Edexcel
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 15 May 2023
Morning (Time: 1 hour 30
minutes)
Paper
referenc
e
8BN0/01
Biology A (Salters Nuffield)
⬟ ⬟
Advanced Subsidiary
PAPER 1: Lifestyle, Transport, Genes and Health
You must have:
Scientific calculator, HB pencil, Total Marks
ruler
, Instructions
• Use black ink or ball-point pen.
• Fill in the boxes at the top of this page with
centre number and candidate number.
• Answer all
your name,
• Show all your working out in calculations and include units where
• Answer the questions in the spaces
appropriate.
questions.
– there may be more space than you need.
provided
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.
• ability to structure
In questions marked with an asterisk (*), marks will be awarded for your
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
• Check your answers if you have time at the end.
Turn over
question.
P71922A
©2023 Pearson Education
Ltd. N:1/1/1/1/1/
, 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 DNA nucleotide.
O
(a) (i) Complete the diagram to show how a complementary pair of
nucleotides would appear in a DNA molecule.
(2)
(ii) Name two bonds formed between nucleotides in the
process of DNA replication.
(2)
1 . ...... ............. ... .......... ... ............ ............. ............. ... .......... ... ............. ............. ... ........ ........... ... .......... ... ............. ............. ... .......... ... ............. ............. ... .......... ... ............. ... ... ... ......
......
2 . ...... ............. ... .......... ... ............ ............. ............. ... .......... ... ............. ............. ... ........ ........... ... .......... ... ............. ............. ... .......... ... ............. ............. ... .......... ... ............. ... ... ... ......
......
, (b) The diagram shows the structure of a DNA nucleotide and a modified
nucleotide called CeNA.
O
DNA nucleotide CeNA nucleotide
Give one difference in the structure of these two
molecules. (1)
......... ... ............. ......................... ... .......... ... ............. ............. ... .......... ... ............. ...... ........ ... .......... ... ............. ............. ... .......... ... ............. ............. ... .......... ... ............. ...... ................ ..
.....
......... ... ............. ......................... ... .......... ... ............. ............. ... .......... ... ............. ...... ........ ... .......... ... ............. ............. ... .......... ... ............. ............. ... .......... ... ............. ...... ................ ..
.....
......... ... ............. ......................... ... .......... ... ............. ............. ... .......... ... ............. ...... ........ ... .......... ... ............. ............. ... .......... ... ............. ............. ... .......... ... ............. ...... ................ ..
.....
(Total for Question 1 = 5 marks)
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 15 May 2023
Morning (Time: 1 hour 30
minutes)
Paper
referenc
e
8BN0/01
Biology A (Salters Nuffield)
⬟ ⬟
Advanced Subsidiary
PAPER 1: Lifestyle, Transport, Genes and Health
You must have:
Scientific calculator, HB pencil, Total Marks
ruler
, Instructions
• Use black ink or ball-point pen.
• Fill in the boxes at the top of this page with
centre number and candidate number.
• Answer all
your name,
• Show all your working out in calculations and include units where
• Answer the questions in the spaces
appropriate.
questions.
– there may be more space than you need.
provided
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.
• ability to structure
In questions marked with an asterisk (*), marks will be awarded for your
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
• Check your answers if you have time at the end.
Turn over
question.
P71922A
©2023 Pearson Education
Ltd. N:1/1/1/1/1/
, 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 DNA nucleotide.
O
(a) (i) Complete the diagram to show how a complementary pair of
nucleotides would appear in a DNA molecule.
(2)
(ii) Name two bonds formed between nucleotides in the
process of DNA replication.
(2)
1 . ...... ............. ... .......... ... ............ ............. ............. ... .......... ... ............. ............. ... ........ ........... ... .......... ... ............. ............. ... .......... ... ............. ............. ... .......... ... ............. ... ... ... ......
......
2 . ...... ............. ... .......... ... ............ ............. ............. ... .......... ... ............. ............. ... ........ ........... ... .......... ... ............. ............. ... .......... ... ............. ............. ... .......... ... ............. ... ... ... ......
......
, (b) The diagram shows the structure of a DNA nucleotide and a modified
nucleotide called CeNA.
O
DNA nucleotide CeNA nucleotide
Give one difference in the structure of these two
molecules. (1)
......... ... ............. ......................... ... .......... ... ............. ............. ... .......... ... ............. ...... ........ ... .......... ... ............. ............. ... .......... ... ............. ............. ... .......... ... ............. ...... ................ ..
.....
......... ... ............. ......................... ... .......... ... ............. ............. ... .......... ... ............. ...... ........ ... .......... ... ............. ............. ... .......... ... ............. ............. ... .......... ... ............. ...... ................ ..
.....
......... ... ............. ......................... ... .......... ... ............. ............. ... .......... ... ............. ...... ........ ... .......... ... ............. ............. ... .......... ... ............. ............. ... .......... ... ............. ...... ................ ..
.....
(Total for Question 1 = 5 marks)
