Inglise keel unit 5 answers
R ref to uptake of nutrients max 2
(c) assume answer is about plant growth substances unless stated otherwise
treat refs to target, cells / tissue(s) and external stimuli as neutral
growth substances produced by, dividing cells / meristems;
ora hormones produced by, islets of Langerhans / alpha cells /
beta cells / endocrine gland / pancreas
growth substances move, in phloem / in xylem / from cell to cell;
ora hormones / named hormone(s), move in blood
growth substances usually produce a permanent change in the plant;
ora hormones produce reversible change in blood sugar
(GS) not homeostatic / no negative feedback; ora for hormones
R positive feedback A description of negative feedback
(GS) not protein / not polypeptide; ora insulin / glucagon, are proteins
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