Which one of the following vitamins contains a metal atom?

In metabolic processes,the energy obtained by the cell is immediately stored in which form?

We commonly call $ATP$ as the energy currency of the cell. Can you think of some other energy carriers present in a cell? Name any two.

Vitamin $M$ is

Match the following columns:

Column $I$	Column $II$
$(a)$ Fructose	$(p)$ Respiratory substrate
$(b)$ Glucose	$(q)$ Found in fruit juices
$(c)$ Starch	$(r)$ Responsible for sweetness of milk
$(d)$ Galactose	$(s)$ Stored food in plants

What is the number of covalent bonds and hydrogen bonds in a single molecule of water,respectively?