CandidateRsurname OtherRnames
CentreRNumber CandidateRNumber
Pearson Edexcel Level 3 GCE R R R R
Monday 15 May 2023
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MorningR(Time:R1RhourR30Rminutes) PaperRre
ference 8BI0/01
Biology B R
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Advanced Subsidiary R
PAPER 1: Core Cellular Biology and Microbiology
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YouRmustRhave: TotalRMarks
ScientificRcalculator,RHBRpencil,Rruler
Instructions
•• Use black ink or ball-point pen.
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Fill in the boxes at the top of this page with your name,
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centre number and candidate number.
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•• Answer all questions. R
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Answer the questions in the spaces provided
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– thereRmayRbeRmoreRspaceRthanRyouRneed.
Information
•• The total mark for this paper is 80.
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The marks for each question are shown in brackets
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– use this as a guide as to how much time to spend on each question.
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• Inructure
question(s) marked with an asterisk (*), marks will be awarded for your ability to st
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your answer logically showing how the points that you make are relatedor f
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ollowRonRfromReachRotherRwhereRappropriate.
Advice
• Read each question carefully before you start to answer it.
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• Try to answer every question.
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• your answers if you have time at the end.
Check R R R R R R R R R
TurnRover
P71924A
©2023RPearsonREducationRLt
d.RN:1/1/1/1/1/1/
, AnswerR ALLR questions.
SomeR questionsR mustR beR answeredR withR aR crossR inR aR box
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.R IfR youR changeR yourR mindR aboutR anRanswer,RputRaRlineRt
hroughRtheRbox andR thenR markR yourR newR answerR withR aR cross .
1 Down’sRsyndromeRisRaRgeneticRcondition.
(a) WhichRrowRinRtheRtableRdescribesRtheRcauseRofRDown’sRsyndrome?
(1)
TypeRofRmutation ResultR ofR non‑disjunction
AR chromosome monosomy
BR chromosome polysomy
CR gene monosomy
D gene polysomy
(b) TheR graphR showsR theR effectR ofR theR ageR ofR theR motherR andR theR orderR inR whichRbabi
esR areR bornR inR aR familyR (birthR order)R onR theR incidenceR ofR Down’sR syndrome.
DORNOTRWRITER INRTHISR AREA
1000
800
IncidenceRofRDown
600 40+
’sRsyndromeRperR1
00R000Rlive 400 35–39
births 30–34
AgeRgroupRofRmother
25–29
200
20–24
<20
DORNOTRWRITER INRTHISR AREA
0
1 2 3 4 5
BirthRorder
2
, DetermineR theR effectsR ofR birthR orderR andR ageR ofR theR motherR onR theR incidenceR ofRDow
n’sRsyndrome.
(3)
DORNOTRWRITER INRTHISR AREA
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DORNOTRWRITER INRTHISR AREA
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