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4BI0 1B La cual 20130523

 4BI0 1B Que 20130523 Essay

Publish your name below

Surname

Various other names

Edexcel Certificate

Edexcel

International GCSE

Centre Quantity

Candidate Quantity

Biology

Product: KBI0/4BI0

Research (Double Award) KSC0/4SC0

Paper: 1B

Thurs night 23 May possibly 2013 – Morning

Time: 2 hours

Conventional paper Reference

KBI0/1B 4BI0/1B

KSC0/1B 4SC0/1B

You must have:

Ruler

Calculator

Total Signifies

Instructions

dark ink or perhaps ball-point coop.

t Employ

in the bins at the top of this site with your identity,

t Complete

centre number and prospect number.

all questions.

t Answer

the questions in the spots provided

t Answer

– there may be more room than you will need.

t Show all the measures in any calculations and state the products.

Information

total mark for this paper is usually 120.

to The

represents for each problem are displayed in brackets

t The

– make use of this as a information as to just how much time to invest in each question.

Advice

Browse each query carefully before you begin to answer it.

t Maintain

on the period.

t Create anyoureyeanswers

and in good British.

t Make an effort to answer everyneatly

t Check your answersquestion.

in case you have time by the end.

t

Start

P41552A

©2013 Pearson Education Ltd.

1/1/1/1/1/

*P41552A0128*

Solution ALL questions.

1 The diagram shows a part of a foodstuff web within an oak forest.

blue the author

tick

beetle

ant

squirrel

mouse

caterpillar

deer

maple

(a) Utilize the information inside the food internet to finish the statements in the stand. The first one have been done for yourself.

(4)

Declaration

the number of pets is

Number

8

the amount of producers is

the number of herbivores is

the amount of secondary customers is

the quantity of food restaurants is

2

*P41552A0228*

(b) (i) What effect would a decrease in the population scale caterpillars possess on the population size of blue jays?

(1)

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

(ii) What is meant by the term human population?

(1)

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

(c) The tick feeds on deer by sucking their particular blood.

Term two distinct molecules that are found in the blood of deer that the tick could feed on.

(2)

1 ............................................................................................................................................................................................................................................................................... 2 ............................................................................................................................................................................................................................................................................... (Total for Query 1 = 8 marks)

*P41552A0328*

several

Turn over

2 The diagrams show sections through an artery and a vein.

muscle mass

single part of skin cells

elastic tissues

muscle tissue

sole layer of cells

elastic tissue

(a) Use the data in the layouts and your own knowledge to provide three ways when the structure of an artery is different from the structure of a vein. (3)

1 ......................................................

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