A person had roti and dal for his lunch. Trace the changes in those during its passage through the alimentary canal. Answer: ... The saliva contains an enzyme salivary amylase (ptyalin) which converts starch in roti into maltose, isomaltose and small dextrins called a-dextrin.
it is a term that qualitatively describes the ability of a substance to resist changes in its state of motion and while while mass gives a quantitative value for inertia.