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General Certificate of Education (A-level)
June 2012


Biology BIOL2
(Specification 2410)
Unit 2: The Variety of Living Organisms




Final



Mark Scheme

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Mark schemes are prepared by the Principal Examiner and considered, together with the relevant
questions, by a panel of subject teachers. This mark scheme includes any amendments made at the
standardisation events, which all examiners participate in and is the scheme, which was used by them
in this examination. The…

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Mark Scheme ­ General Certificate of Education (A-level) Biology ­ Unit 2: The Variety of Living
Organisms ­ June 2012




Question Marking Guidelines Marks Comments

1(a)(i) Diffusion; 1 Ignore references to
structures, membrane
components etc
Allow simple diffusion
Reject facilitated diffusion

1(a)(ii) 1. (Thin / flat body) so short distance…

Page 4

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Mark Scheme ­ General Certificate of Education (A-level) Biology ­ Unit 2: The Variety of Living
Organisms ­ June 2012




Question Marking Guidelines Marks Comments

2(a) 2 of the following pairs: 4 max Mark for explanation must be
paired with correct change in
1. Larger leaves;
structure
2. Photosynthesis;
Accept…

Page 5

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Mark Scheme ­ General Certificate of Education (A-level) Biology ­ Unit 2: The Variety of Living
Organisms ­ June 2012



Question Marking Guidelines Marks Comments

3(a)(i) /Beta glucose; 1 Accept b / B
Reject any reference
to alpha/

3(a)(ii) Glycosidic; 1 Reject references to
(1-4) glycosidic
bond, but allow beta…

Page 6

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Mark Scheme ­ General Certificate of Education (A-level) Biology ­ Unit 2: The Variety of Living
Organisms ­ June 2012




Question Marking Guidelines Marks Comments

4(a) 1. Growth / increase in cell number; 2 max Ignore growth of cells
2. Replace cells / repair tissue / organs Ignore repair cells…

Page 7

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Mark Scheme ­ General Certificate of Education (A-level) Biology ­ Unit 2: The Variety of Living
Organisms ­ June 2012




Question Marking Guidelines Marks Comments

5(a)(i) Repeating units / nucleotides / monomer 1 Allow more than one, but
/molecules; reject two

5(a)(ii) 1. C = hydrogen bonds; 3
2. D…

Page 8

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Mark Scheme ­ General Certificate of Education (A-level) Biology ­ Unit 2: The Variety of Living
Organisms ­ June 2012




Question Marking Guidelines Marks Comments

6(a)(i) Kingdom / phylum / class; 1 Accept Animalia /animal
kingdom / Chordata /
Chordates / Aves
Allow phonetic spelling

6(a)(ii) Family; 1

6(b)(i) 1.…

Page 9

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Mark Scheme ­ General Certificate of Education (A-level) Biology ­ Unit 2: The Variety of Living
Organisms ­ June 2012




Question Marking Guidelines Marks Comments

7(a) Removes bias; 1

7(b)(i) 1. 1.28 / 1.29 / 1.285 / 1.3;; 2 1. Ignore more than 3dp
2. Answer incorrect but shows clear…

Page 10

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Mark Scheme ­ General Certificate of Education (A-level) Biology ­ Unit 2: The Variety of Living
Organisms ­ June 2012



Question Marking Guidelines Marks Comments

8(a)(i) 1. Stomata open; 3 max Allow converse
2. Transpiration highest around mid-
day;
3. Middle of day warmer / lighter;
3. Allow 'Sun is…

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