CAIE A-Level Biology AS 2.4.2 Properties and Roles in Living Organisms Questions
Relate water properties such as cohesion, solvent action and thermal stability to their biological roles.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- AS
Exam points
- Explain how water properties support life, including cohesion, solvent action, thermal stability and density.
CAIE A-Level Biology AS 2.4.2 Properties and Roles in Living Organisms Questions question 1
[Maximum number: 1]
Hydrogen bonding explains many of the properties of water, including the high latent heat of vaporisation and high specific heat capacity.
For which processes in plants is hydrogen bonding in water important on hot sunny days?
1 preventing denaturation of enzymes in leaves
2 reducing water loss by evaporation
3 allowing leaves to cool down quickly at night
4 holding the column of water in xylem vessels together
A
1, 2, 3 and 4
B
1, 2 and 4 only
C
1, 3 and 4 only
D
2 and 3 only
B
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