Which elements are included in the COHNS elements?

The COHNS elements are essential components that make up proteins and other important biological molecules. The correct choice includes Carbon, Oxygen, Hydrogen, Nitrogen, and Sulfur. Each of these elements plays a significant role in the structure and function of amino acids and proteins.

Carbon is the backbone of organic molecules, forming the fundamental framework that allows for the formation of various compounds. Oxygen is vital for energy production and is a key part of the molecular structure. Hydrogen is involved in the formation of bonds and is essential for the chemical reactions that sustain life. Nitrogen is a critical component of amino acids and nucleic acids, making it necessary for the formation of proteins and DNA. Lastly, Sulfur is also found in some amino acids, contributing to the stability and structure of proteins through disulfide bonds.

By understanding the role of these elements, students can appreciate the importance of COHNS in biochemistry and its relevance in the field of cosmetology, particularly when discussing the structure and properties of hair, skin, and nails. The other options include elements that are not part of the COHNS acronym, clarifying their exclusion from this specific group.