Pearson Edexcel
ACTUAL 2024
9BNO/03
A Level GCE
In Biology A Salters Nuffield (9BN0)
Paper 03: General and Practical Applications in
Biology
Question Paper&Mark Scheme
, Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Wednesday 19 June 2024
Morning (Time: 2 hours) Paper
reference 9BN0/03
Biology A (Salters Nuffield) 🞍 🞍
Advanced
PAPER 3: General and Practical Applications in Biology
You must have: Ruler, HB pencil, scientific calculator and a copy Total Marks
of the scientific article adapted from the New Scientist and the
Brazilian Journal of Medical and Biological Research (enclosed)
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.
•• Show all your working out in calculations and include units where appropriate.
Answer the questions in the spaces provided
– there may be more space than you need.
Information
• The total mark for this paper is 100.
• – usemarks
The for each question are shown in brackets
this as a guide as to how much time to spend on each question.
• Instructure
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.
Check your answers if you have time at the end.
Turn over
P74458RA
©2024 Pearson Education Ltd.
F:1/1/1/1/1/1/1/1/1/1/
, Answer ALL questions.
Write your answers in the spaces provided.
DO NOT WRITE IN THIS AREA
1 One of the first plant species to colonise some habitats is thale cress
(Arabidopsis thaliana).
The plant hormone IAA (auxin) is produced in the growing tips of plants such as
thale cress.
DO NOT WRITE IN THIS AREA
(Source: Nigel Cattlin / Alamy Stock Photo)
(a) State what is meant by the term colonisation of a habitat.
(1) DO NOT WRITE IN THIS AREA
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ..... . ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ... ..... ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
2
🞍🞍🞍🞍
, (b) One role of IAA is to stimulate the phototropic response of shoots.
Describe how IAA causes a phototropic response in the shoots of a plant.
DO NOT WRITE IN THIS AREA
(3)
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ..... . ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ..... . ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ... ..... ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
DO NOT WRITE IN THIS AREA
........ ..... ...... .. ... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ . .
(c) Another role of IAA is to stimulate the growth of lateral roots.
The diagram shows the roots of thale cress.
lateral roots
DO NOT WRITE IN THIS AREA
main root
3
🞍🞍🞍🞍 Turn over
ACTUAL 2024
9BNO/03
A Level GCE
In Biology A Salters Nuffield (9BN0)
Paper 03: General and Practical Applications in
Biology
Question Paper&Mark Scheme
, Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Wednesday 19 June 2024
Morning (Time: 2 hours) Paper
reference 9BN0/03
Biology A (Salters Nuffield) 🞍 🞍
Advanced
PAPER 3: General and Practical Applications in Biology
You must have: Ruler, HB pencil, scientific calculator and a copy Total Marks
of the scientific article adapted from the New Scientist and the
Brazilian Journal of Medical and Biological Research (enclosed)
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.
•• Show all your working out in calculations and include units where appropriate.
Answer the questions in the spaces provided
– there may be more space than you need.
Information
• The total mark for this paper is 100.
• – usemarks
The for each question are shown in brackets
this as a guide as to how much time to spend on each question.
• Instructure
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.
Check your answers if you have time at the end.
Turn over
P74458RA
©2024 Pearson Education Ltd.
F:1/1/1/1/1/1/1/1/1/1/
, Answer ALL questions.
Write your answers in the spaces provided.
DO NOT WRITE IN THIS AREA
1 One of the first plant species to colonise some habitats is thale cress
(Arabidopsis thaliana).
The plant hormone IAA (auxin) is produced in the growing tips of plants such as
thale cress.
DO NOT WRITE IN THIS AREA
(Source: Nigel Cattlin / Alamy Stock Photo)
(a) State what is meant by the term colonisation of a habitat.
(1) DO NOT WRITE IN THIS AREA
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ..... . ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ... ..... ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
2
🞍🞍🞍🞍
, (b) One role of IAA is to stimulate the phototropic response of shoots.
Describe how IAA causes a phototropic response in the shoots of a plant.
DO NOT WRITE IN THIS AREA
(3)
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ..... . ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ..... . ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ... ..... ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ ..
DO NOT WRITE IN THIS AREA
........ ..... ...... .. ... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... .. ...... ........ ..... ...... ..... ...... ..... ...... ...... ..... ...... ..... .... ........ ..... ...... ..... ...... ..... ...... ...... ..... .. .... ...... .. ........ . .
(c) Another role of IAA is to stimulate the growth of lateral roots.
The diagram shows the roots of thale cress.
lateral roots
DO NOT WRITE IN THIS AREA
main root
3
🞍🞍🞍🞍 Turn over
