*P75619RA0128*
Turn over P75619RA
©2023 Pearson Education Ltd.
Z:1/1/1/1/1/1/1/Please check the examination details below before entering your candidate information Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel International Advanced Level
Monday 23 October 2023
Morning (Time: 1 hour 45 minutes)WBI15/01Paperreference Total Marks Biology
International Advanced Level
UNIT 5: Respiration, Internal Environment, Coordination and Gene Technology
You must have:Scientific article (enclosed), 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 .• In 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. *P75619RA0228*
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 image sho
ws a section of a recombinant DNA molecule. (a) (i) Which enz yme is used in the production of recombinant DNA?
(1) A acetylcholinesterase B amylase C restriction endonuclease D RNA polymerase (ii) DNA is presen
t in bacterial cells. Wher
e is DNA found in a bacterial cell?
(1) A nucleus only B plasmid only C plasmid and cyt oplasm D plasmid and nucleus *P75619RA0328* 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 (iii) Which bond joins nucleotides t ogether in a single strand of DNA?
(1) A hydrogen B ionic C peptide D phosphodiester (b) Descr
ibe how genes can be switched off by transcription factors.
(3)
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................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
(Total for Question 1 = 6 marks) *P75619RA0428*
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 photograph shows the eyes of a meerkat.
(Source: Jeremy Pardoe / Alamy Stock Photo) (a) Describe how the pupil of an eye dilates and contracts in response to changes in ligh
t intensity.
(4)
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................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Turn over P75619RA
©2023 Pearson Education Ltd.
Z:1/1/1/1/1/1/1/Please check the examination details below before entering your candidate information Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel International Advanced Level
Monday 23 October 2023
Morning (Time: 1 hour 45 minutes)WBI15/01Paperreference Total Marks Biology
International Advanced Level
UNIT 5: Respiration, Internal Environment, Coordination and Gene Technology
You must have:Scientific article (enclosed), 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 .• In 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. *P75619RA0228*
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 image sho
ws a section of a recombinant DNA molecule. (a) (i) Which enz yme is used in the production of recombinant DNA?
(1) A acetylcholinesterase B amylase C restriction endonuclease D RNA polymerase (ii) DNA is presen
t in bacterial cells. Wher
e is DNA found in a bacterial cell?
(1) A nucleus only B plasmid only C plasmid and cyt oplasm D plasmid and nucleus *P75619RA0328* 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 (iii) Which bond joins nucleotides t ogether in a single strand of DNA?
(1) A hydrogen B ionic C peptide D phosphodiester (b) Descr
ibe how genes can be switched off by transcription factors.
(3)
....................................................................................................................................................................................................................................................................................
................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
(Total for Question 1 = 6 marks) *P75619RA0428*
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 photograph shows the eyes of a meerkat.
(Source: Jeremy Pardoe / Alamy Stock Photo) (a) Describe how the pupil of an eye dilates and contracts in response to changes in ligh
t intensity.
(4)
....................................................................................................................................................................................................................................................................................
................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
