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Please check the examination details below before entering your candidate information
2022 xcel B
Candidate surname Other names
Ede
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Paper
Time 2 hours
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
• Fill
Use black ink or ball-point pen.
• centrein the boxes at the top of this page with your name,
number and candidate number.
• Answer all questions.
• Answer
Show all your working out in calculations and include units where appropriate.
• – there maythe 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
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.
• your answers if you have time at the end.
Check
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*
, gy
iolo
2022 xcel B
(b) Mineral ions enter the plant through the roots.
Ede
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)
2 Anthropogenic activities are contributing to global warming.
Ede
Scientists from the IPCC (Intergovernmental Panel on Climate Change) say that
changes to diet can have a major impact on greenhouse gas emissions. The method
of farming affects the level of impact.
The Paris Agreement of 2015 committed countries to reduce carbon emissions.
(a) How many of the following statements about global warming are correct?
(1)
• global warming is caused by a reduction in greenhouse gases
• deforestation may contribute to global warming
• global warming is leading to the melting of sea ice
• global warming may lead to a change in rainfall patterns
• global warming is affecting only the ice caps
A 2
B 3
C 4
D 5
4
*P67090RA0432*
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