Biology · Oct / Nov 2025 · Paper 42 · Question 1

the breakdown of food into smaller, pieces / AW ;

without chemical change (to the food molecules) ;

B ;

C ;

F ;

ref. to emulsification of fat ;

ref. to increased surface area (of fat) ;

(idea of increased surface area / more droplets) for, action of enzymes / action of lipase / chemical digestion ;

any two from:

incisor for, grabbing / piercing / cutting / tearing / slicing / biting / AW ; canine for, grabbing / piercing / cutting / tearing / slicing / biting / AW ; premolar for, grinding / chewing / crushing / AW ;

molar for, grinding / chewing / crushing / AW ;

X are microvilli ;

(X) increased / provides large, surface area for absorption (of nutrients) OR

(X) for, attachment of / release of / contains, enzymes / maltase ;

Y is the lacteal ;

(Y) absorption of, products of fat digestion / AW ;