Who discovered the precise genetic structure layout known as the operon model in bacterial gene regulation? MCQ with Answer and Explanation

Question
Who discovered the precise genetic structure layout known as the operon model in bacterial gene regulation?
A. James Watson and Francis Crick
B. Barbara McClintock
C. François Jacob and Jacques Monod
D. Gregor Mendel
Answer: Option C
Solution (By JKSSB Mock Tests)
Jacob and Monod mapped the lac operon in E. coli, proving how cells inhibit or promote enzyme production based on nutrient environments.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
The invention of the common mechanical office stapler mechanism was popularized by which manufacturing developer?
A. Christopher Sholes
B. John Loud
C. Walter Hunt
D. George McGill and the Boston Wire Stitcher Company
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Correct Answer: Option D

Explanation:
McGill patented functional malleable brass paper fasteners, and industrial developers later automated magazine tracking feeds.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
The invention of synthetic nylon fiber, which replaced silk in textiles, was led by which chemist at DuPont?
A. Stephanie Kwolek
B. Leo Baekeland
C. Roy Plunkett
D. Wallace Carothers
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Correct Answer: Option D

Explanation:
Wallace Carothers invented Nylon (Polyamide 6,6) and Neoprene synthetic rubber in the 1930s.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
Who invented the first practical electronic digital computer with binary logic architecture, known as the Z3?
A. Tommy Flowers
B. Alan Turing
C. Konrad Zuse
D. John von Neumann
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Correct Answer: Option C

Explanation:
German engineer Konrad Zuse completed the Z3 in 1941, recognized as the world's first functional program-controlled Turing-complete computer.
This question belongs to: Static General Knowledge Inventions and Discoveries
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