Question

A unique chemical substance isolated from the nuclei of pus cells by Friedrich Miescher was initially named ______.

Options

• nucleic acid

• DNA

• nuclein

• RNA

Answer 1

A unique chemical substance isolated from the nuclei of pus cells by Friedrich Miescher was initially named nuclein.

Explanation:

In 1869, Friedrich Miescher isolated an acidic, phosphorus‑rich substance from the nuclei of pus cells, and he named this material “nuclein.” Later work separated its components, and the substance was identified as nucleic acid (now known as DNA).