Inglise keel unit 5 answers
5 reduced respiration in cells;
AVP; e.g. parts of brain accept reverse argument for all points 3 max
[3]
47. (i) control explained/AW; R control without explanationf 1
(ii) mean number of errors reduced in subsequent trials;
in all trials rats with phenserine had fewer errors/ora;
ref. paired data for 2 trials; 2 max
(iii) ref. trial and error;
ref. associative learning;
ref. operant conditioning;
escape is reward/reinforcer; 3 max
(iv) inhibits acetylcholinesterase;
effect on enzyme;
in synapses;
annaabi.ee 
