NEET BIOLOGY

Detailed explanation-1: -Deoxyribonucleic acid (DNA) is made up of sugar, a nitrogenous base and a phosphate group (Figure 1.2). The combination of these molecules makes the building blocks for the DNA synthesis.

Detailed explanation-2: -Answer and Explanation: Biological molecules that are composed of monomer units containing sugar, a phosphate group, and a nitrogen-containing base are nucleic acids. The nucleic acids found in all living organisms are DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).

Detailed explanation-3: -In addition to carbon, hydrogen, and oxygen atoms, all proteins contain nitrogen and sulfur atoms, and many also contain phosphorus atoms and traces of other elements. Proteins serve a variety of roles in living organisms and are often classified by these biological roles.

Detailed explanation-4: -Lipids are composed mainly of carbon and hydrogen, but they can also contain oxygen, nitrogen, sulfur, and phosphorous.

Detailed explanation-5: -In and Around the Home: Fertilizers, yard and pet waste and certain soaps and detergents contain nitrogen and phosphorus, and can contribute to nutrient pollution if not properly used or disposed.