Exam (elaborations)
EDEXCEL A LEVEL BIOLOGY 2022 QUESTION PAPER 1
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EDEXCEL A LEVEL BIOLOGY 2022 QUESTION PAPER 1
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Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Time 2 hours
Paper
reference 9BN0/01
Biology A (Salters Nuffield)
Advanced
PAPER 1: The Natural Environment and
Species Survival
You must have: Total Marks
Ruler, pencil and calculator
Instructions
• Use black ink or ball-point pen.
• centrethe
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number and candidate number.
• Answer all questions.
• Show all your working out in calculations and include units where appropriate.
• – there may
Answer the questions in the spaces provided
be more space than you need.
Information
• The total mark for this paper is 100.
• The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• You may use a scientific calculator.
• structure
In questions marked with an asterisk (*), marks will be awarded for your ability to
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*P67090RA0132*
P67090RA
©2022 Pearson Education Ltd.
Q:1/1/1/1/1
, Answer ALL questions.
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 Mineral ions are required for plant growth.
(a) (i) Nitrate ions are required for the synthesis of
(1)
A amino acids
B cellulose
C starch
D sucrose
(ii) Phosphate ions are required for the synthesis of
(1)
A cellulose
B chlorophyll
C nucleic acids
D sucrose
(iii) Magnesium ions are present in the structure of
(1)
A amino acids
B cellulose
C chlorophyll
D starch
2
*P67090RA0232*
, (b) Mineral ions enter the plant through the roots.
Mineral ions in the soil are in lower concentrations than in the vacuoles of
root hair cells.
Describe how mineral ions are taken up by root hair cells.
(3)
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(Total for Question 1 = 6 marks)
3
*P67090RA0332* Turn over
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