Biology · Oct / Nov 2020 · Paper 41 · Question 1
0610
As printed in the paper
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Water is an essential molecule for life.
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1(a)[2]
osmosis ;
solvent ;
1(b)[3]
drawing with:
arrow showing water movement into cell ;
max. two from:
no space between cell membrane and cell wall ;
cell wall, slightly bent outwards / straight ;
vacuole larger in proportion than in Fig 1.1 ;
1(c)[3]
wilting ;
lack of turgor pressure (at the end of the week) ; ora
no longer a push against cell wall / AW ; ora
(mesophyll) cells not providing support / cell collapses / AW ;
(lack of water means cells become) flaccid / plasmolyse ;
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