GENERAL KNOWLEDGE

Detailed explanation-1: -Complete Answer: The four most common elements are oxygen, carbon, hydrogen and nitrogen. Along with calcium and phosphorus, they make up 99% of the mass of living organisms. Sulphur is the element that is not one of the four most common elements.

Detailed explanation-2: -Proteins, carbohydrates and lipids are made from three basic molecules: carbon, hydrogen and oxygen. However, all proteins contain an element not found in carbohydrates and lipids is nitrogen.

Detailed explanation-3: -The CHNOPS elements are carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur. These elements are the most abundant elements found in living things. Together, the six elements of life, form large, organic molecules known as macromolecules or biomolecules.

Detailed explanation-4: -Detailed Solution. Zinc is not an element common to all living organisms.

Detailed explanation-5: -The correct answer: The element which is not found in proteins is D) Water. The protein structures are formed with the help of amino acid strands. The amino acid is formed with the elements carbon, hydrogen, oxygen, and nitrogen as part of the basic structure with some other elements as well.