Please enable JavaScript.
Coggle requires JavaScript to display documents.
Water - Coggle Diagram
Water
Polarity of water molecule
Polar molecules
Bipolar
Hydrogen is partially positive charged (δ+).
Oxygen partially negative charge (δ–)
Hydrogen bonds
Water to act as a
universal solven
t
Importance of polarity of water in cells
Allow solutes such as glucose and electrolytes to be transported through the plasma membranes into cells for biochemical reactions
Specific heat capacity
High specific heat capacity of 4.2 kJ kg-1 °C-1.
4.2 kJ of heat energy is required to raise the temperature of one kilogram of water by 1°C
Importance of high specific heat capacity
Maintain the body temperature of organisms
Sudden rise of temperature will denature the protein and the function of cell
Sudden reduction of body temperature will disturb the normal functions of body cells
Cohesive and adhesive forces
Cohesive force
Water molecules are attached to each others
Adhesive force
Water molecules are attached to other surfaces.
Importance in cells
Produce
capillary action
Plant use capillary action to
transport water and minerals in xylems vessels up in the stem of the plants
Adhesive force
moves the water up along the surface of the inner wall of xylem vessel.
Cohesive force
ensures water column does not break off when the water moves up the xylem vessels