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Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3
GCE
Wednesday 7 June 2023 9BN0/01
Afternoon (Time: 2 Pape
hours) reference
r
Biology A (Salters Nuffield)
Advanced
PAPER 1: The Natural Environment and Species
Survival
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
centre number and candidate number.
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name,
Answer
all your working out in calculations and include units where
the questions in the spacesspace than you need.
questions.
appropriate. – there may be more
Information
provided
•• The total mark for this paper is 100.
The marks for each question are shown in
• question.
– use this as a guide as to how much time to spend on each
• In questions marked with an asterisk (*), marks will be awarded for your ability to
You may use a scientific calculator.
brackets
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.
•• Check answer
Try to every
your answers if you have time at the end.
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,
, Answer ALL questions.
Some questions must be answered with a cross in a box . If you
AREA
DO NOT WRITE IN THIS
change your mind about an answer, put a line through the box and
then mark your new answer with a cross .
1 Homo sapiens is the only living species of the genus Homo. Over 100 000 years
ago, Homo neanderthalensis, a species closely related to modern humans, lived
with other Homo species in the same habitat.
(a) Which of the following is the correct definition of the term habitat?
(1)
A a group of organisms of different species living in the same area
B a group of organisms of the same species living in the same
area
C a place where an organism lives
D the role of an organism
(b) A fossil bone discovered in China is thought to be from a new species,
Homo longi.
AREA
DO NOT WRITE IN THIS
(i) Samples of DNA from this bone and bones from other Homo species
can be amplified using PCR.
Describe how these amplified samples of DNA can be prepared for
analysis using gel electrophoresis. (3)
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