Which of the following statements is correct

Options

A. Chemically considering digestion is basically hydrolysis
B. In reference to biological role, `Ca^(2+)` ions are important in generating the right electode potential across cell membrane
C. Sucrose in water is dextrorotatory , `[alpha]_(D) = + 66.4^(@)`. When boiled with di `HCl` the solution becomes laevorotatory, `[alpha]_(D) = - 39.9^(@)`.
D. All of these

Answer

D

Explanation

During digestion large molecules are hydrolysed to yield smaller molecules. For example, when we eat proteins they are hydrolysed to yield amino acis.
On hydrolysis with dilute acids or enzyme invertase cane sugar (sucrose) gives equimolar mixture of `D - (+) -` glucose and `D - (-) -` fructose.