Who discovered the monomers of nucleic acids? Phoebus Levene James Watson, Francis Crick, and Rosalind Franklin Friedrich Miescher Gerardus Johannes Mulder and Jöns Jacob Berxelius

Phoebus Levene( 1896, Sagor Russia - Septemeber 1940, New York)

Explanation:

These were developed by Phoebus Aaron Theodor Levene ,he was a russian who studied medicine, with keen interest in organic chemistry.

He migrated to the US in 1891, and started practising medicine  in 1892.Due to his strong interest in research he combined research(1894) in  molecular structure of sugars with medical practice,But this was cut short when he contracted tuberculosis.

Between 1896- 1906,he collaborated with many nucleic acids  and protein exoperts  e.g Albrecht Kossel and Emil Fischer to  wok on the structure of DNA.And headed the Rockefeller Institute for Medical Research.

He works included :the isolation of  Nucleotide-monomers of DNA

:the isolation of D-ribose sugar from ribonucleic acid molecule.(RNA)

Discovery of 2-deoxyribonucleic ,

How the components of Nucleotide(phosphate group,sugars, and organic bases) combined to form nucleotide, and how the latter undergo condensation reaction to form DNA.

answer; /// i believe that the correct answer is ( monophasic ); ethinyl estradiol- ethynodiol diacetate is a monophasic oral contraceptive agent; ///

the endomembrane system i think