Respuesta :
Answer:
Option A, the carbohydrate molecule lacks nitrogen
Explanation:
Carbohydrates are group of organic compounds that contain three essential elements -
a) carbon
b) hydrogen
c) oxygen
While a protein is polymer of amino acids. An amino acid consists of following essential components
a) An amino group (−NH2) that has nitrogen molecule
b) An acidic carboxyl group (−COOH)
c) An organic R group that primarily has CHO elements
Hence option A is correct