Question

Which of the following is not a function of water in cell?
A) It provides energy for chemical reaction.
B) It acts as a solvent.
C) It provides a medium for chemical reaction.
D) It releases hydrogen ions on ionisation.

Answer 1

Water is one of the most important resources on the planet. Without water, life cannot exist. Water has lots of unique features that make it a valuable resource. Some features of water are listed below –
• Water is a very good solvent and it has the power to dissolve many substances.
• The boiling and freezing point of water make it easily available in all three states - solid,
liquid, and gaseous.

Step by step answer: Water is very essential/important in a living cell almost all living cells require water for proper functioning, but it does not provide energy for the chemical reaction. It can release hydrogen ions but does not provide energy. ATP provides energy in the living system. ATP is a universal energy currency. In fact, energy is required to the breakwater, because otherwise, water is a very stable molecule and has the capacity to form hydrogen bonds.
A) It provides energy for chemical reaction – Water does not provide energy for chemical reactions so it is not the function of water. It cannot provide energy so it is the correct answer.
B) It acts as a solvent – Water acts as a solvent so it is the function of water.
C) It provides a medium for chemical reaction – Water provides a medium for chemical reaction, thus it is also a function of water.
D) It releases hydrogen ions on ionization – Water releases hydrogen ions so it is also a function of water.
Hence option A is correct.

Note: The importance of water in living organisms are:
• Water is the medium by which all essential vitamins and minerals are carried in the bodies of living organisms.
• Water also plays an important role in facilitating the work of enzymes in living organisms
• Water helps in maintaining body temperatures in plants and animals.
• Water is an integral part of photosynthesis. Without it, autotrophic plants would not be able to produce their own food.