*P75618A0136*
Turn over P75618A
©2023 Pearson Education Ltd.
Z:1/1/1/1/1/1/Please check the examination details below before entering your candidate information Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel International Advanced Level
Thursday 19 October 2023
Morning (Time: 1 hour 45 minutes)WBI14/01Paperreference Total Marks Biology
International Advanced Level UNIT 4: Energy, Environment, Microbiology and Immunity
You must have:Scientific calculator, ruler, HB pencil
Instructions
• Use black ink or ball-point pen.• Fill in the boxes at the top of this page with your name, centre number and candidate number.• Answer all questions.• Answer the questions in the spaces provided – there may be more space than you need .
Information
• The total mark for this paper is 90.• The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question .• Questions labelled 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 question.• Check your answers if you have time at the end. *P75618A0236*
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2
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 answer, put a line through the box and then mark your new answer with a cross .
1 The struc
ture of a chloroplast is related to its role in photosynthesis. The diag
ram shows a chloroplast.
T
R
Q
PWS
VU (a) Which is the site of photolysis?
(1) A P B R C T D V (b) Which c
ontains a gene coding for RUBISCO?
(1) A P B Q C S D V *P75618A0336* Turn over 3
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA (c) Where do hydrogen ions accumulate for use in photosynthesis?
(1) A Q B R C S D V (d) (i) How man
y of the structures labelled P , T, U and W are made of phospholipids?
(1) A 1 B 2 C 3 D 4 (ii) Which descr
ibes a phospholipid?
(1) A glycerol attached to two fatty acids and one phosphate group B glycerol attached to two fatty acids and two phosphate groups C glycerol attached to three fatty acids and one phosphate group D glycerol attached to three fatty acids and two phosphate groups (e) The length of a c
ell was measured. It was found to be 0.0085 cm long. The r
atio of the length of this cell to the length of a chloroplast was 11.7 : 1. Calcula
te the length of this chloroplast. Give y
our answer in µm to 2 significant figures.
(2)
Answer .............................................................. µm
(Total for Question 1 = 7 marks) *P75618A0436*
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4
2 The body responds to infection with non-specific responses and the immune response. (a) Inflamma
tion is characterised by heat, redness and two other characteristics. (i) Name the t
wo other characteristics of inflammation.
(1)
....................................................................................................................................................................................................................................................................................
.................................................................................................................................................................................................................................................................................... (ii) Explain how hea t helps the body respond to infection.
(2)
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ (b) Describe how interferon helps the body respond to infection. (2)
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Turn over P75618A
©2023 Pearson Education Ltd.
Z:1/1/1/1/1/1/Please check the examination details below before entering your candidate information Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel International Advanced Level
Thursday 19 October 2023
Morning (Time: 1 hour 45 minutes)WBI14/01Paperreference Total Marks Biology
International Advanced Level UNIT 4: Energy, Environment, Microbiology and Immunity
You must have:Scientific calculator, ruler, HB pencil
Instructions
• Use black ink or ball-point pen.• Fill in the boxes at the top of this page with your name, centre number and candidate number.• Answer all questions.• Answer the questions in the spaces provided – there may be more space than you need .
Information
• The total mark for this paper is 90.• The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question .• Questions labelled 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 question.• Check your answers if you have time at the end. *P75618A0236*
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
2
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 answer, put a line through the box and then mark your new answer with a cross .
1 The struc
ture of a chloroplast is related to its role in photosynthesis. The diag
ram shows a chloroplast.
T
R
Q
PWS
VU (a) Which is the site of photolysis?
(1) A P B R C T D V (b) Which c
ontains a gene coding for RUBISCO?
(1) A P B Q C S D V *P75618A0336* Turn over 3
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA (c) Where do hydrogen ions accumulate for use in photosynthesis?
(1) A Q B R C S D V (d) (i) How man
y of the structures labelled P , T, U and W are made of phospholipids?
(1) A 1 B 2 C 3 D 4 (ii) Which descr
ibes a phospholipid?
(1) A glycerol attached to two fatty acids and one phosphate group B glycerol attached to two fatty acids and two phosphate groups C glycerol attached to three fatty acids and one phosphate group D glycerol attached to three fatty acids and two phosphate groups (e) The length of a c
ell was measured. It was found to be 0.0085 cm long. The r
atio of the length of this cell to the length of a chloroplast was 11.7 : 1. Calcula
te the length of this chloroplast. Give y
our answer in µm to 2 significant figures.
(2)
Answer .............................................................. µm
(Total for Question 1 = 7 marks) *P75618A0436*
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
4
2 The body responds to infection with non-specific responses and the immune response. (a) Inflamma
tion is characterised by heat, redness and two other characteristics. (i) Name the t
wo other characteristics of inflammation.
(1)
....................................................................................................................................................................................................................................................................................
.................................................................................................................................................................................................................................................................................... (ii) Explain how hea t helps the body respond to infection.
(2)
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ (b) Describe how interferon helps the body respond to infection. (2)
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
