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

Who discovered the precise genetic structure layout known as the operon model in bacterial gene regulation?

A. François Jacob and Jacques Monod

B. Barbara McClintock

C. James Watson and Francis Crick

D. Gregor Mendel

Answer: Option A

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 Report Error

The invention of the common chemical transformation layout known as the Solvay process optimized production of what?

A. Sodium Carbonate

B. Nitric Acid

C. Ammonia

D. Sulfuric Acid

Correct Answer: Option A

Explanation:
Ernest Solvay patented the ammoniacal brine method in 1861, replacing the more expensive Leblanc soda ash synthesis.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2 Report Error

The structure of benzene ring ($C_6H_6$) was discovered by which chemist?

A. Dmitri Mendeleev

B. Antoine Lavoisier

C. Robert Boyle

D. Friedrich August Kekulé

Correct Answer: Option D

Explanation:
Friedrich August Kekulé discovered the ring structure of benzene after famously having a daydream of a snake biting its own tail.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3 Report Error

Who discovered the planet Uranus in 1781?

A. William Herschel

B. Christiaan Huygens

C. Galileo Galilei

D. Giovanni Cassini

Correct Answer: Option A

Explanation:
William Herschel discovered Uranus using a telescope he built himself, making it the first planet discovered in modern history.

This question belongs to: Static General Knowledge Inventions and Discoveries