Which one of the following is generally applicable to polysaccharides?

Which of the following is a component found in the structure of $RNA$ and $ATP$?

In aqueous solution, glucose exists as:

Lactose on hydrolysis yields:

Starch,cellulose,glycogen,and chitin are polysaccharides. Match these with the following sources and write the correct pair for each:
$(a)$ Cotton fibre
$(b)$ Exoskeleton of cockroach
$(c)$ Liver
$(d)$ Peeled potato

Which of the following is not a carbohydrate?