Which of the following macromolecules is NOT essential for life?

Vitamins are considered micronutrients, which means they are important for various bodily functions but are not classified as macromolecules like nucleic acids, carbohydrates, or proteins. While vitamins play crucial roles in metabolism and other physiological processes, they are not directly involved in the fundamental building blocks of life that macromolecules provide.

Nucleic acids, such as DNA and RNA, are essential for storing and transmitting genetic information. Carbohydrates serve as a primary energy source for cells and are important for structure and signaling. Proteins, composed of amino acids, perform a vast array of functions, including catalyzing biochemical reactions, providing structural support, and regulating processes within the body. Therefore, while vitamins are important to the overall well-being and metabolic functions of organisms, they do not fall under the category of essential macromolecules required for life at a fundamental level.