2.1.2a) Structure & function of water in living organisms

Question 1

Polar molecule

Answer 1

Electrons shared unevenly (covalent)

Question 2

Adhesion

Answer 2

Molecules stay together

Question 3

Cohesion

Answer 3

Water & other polar molecules

Question 4

Capillary action

Answer 4

Cohesion happens due to water being attached to the glass then adhesion happens & other polar molecules follow as 1 atom is already attached to the glass
The cohesion happens as the atoms have a slightly negative or positive charge (polar molecule) is attached to the other polar molecule
e.g. root hair cell & stem to transport water for photosynthesis

Question 5

4 Hydrogen bonds

Answer 5

Strength

Question 6

3 Hydrogen bonds

Answer 6

Responsible for surface tension- compensate for 1 less bond
Stronger
Cohesive forces between molecules
No neighbouring molecules- stronger attractive forces