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GCSE

Additional Science B J641
Gateway Science Suite
General Certificate of Secondary Education




Mark Schemes for the Units

June 2008




J641/MS/R/08

Oxford Cambridge and RSA Examinations

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OCR (Oxford, Cambridge and RSA Examinations) is a unitary awarding body, established by the
University of Cambridge Local Examinations Syndicate and the RSA Examinations Board in
January 1998. OCR provides a full range of GCSE, A level, GNVQ, Key Skills and other
qualifications for schools and colleges in the United…

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CONTENTS


GCSE Gateway Additional Science B J641



MARK SCHEMES FOR THE UNITS


Unit/Content Page

Mark Scheme Guidance 1

B623/01 Unit 1: Modules B3, C3 and P3 Foundation Tier 2

B623/02 Unit 1: Modules B3, C3 and P3 Higher Tier 11

B624/01 Unit 2: Modules B4, C4 and P4 Foundation Tier…

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Mark Scheme Guidance


Abbreviations, annotations and conventions used in the detailed Mark Scheme.

/ = alternative and acceptable answers for the same marking point
(1) = separates marking points
not = answers which are not worthy of credit
reject = answers which are not worthy of credit
ignore = statements…

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B623/01 Mark Scheme June 2008


B623/01 Unit 1: Modules B3, C3 and P3 Foundation Tier

Question Expected Answers Marks Additional Guidance
1 a i X in nucleus (1) 1 centre of X inside nucleus
allow correct label line touching or inside nucleus
ii (cell) membrane (1) 1 more than one…

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B623/01 Mark Scheme June 2008

Question Expected Answers Marks Additional Guidance
2 a lungs (1) 2 allow air sacs / alveoli (1)

(small) intestine / digestive system / alimentary allow gut
canal (1) not large intestine
not stomach
allow capillaries for either to max 1
b i pump blood (1)…

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B623/01 Mark Scheme June 2008

Question Expected Answers Marks Additional Guidance
3 a i leaf (1) 1 allow higher level answer stomata (1)
ii diffusion (1) 1 not photosynthesis / respiration
more than one answer (0)
b i runners (1) 2 allow descriptions / drawings and labels (1)
(produce) plantlets…

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B623/01 Mark Scheme June 2008

· All formulae must be totally correct e.g. CO2 and not CO2 / CO2 ; SO42- and not SO42-, So42-, SO42- (any subscripts must be at least marginally
smaller than the atomic symbol and superscripts must be at least slightly above the symbol)
· Symbols…

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B623/01 Mark Scheme June 2008

Question Expected Answers Marks Additional Guidance
6 a any two from: 2 ignore good conductor of electricity
high melting point (1) allow coloured compounds
high boiling point (1) ignore solid / waterproof
strong (1)
malleable (1) ignore mouldable / magnetic / durable /
ductile (1)…

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B623/01 Mark Scheme June 2008

Question Expected Answers Marks Additional Guidance
7 a 3 / three (1) 1
b 3 / three (1) 1
Total 2

8 a copper ­ blue and 1 both required for 1 mark
iron(II) - light green (1)
b i limewater / calcium hydroxide solution…

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