AP BIOLOGY

Detailed explanation-1: -The amine group of the amino acid and the nitrogenous base of the nucleic acids contains the radioactive nitrogen labeling. Therefore, proteins and nucleic acids molecules will be labeled.

Detailed explanation-2: -If cells are grown in a medium containing radioactive 32P-labeled phosphate both phospholipids and nucleic acids will be labelled with 32P. Phospholipids and nucleic acids both possess phosphate groups in their structures; therefore, phosphate can be replaced and easily substituted with 32P-labeled phosphate groups.

Detailed explanation-3: -Nucleic acids are made of nitrogen-containing bases, phosphate groups, and sugar molecules. Each type of nucleic acid has a distinctive structure and plays a different role in our cells.

Detailed explanation-4: -Proteins are made up of hundreds or thousands of smaller units called amino acids, which are attached to one another in long chains. There are 20 different types of amino acids that can be combined to make a protein.

Detailed explanation-5: -Nucleic acids are the main information-carrying molecules of the cell and they are of two types: ribonucleic acid (RNA) and deoxyribonucleic acid (DNA). Nucleic acids are made up of macromolecules called nucleotides. Complete answer: Nucleotides are the macromolecules that constitute the nucleic acids.