Exam (elaborations)

edexcel biology ial unit 4

7 views 0 purchase

Course
Edexcel

Institution
Edexcel

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...

[Show more]

Preview 3 out of 29 pages

View example

Uploaded on June 24, 2024
Number of pages 29
Written in 2023/2024
Type Exam (elaborations)
Contains Questions & answers

edexcel
biology
ial
unit 4

CA$11.47

Added

Add to cart

Add to wishlist

100% satisfaction guarantee
Immediately available after payment
Both online and in PDF
No strings attached

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

P6545BA
(:,?021 Pedrrar iid!(atio) Ltd.
tilililt tl! ill|l ilff iltil ]ilt ililt ilfi ilil fiil ilfiI ilil ilil
1i1i1/li1i1t
I
P6s458A0132 Fearson
l_

, -l
'?

Ansutrer ALL quirstions.

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\
<l,loro 1" '-'

(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.
e1,

ReaOtra!tOn pvtA,.tce ;eneyqV. . ,fr,'
$r
a4
''" :r"-'
*ov the P.r-adretio-I;1

Iilllilil il ilffi lltll 1iltlllll ililtlIltilllfitil
P65458A0232 iltll ilil ll]

, (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
/ w-:.
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.
..#..
.":*".'l
Explain why burning wood chips does not increase carbon dioxide to the
atmosphere in the lcng term.
{

r-.t.: r: e.t1..
,..L; , \a o.q ol, . . c-.':.!.',
= :l ! ": . .c.t;: 7r otr' Pl.a Y) t 2
1 ....::....................

?,.y,..Q q...^.......... ..'i I ..i- .i..:,' ': 2 " ,:!..: :/.'.
,,.1 /Z ! r., I'
.. '.,;..i. .9.

.(4i.bo.!r (.. I t:'i,:
c,.t.c.4..i c, t.

5ip. *e.r r*?!pq5?A by. Pu.r n \?q
J- Ye-p ia se rh -
-o1m0ant 4A9qrbl,d Fy T| ?.,,I 5,
As f yec.i Abso.6 -o, irtt Larbon
-for phgIp5)lrihctts'
N -e-
yv f- rc e i fo lcDla(?
... ..t. .. .... .......

Cat a\ovvrt
5O n0 ne_t rn-qre45e ln co -"

Cavbon neqirA\

@ll"tOue,stign 1 = $ marks)

3
gllll
i lililllil ffi iilil ililt ililil illlfi lEiffilll iliiltffttlttl ilil Turn aver
t_ PS5458A0332

The benefits of buying summaries with Stuvia:

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

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

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 senushidinara. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$11.47. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

85169 documents were sold in the last 30 days

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

Start selling