An enzyme works like a key to a lock. If it finds the right thing it can work.
Hope it helps.
They use the directions found in DNA to make Proteins & Polypeptides.
The testes is responsible for
creating sperm cells. It is the male reproductive organ found below the penis.
Pernicious anemia can be defined as a medical condition in which the body of the affected individual is unable to make enough of the healthy red blood cells. The lack of the vitamin B-12 in the body of the affected person results in this condition. It is treated by giving Vitamin B-12 pills to the patient.
Hence, the answer is 'Vitamin B-12'.