Who discovered the exact structural formula of the complex molecule Vitamin B12, using advanced X-ray crystallography? MCQ with Answer and Explanation

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Who discovered the exact structural formula of the complex molecule Vitamin B12, using advanced X-ray crystallography?

A. Dorothy Hodgkin

B. Marie Curie

C. Barbara McClintock

D. Rosalind Franklin

Answer: Option A

Solution (By JKSSB Mock Tests)

Dorothy Hodgkin determined the atomic structures of penicillin, vitamin B12, and insulin, winning the 1964 Nobel Prize in Chemistry.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered that biological neural transmission passes across physical cell junctions via specialized chemical messengers, founding Neurotransmission?

A. Santiago Ramón y Cajal

B. Camillo Golgi

C. Otto Loewi and Henry Dale

D. Willem Einthoven

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Correct Answer: Option C

Explanation:
Loewi isolated acetylcholine from frog heart tracking setups, sharing a Nobel Prize with Dale for chemical nerve impulse transmission.

This question belongs to: Static General Knowledge Inventions and Discoveries