Year 11 Biology December MS week 3
5. (a) plots all correct 2
allow one mark for 1 / 2 correct plots
all labels present and correct 1
(in correct proportions)
(b) oxygen 1
carbon dioxide 1
(c) respiration 1
do not accept anaerobic respiration [6]
6. (a) 0.62 to 0.64 2
correct figures from graph 8.4 and 2.2 but no answer /
wrong answer gains 1 mark
or wrong figures from graph subtracted and divided by
10 gains 1 mark
(b) (oxygen for) aerobic respiration 1
more energy available owtte 1
allow more energy released
allow converse
or no / less harmful products
or no ethanol / alcohol [4]
[8]
