The tripeptide is written as Glycyl-Alanyl-Glycine. What is its correct structure?

The number of six-membered and five-membered rings present in norethindrone (a synthetic progesterone) are respectively:

Match Column-$I$ with Column-$II$ and select the correct option.

Column-$I$	Column-$II$
$(i)$ Antiberiberi factor	$(A)$ Vitamin $C$
$(ii)$ Pancreas	$(B)$ Glycerides
$(iii)$ Palm oil	$(C)$ Vitamin $B_1$
$(iv)$ $L(+)$-Ascorbic acid	$(D)$ Insulin

Assertion : $DNA$ as well as $RNA$ molecules are found in the nucleus of a cell.
Reason : On heating,the enzymes do not lose their specific activity.

Oxidation of glucose is one of the most important reactions in a living cell. What is the number of $ATP$ molecules generated in cells from one molecule of glucose?

Which element among the following is not present in saccharin?