Microsoft Word libs task oosci 11 5090 12 2022

C 
iron and vitamin C 
brittle bones and bleeding gums
 
D 
iron and vitamin D 
too few red blood cells and deformed bones 
10
The diagram shows how food is processed in the human alimentary canal. 
food containing large, insoluble molecules enters the body
large pieces of food broken down to smaller pieces
large molecules broken down into
small, soluble molecules
small, soluble molecules
enter the blood
undigested food
leaves the body
small molecules taken 
up and used by cells
P
Q
R
S
T
Which row correctly identifies the named stages? 
absorption 
assimilation 
enzyme 
digestion 
A 
P 
S 
T 
B 
P 
S 
Q 
C 
S 
P 
Q 
D 
S 
T 
R 
11
Which function is 
not
carried out by the liver? 
A
breakdown of alcohol 
B
conversion of glycogen to glucose 
C
formation of urea 
D
secretion of digestive enzymes 

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6
© UCLES 2022 
5090/12/O/N/22 
12
Which statements about root hairs are correct? 
1 The cell membrane can allow movement of water and ions into the cell. 
2 The cell vacuole extends into the root hair. 
3 They are formed as an extension of the outer layer of root cells. 
A
1, 2 and 3 
B
1 and 2 only 
C
1 and 3 only 
D
2 and 3 only 
13
The table shows weather conditions in a field. 
Which row shows conditions that would cause a plant to wilt most rapidly? 
air temperature 
/
°
C 
humidity 
time of day 
wind speed 
/
km per hour