This comprehensive review session focuses on dissecting past biology exam papers to enhance understanding and boost exam performance. During the session, each question is analyzed in detail, covering the key concepts and methodologies required to answer effectively. We will:Break Down Complex Quest...
Please check the examination details below before entering your candidate jnformation
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel
Level 3 GCE
Biology A (Salters Nuffield)
Advanced
PAPER 1 : The Natural Environment and
Species Survival
You must have:
Calculator, HB pencil, ruler
lnstructions
o Use black inkcr ball-point pen.
r Fill in the boxes at the top of this page with your name,
centre number and candidate number.
a Answer all questions.
o Show your working in any calculation questions and include units in your answer
where appropriate.
o Answer the questions in the spaces provided
- there may be more space than you need"
lnformation
o The total mark for this paper is 100.
a The marks for each question are shown in brackets
- use this as a guide as to how much time to spend on each question.
o You may use a scientific calculator.
o ln questions rnarked 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
a Read each question carefully before you start to answer it.
a Try to answer every question.
I Check your ans\,rers if you have tlme at the end.
a Good luck with your examination.
Turn over
Some questions must be answered with a cross in a box X. lf you change your mind about an r,J,
answer, put a line through the box& and then markyour new answer with a <ross X. ''tI
-,#
Climate change has been linked to the release of carbon dioxide from some power stations.
(a) The main reason that carbon dioxide acts as a greenhouse gas is because it I tt,
Ca, lv^ir5 +he 1e tyra,t i5 re{\ettcJ br eAirln .YP
R A ahsorbs infrared radiation reflected by the surface of the Earth v*,
n B absorbs ultraviolet radiation reflected by the surface of the Earth X
il C reflects inlrareA radiation absorbed tiy the surface of the Earth /,a
n D reflects ultraviolet radiation absorbed by the Earth's atmosphere
{b) Name the plant organelle
= that fixes carbon dioxide from the atmosphere.
pla5\
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(c) Net primary productivity (NPP) is a measlrre of the increase in biomass of a plant.
.iJ
Explain why respiration affects the production of biomass.
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, (d) Some power stations burn wo*d chips inrtead of forsilfuels to produce *lectrieity.
The photcgraph shows wcod chips at a power station.
o Mr. Amarin Jitnathum/Shutterstock
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It is thcught that burning wood chips is more beneficial to the environment
because in the long term it does not add carbon dioxide to the atmosphere.
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Explain why burning wood chips does not increase carbon dioxide to the
atmosphere in the lcng term.
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