Biology · Oct / Nov 2022 · Paper 41 · Question 1
0610
As printed in the paper
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1(a)(i)[1]
mechanical / physical, digestion ;
1(a)(ii)[1]
enamel ;
1(a)(iii)[3]
any three from:
sugar / food / plaque, left on teeth ;
respiration (of sugar) by bacteria ;
produce (lactic) acid ;
dissolves, enamel / dentine / AW ;
AVP ;
1(b)(i)[4]
Orcinus orca
E
Myrmecophaga tridactyla
F
Cervus elephus
G
Go to 5
Macropus rufus
B
Equus ferus
A
Lemur catta
C
Pteropus niger
D
;;;;
1(b)(ii)[2]
any two from:
double circulation ;
four-chambered heart ;
lungs / any named part of lungs ;
diaphragm ;
red blood cells without nuclei ;
AVP ;
1(b)(iii)[1]
vertebrates ;
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