The structure of DNA was discovered in 1953 by James Watson and Francis Crick with the crucial aid of data from whom? MCQ with Answer and Explanation

Question
The structure of DNA was discovered in 1953 by James Watson and Francis Crick with the crucial aid of data from whom?
A. Dorothy Hodgkin
B. Barbara McClintock
C. Marie Curie
D. Rosalind Franklin
Answer: Option D
Solution (By JKSSB Mock Tests)
Rosalind Franklin's X-ray diffraction images (particularly Photo 51) were key to identifying the double-helix structure of DNA.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
Who discovered that certain types of chemical reactions produce electricity spontaneously, formalizing electrochemical cells?
A. Humphry Davy
B. Luigi Galvani and Alessandro Volta
C. Georg Ohm
D. Michael Faraday
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Correct Answer: Option B

Explanation:
Galvani observed muscle contractions from static discharges, and Volta channeled this into the continuous current metallic pile.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
Who discovered the exact structural formula of the complex molecule Vitamin B12, using advanced X-ray crystallography?
A. Dorothy Hodgkin
B. Barbara McClintock
C. Marie Curie
D. Rosalind Franklin
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Correct Answer: Option A

Explanation:
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
Question #3
Who discovered that biological neural transmission passes across physical cell junctions via specialized chemical messengers, founding Neurotransmission?
A. Willem Einthoven
B. Otto Loewi and Henry Dale
C. Santiago Ramón y Cajal
D. Camillo Golgi
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Correct Answer: Option B

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
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