X is the right granted by a government to an inventor to prevent others from commercial use of this invention. When 'X' are granted for biological entities and for products derived from them, these are called 'Y'
Read the above paragraph and identify X and Y

The pathway of respiration common in all living organisms is ul(x) , it occurs in the ul(y) and the products formed are two molecules of ul(Z) . Identify X,Y and Z in the above paragraph and select the correct answer.

Compare x and y bond angle from the above given molecules.

X and Y are type of diseases. X can spread from an infected person to a healthy person by actual contact between them and can spread from an infected person to healthy person with food, air or water. Y remains confined to the person who develops them and do not spread to others. Identify X and Y.