Bio-chemical compounds are used as:

Correct option is D

The correct answer is (d) All of the above

Explanation:

• Biochemical compounds are organic substances that occur in living organisms and are used in various industrial and domestic applications.
• In skin treatments, compounds like lipids, vitamins, and antioxidants are used to improve skin health.
• Many biochemicals serve as food preservatives to prevent spoilage by inhibiting microbial growth (e.g., citric acid).
• Cooking oils are themselves biochemical compounds consisting primarily of lipids (triacylglycerols).
• They are essential for various biological processes and commercial products.

• Biochemistry bridges biology and chemistry, focusing on the chemical processes within and relating to living organisms.
• The four main classes of biochemical molecules are carbohydrates, lipids, proteins, and nucleic acids.

• Substances like sodium benzoate or vinegar are biochemical in nature used to extend shelf life.

• Sourced from plants or animals, these are vital sources of essential fatty acids.