They are reactants because they are present before the reaction.
The word isotonic is used to refer to the solutions (two solutions) which have the same osmotic pressure in both sides of the semipermiable membrane. The condition allows the free movement of water across the membrane. However, this does not change the concentration of the solution across the membrane.
Hence, osmosis may not occur in this condition.
(ATP) is comprised of an adenine ring, a ribose sugar, and three phosphate groups.
The answer would be false because some organisms have a possibility at failing other things.
