms living in river mud.
DO NOT WRITE IN THIS AREA
Tubifex worm
with buried head
river mud
Bacteria live in the mud and feed on dead plant material.
Tubifex worms bury their heads in the mud to feed on these bacteria.
Tubifex worms are eaten by fish.
(a) Use this information to draw a food chain that includes Tubifex worms.
DO NOT WRITE IN THIS AREA
(2)
(b) A scientist investigates the relationship between the mass of dead plant material
in the river mud and the population size of Tubifex worms.
The graph shows the scientist’s results.
DO NOT WRITE IN THIS AREA
Population size
of Tubifex worms
Mass of dead plant material
4
*P55764A0432*
