Inglise keel unit 5 answers
A named examples
growth;
repair;
AVP; e.g. detail of any point) 3 max max 4
(c) (nitrifying bacteria) help/increase, plant growth;
bacteria make nitrate (available);
plants need nitrate;
for, amino acids/protein/chlorophyll/DNA;
for, new cells/mitosis/new leaves; max 2
(d) (i) chemoheterotrophic; 1
(ii) photoautotrophic; 1
(e) (i) carbon; R CO2 1
(ii) Desulfovibrio, uses sulphur (S)/makes hydrogen sulphide (H2S);
green sulphur bacteria, use H2S/make S;
colourless sulphur bacteria use H2S; max 2
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