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Pearson Edexcel Level 3 GCE Biology A Advanced PAPER 1: The Natural Environment and Species Survival june 2023 £12.70
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Pearson Edexcel Level 3 GCE Biology A Advanced PAPER 1: The Natural Environment and Species Survival june 2023

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

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  • January 11, 2024
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All documents for this subject (15)
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maxwellmarkm
Pearson Edexcel Level 3
GCE
9BN0/01
Wednesday 7 June 2023
 
Pape
r
Biology A (Salters Nuffield)
Advanced
PAPER 1: The Natural Environment and
Species Survival

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AREA
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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




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(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.

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, (ii) Explain how the results of this analysis would show whether Homo
longi is closely related to other Homo species.
(2)
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(Total for Question 1 = 6 marks)
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, 2 Human activities are affecting many habitats.
These activities can change the biodiversity of communities and populations




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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.




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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

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