4BI0 1B Que 20130523
Write your name here
Surname
Other names
Edexcel Certificate
Edexcel
International GCSE
Centre Number
Candidate Number
Biology
Unit: KBI0/4BI0
Science (Double Award) KSC0/4SC0
Paper: 1B
Thursday 23 May 2013 – Morning
Time: 2 hours
Paper Reference
KBI0/1B 4BI0/1B
KSC0/1B 4SC0/1B
You must have:
Ruler
Calculator
Total Marks
Instructions
black ink or ball-point pen. t Use in the boxes at the top of this page with your name, t Fill centre number and candidate number. all questions. t Answer the questions in the spaces provided t Answer
– there may be more space than you need. t Show all the steps in any calculations and state the units.
Information
total mark for this paper is 120. t The marks for each question are shown in brackets t The
– use this as a guide as to how much time to spend on each question.
Advice
Read each question carefully before you start to answer it. t Keep on the time. t Write anyoureyeanswers and in good English. t Try to answer everyneatly t Check your answersquestion. if you have time at the end. t Turn over
P41552A
©2013 Pearson Education Ltd.
1/1/1/1/1/
*P41552A0128*
Answer ALL questions.
1 The diagram shows part of a food web in an oak forest.
blue jay tick beetle ant squirrel
mouse caterpillar deer
oak
(a) Use the information in the food web to complete the statements in the table.
The first one has been done for you.
(4)
Statement the number of animals is
Number
8
the number of producers is the number of herbivores is the number of secondary consumers is the number of food chains is
2
*P41552A0228*
(b) (i) What effect would a decrease in the population size of caterpillars have on the population size of blue jays?
(1)
. . . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...........
Surname
Other names
Edexcel Certificate
Edexcel
International GCSE
Centre Number
Candidate Number
Biology
Unit: KBI0/4BI0
Science (Double Award) KSC0/4SC0
Paper: 1B
Thursday 23 May 2013 – Morning
Time: 2 hours
Paper Reference
KBI0/1B 4BI0/1B
KSC0/1B 4SC0/1B
You must have:
Ruler
Calculator
Total Marks
Instructions
black ink or ball-point pen. t Use in the boxes at the top of this page with your name, t Fill centre number and candidate number. all questions. t Answer the questions in the spaces provided t Answer
– there may be more space than you need. t Show all the steps in any calculations and state the units.
Information
total mark for this paper is 120. t The marks for each question are shown in brackets t The
– use this as a guide as to how much time to spend on each question.
Advice
Read each question carefully before you start to answer it. t Keep on the time. t Write anyoureyeanswers and in good English. t Try to answer everyneatly t Check your answersquestion. if you have time at the end. t Turn over
P41552A
©2013 Pearson Education Ltd.
1/1/1/1/1/
*P41552A0128*
Answer ALL questions.
1 The diagram shows part of a food web in an oak forest.
blue jay tick beetle ant squirrel
mouse caterpillar deer
oak
(a) Use the information in the food web to complete the statements in the table.
The first one has been done for you.
(4)
Statement the number of animals is
Number
8
the number of producers is the number of herbivores is the number of secondary consumers is the number of food chains is
2
*P41552A0228*
(b) (i) What effect would a decrease in the population size of caterpillars have on the population size of blue jays?
(1)
. . . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...........