100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Pearson Edexcel Level 3 GCE Biology A Advanced PAPER 1 The Natural Environment and Species Survival June 2023 £12.35   Add to cart
Quickly navigate to
Preview
  2.  
  3. PEARSON (PEARSON)
  4.  
  5. Biology A
  6.  
  7. Biology A

Exam (elaborations)

Pearson Edexcel Level 3 GCE Biology A Advanced PAPER 1 The Natural Environment and Species Survival June 2023
 3 views  0 purchase

Pearson Edexcel Level 3 GCE Biology A Advanced PAPER 1 The Natural Environment and Species Survival June 2023

Preview 4 out of 37  pages

Document information

  • January 6, 2024
  • 37
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

Subjects

  • june 2023
  • pearson edexcel level 3 gce biology a
  • paper 1 the natural environment and species surviv

Written for

All documents for this subject (31)

Seller

avatar-seller
diasmarkm

Reviews received

Content preview

b




Candidate surname Other names


Centre Number Candidate Number



Pearson Edexcel Level 3
GCE
Wednesday 7 June 2023
Pape
9BN0/01
Afternoon (Time: 2
r
reference
hours)
 
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.
•• Answer
name,
all
Show all your working out in calculations and include units where
• appropriate. – there may
Answer the questions
questions.
be spaces
in the more space than you need.

Information
provided
•• The total mark for this paper is 100.
The marks for each question are shown in
– use this as a guide as to how much time to spend on each
• question. You may use a scientific calculator.
• brackets
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
Check your answers if you have time at the end.
Turn over
question.




1

, 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




AREA
DO NOT WRITE IN THIS
(b) A fossil bone discovered in China is thought to be from a new species,
Homo longi.
(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 (3)
analysis using gel electrophoresis.

. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... . . .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................



. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. . . .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................



. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................



. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................



. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................
AREA
DO NOT WRITE IN THIS


. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................



. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................



. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................



. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... . . .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................




2


, (ii) Explain how the results of this analysis would show whether Homo
longi is closely related to other Homo species.
(2)
DO NOT WRITE IN THIS




. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................



. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................



. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. .. . .. .. .. .. ... .. .. .. .. .. .. .. .. ......................
AREA




. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. . . .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................



. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................



. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. ..
. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. .. .. ......................


(Total for Question 1 = 6 marks)
DO NOT WRITE IN THIS
AREA
DO NOT WRITE IN THIS
AREA




3
 Turn
over

, 2 Human activities are affecting many habitats.
These activities can change the biodiversity of communities and populations




AREA
DO NOT WRITE IN THIS
within a habitat.
(a) Which of the following describes biodiversity within a habitat?
(1)
A the number of different alleles and the number of the same
species
B the number of different species and the number of different
alleles
C the number of different species and the number of the same
alleles
D the number of the same alleles and the number of the same
species


(b) Brown Moss is a site of special scientific interest. It is an area containing
shallow ponds, inhabited by birds and rare plants.
The biodiversity of plants growing in two ponds, A and B, at Brown Moss
was studied. The table includes data collected from the two ponds.




AREA
DO NOT WRITE IN THIS
Number (n) n(n–1) for Number (n) n(n–1) for
Species in pond A pond A in pond B pond B

Azolla filiculoides 5 20 0 0

Lemna minuta 29 812 0 0

Lemna trisulca 50 2 450 0 0

Alisma plantago-aquatica 2 2 0 0

Alopecurus aequalis 11 110 0 0

Carex pseudocyperus 2 2 0 0

Equisetum fluviatile 0 0 71 4 970

Juncus effusus 0 0 60 3 540

Menyanthes trifoliata 16 240 0 0

Polygonum amphibium 0 0 25 600

Ranunculus circinatus 13 0 0

Sparganium erectum 3 6 0 0

Typha latifolia 5 20 0 0

Total 156 9 110


4


The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller diasmarkm. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £12.35. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

83662 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now

Start selling
£12.35
  • (0)
  Add to cart