B1 Exam Paper

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Edexcel GCSE

Biology/Science
Unit B1: Influences on Life
Foundation Tier
Tuesday 15 May 2012 – Morning
Time: 1 hour
You must have:
Calculator, ruler

Paper Reference

5BI1F/01
Total Marks

Instructions
Use black ink or ball-point pen.
Fill in the boxes at the top of this page with your name,
centre number and candidate number.
Answer all questions.
Answer the questions in the spaces provided
– there may be more space than you need.

Information
The total mark for this paper is 60.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question. Questions labelled with an asterisk (*) are ones where the quality of your written communication will be assessed
– you should take particular care with your spelling, punctuation and grammar, as well as the clarity of expression, on these questions.

Advice
Read each question carefully before you start to answer it.
Keep an eye on the time.
Try to answer every question.
Check your answers if you have time at the end.
Turn over

P40238A
©2012 Pearson Education Ltd.

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Answer ALL questions.
Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then mark your new answer with a cross . Classification
1 (a) Camels belong to the phylum Chordata.
The drawing shows a dromedary camel that has the binomial name Camelus dromedaries.

(i) Complete the sentence by putting a cross ( ) in the box next to your answer. The second part of the binomial name, dromedaries, refers to the (1)
A class
B genus
C order
D species
(ii) State one feature that all members of the phylum Chordata have in common. (1)
. . . . . . . . . . . . .................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............ ............................................................................................................................... .. . . . . . . . . . . . . . . . . . . . .

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

*P40238A0320*

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(iii) Members of the phylum Chordata can be further classified by how they regulate their body temperature.
Reptiles are poikilothermic and mammals are homeothermic.
Explain how reptiles and mammals regulate their body temperature. (2)
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