The answer is B cell membrane
ALL CELLS NEED THIS TO PROTECT THEM!
The place where large number of energy is required for cells like in liver , in heart , in legs etc
Answer:
a substituted derivative of purine, especially the bases adenine and guanine present in DNA.
a colorless crystalline compound with basic properties, forming uric acid on oxidation.
Answer:
I don't understand thequestion
Answer:
1)The atomic mass number of an element
2)The relative electronegativity of an element
3) The period of an element