AP BIOLOGY

Detailed explanation-1: -They are long-chain polymers. They are responsible for the transmission of hereditary material. They are hydrophilic in nature.

Detailed explanation-2: -Answer and Explanation: Nucleotide bases are hydropobic because they have aromatic rings and aromatic rings are non-polar. Water is a solvent for polar and charged molecules owing to the fact that it is a polar molecule which means it can interact with such molecules.

Detailed explanation-3: -Are nucleic acids hydrophilic or hydrophobic? Why? Nucleic acids are hydrophilic. DNA is soluble in water because the sugar and phosphate molecules that make up the DNA backbone are hydrophilic.

Detailed explanation-4: -In nature, the DNA is hydrophilic due to the presence of phosphorus in phosphodiester bonds.

Detailed explanation-5: -DNA is a hydrophilic molecule, which is negatively charged. Cell membrane or plasma membrane is hydrophobic. It mainly comprises lipids which do not allow hydrophilic molecules such as DNA to cross the cell membrane.