Nucleic acids exhibits secondary structure. Justify with example

Explain secondary structure of a protein.

Explain structural isomerism with examples.

Secondary structure of protein refers to

Ascorbic acid resembles the structure of

The secondary structure of a protein refers to

Primary and secondary structures of nucleic acid reveals

Nucleic acids were discovered in the nuclei of

Invasion of an Alien species leads to extinction of native species. Justify this with two examples.