Carbon, nitrogen, oxygen and hydrogen form the basis of:

Carbon, nitrogen, oxygen and hydrogen form the basis of:

• A. Mixtures
• B. Elements
• C. Compounds
• D. Amino acids

Answer: (D)

The key idea is what elements make up amino acids. Amino acids are organic molecules built around carbon, with hydrogen, oxygen, and nitrogen attached in specific ways. The carbon backbone forms the main framework of the molecule, while hydrogen is bonded to the carbon and to other atoms. Nitrogen is present in the amino group (-NH2), and oxygen is present in the carboxyl group (-COOH); these two functional groups give amino acids their characteristic chemistry and enable them to link together to form proteins. Some amino acids also contain sulfur in certain side chains, but the essential set of elements that defines amino acids is carbon, hydrogen, nitrogen, and oxygen. That's why these four elements form the basis of amino acids.

The key idea is what elements make up amino acids. Amino acids are organic molecules built around carbon, with hydrogen, oxygen, and nitrogen attached in specific ways. The carbon backbone forms the main framework of the molecule, while hydrogen is bonded to the carbon and to other atoms. Nitrogen is present in the amino group (-NH2), and oxygen is present in the carboxyl group (-COOH); these two functional groups give amino acids their characteristic chemistry and enable them to link together to form proteins. Some amino acids also contain sulfur in certain side chains, but the essential set of elements that defines amino acids is carbon, hydrogen, nitrogen, and oxygen. That's why these four elements form the basis of amino acids.