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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 meeting attended by all examiners and is the scheme
which was used by them in this examination. The standardisation meeting ensures that the
mark scheme covers the candidates' responses to questions and that every examiner
understands and applies it in the same correct way.…read more

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Applied Science - AQA GCE Mark Scheme 2007 January series
Question 1
(a) Uses (conductive) gel (1)(AO1) 1
Any two of: (one mark each) (2)(AO2)
· Interference
(b) 2
· Movement produces electrical impulses
· Electrical impulses in nerves/muscles
(c)(i) Theta (1)(AO1) 1
(ii) Mental activity (1)(AO1) 1
(iii) Deep sleep (1)(AO1) 1
Total Mark: 6
Question 2
(a)(i) One mark for each correct label (4)(AO1) 4
Rotates (1)(AO2)
Reduce number of electrons
(ii) 2
Hitting the same point (1)(AO1)
Other valid answers accepted
Any…read more

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Applied Science - AQA GCE Mark Scheme 2007 January series
Question 3
Time taken for half the radioactive
(a)(i) 1
Nuclei present to decay (or wtte) (1)(AO1)
0.125g (2)(AO2)
1 compensation mark for either:
(ii) 2
· 4 half lives
· correct use of iterative method
Any two clear points e.g.…read more

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Applied Science - AQA GCE Mark Scheme 2007 January series
Question 4
1.35 Allow 1.3 ­ 1.…read more

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Applied Science - AQA GCE Mark Scheme 2007 January series
Question 6
(a)(i) Above normal (1)(AO1) 1
(145) Systolic/in systole (or wtte) (1)(AO1)
(ii) 2
(90) Diastolic/in diastole (or wtte) (1)(AO1)
Any suitable advantage for 1 mark e.g. (1)(AO1)
· Less chance of infection
Any suitable disadvantage for 1 mark e.g. (1)(AO1)
(b) · Less accurate 2
· If using invasive method can remove blood for other
purposes without having to put another line into the
artery.…read more

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