Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Monday 12 May 2025
Morning (Time: 1 hour 30 minutes) Paper
reference 8BN0/01
Biology A (Salters Nuffield)
Advanced Subsidiary
PAPER 1: Lifestyle, Transport, Genes and Health
You must have: Total Marks
Scientific calculator, HB pencil, ruler
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 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.
•• You may use a scientific calculator.
In questions marked with an asterisk (*), marks will be awarded for your ability to
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. Turn over
P78687A
©2025 Pearson Education Ltd.
Y:1/1/1/1/
*P78687A0128*
, 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
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 DNA and RNA are nucleic acids.
(a) (i) Which base is present in RNA but absent from DNA?
(1)
A adenine
B guanine
C thymine
D uracil
(ii) Which row shows the correct structure of these two molecules?
(1)
DNA Messenger RNA
A double‑stranded double‑stranded
B double‑stranded single‑stranded
C single‑stranded double‑stranded
D single‑stranded single‑stranded
(b) DNA acts as a template for the synthesis of messenger RNA.
(i) Which bond joins together mononucleotides in a strand of DNA and RNA?
(1)
A disulfide
B glycosidic
C peptide
D phosphodiester
2
*P78687A0228*
, (ii) Give three differences between the process of DNA replication and the
process of DNA transcription.
(3)
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
1 .. . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................................ . . . . . . . . . . . . . . . . . . . .
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2 .. . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................................ . . . . . . . . . . . . . . . . . . . .
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3 .. . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................................ . . . . . . . . . . . . . . . . . . . .
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(Total for Question 1 = 6 marks)
3
*P78687A0328* Turn over
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Monday 12 May 2025
Morning (Time: 1 hour 30 minutes) Paper
reference 8BN0/01
Biology A (Salters Nuffield)
Advanced Subsidiary
PAPER 1: Lifestyle, Transport, Genes and Health
You must have: Total Marks
Scientific calculator, HB pencil, ruler
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 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.
•• You may use a scientific calculator.
In questions marked with an asterisk (*), marks will be awarded for your ability to
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. Turn over
P78687A
©2025 Pearson Education Ltd.
Y:1/1/1/1/
*P78687A0128*
, 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
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 DNA and RNA are nucleic acids.
(a) (i) Which base is present in RNA but absent from DNA?
(1)
A adenine
B guanine
C thymine
D uracil
(ii) Which row shows the correct structure of these two molecules?
(1)
DNA Messenger RNA
A double‑stranded double‑stranded
B double‑stranded single‑stranded
C single‑stranded double‑stranded
D single‑stranded single‑stranded
(b) DNA acts as a template for the synthesis of messenger RNA.
(i) Which bond joins together mononucleotides in a strand of DNA and RNA?
(1)
A disulfide
B glycosidic
C peptide
D phosphodiester
2
*P78687A0228*
, (ii) Give three differences between the process of DNA replication and the
process of DNA transcription.
(3)
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
1 .. . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .......................................................................................................................................................... .. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................................ . . . . . . . . . . . . . . . . . . . .
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2 .. . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................................ . . . . . . . . . . . . . . . . . . . .
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3 .. . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................................ . . . . . . . . . . . . . . . . . . . .
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(Total for Question 1 = 6 marks)
3
*P78687A0328* Turn over
