How much energy is liberated when $25$ $ATP$ molecules are hydrolysed to $ADP$ (in $\text{ Kcal}$)?

Which of the following is not used in biochemical processes?

Which of the following options correctly matches the vitamin,its property,and the deficiency disease caused by it?

Which vitamin gets destroyed by heating?

Which is the common and immediate source of energy for cellular processes?

Assertion $A$: Living organisms obtain various molecules and elements from their environment.
Reason $R$: Living organisms synthesize components essential for their body.
Which option is correct for Assertion $A$ and Reason $R$?