Biology · Oct / Nov 2025 · Paper 42 · Question 5

any three from:

1

less land required / AW, (than extensive farming) ;

2

(so) fewer trees cut down / less deforestation ;

3

more land available for named use ;

4

improved yield ;

5

more efficient named farming practice ;

6

cheaper (named), products / food / meat / milk ;

7

idea of consistent, quality / growth, of product ;

8

increased food security ;

9

(increased) profits (for farmer) ;

10 AVP ;

any two from:

treat / prevent, (spread of) bacterial, disease / infection ;

caused by close proximity / overcrowding / AW ;

AVP ;

D and F ;

54 ;;;

any four from:

1

ref. to (resistance due to) mutation ;

2

antibiotics kill non-resistant bacteria / resistant bacteria survive ; 3

(resistant bacteria / bacteria that survive the antibiotic) reproduce ; 4

passing on alleles (for resistance) ;

5

idea that over time this increases, the proportion of population of bacteria that is resistant / frequency of resistant allele ;

6

ref. to natural selection ;

7

AVP ;