Exam (elaborations)
EDEXCEL AS LEVEL BIOLOGY B 2022 QUESTION PAPER 2
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EDEXCEL AS LEVEL BIOLOGY B 2022 QUESTION PAPER 2
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Edexcel A Level 2022 papers andmarkschemes
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, Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel GCE
Time 1 hour 30 minutes
Paper
reference 8BI0/02
Biology B
Advanced Subsidiary
PAPER 2: Core Physiology and Ecology
You must have: Total Marks
Scientific calculator, HB pencil, ruler
Instructions
• Use black ink or ball-point pen.
• centrethe
Fill in 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.
Information
• The total mark for this paper is 80.
• The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• Into question(s) marked with an asterisk (*), marks will be awarded for your ability
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.
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*P69497A0132*
P69497A
©2022 Pearson Education Ltd.
Q:1/1/1/
, 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 diagram shows a magnified human red blood cell.
(a) The actual diameter of this cell is 7.20 µm.
Calculate the magnification of this diagram.
(2)
Answer ........................................ . . . . . . . . . . . . . . . . . . . . . .
2
*P69497A0232*
, (b) A regular sphere with a diameter of 7.20 µm has a surface area of 162.86 µm2.
(i) Calculate the volume of a sphere with a diameter of 7.20 µm.
4 3
Use the formula V = πr
3 (2)
Answer ..................................................... . . . . . . . . . µm3
(ii) Explain how a red blood cell with the same diameter as this sphere enables it
to carry out its functions in transporting gases in the blood.
(3)
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(Total for Question 1 = 7 marks)
3
*P69497A0332* Turn over
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