Who discovered the first biological enzyme, Diastase, which breaks down starches into sugars? MCQ with Answer and Explanation
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Question #1
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Who discovered the radioactive gas Radon in 1900?
Correct Answer: Option B
Explanation:
Friedrich Ernst Dorn discovered radon while studying the radioactive decay chain of radium emissions.
Friedrich Ernst Dorn discovered radon while studying the radioactive decay chain of radium emissions.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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The invention of the common mechanical cash register to prevent employee theft was patented by whom in 1879?
Correct Answer: Option A
Explanation:
Saloon owner James Ritty designed 'Ritty's Incorruptible Cashier' after observing the revolutions of a ship's propeller tracker.
Saloon owner James Ritty designed 'Ritty's Incorruptible Cashier' after observing the revolutions of a ship's propeller tracker.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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Who discovered that biological enzymes can perform structural transformations outside of living cell containers, establishing cell-free fermentation?
Correct Answer: Option D
Explanation:
Buchner proved yeast extracts ferment sugar into ethanol without living cell structural scaffolding, winning the 1907 Nobel Prize in Chemistry.
Buchner proved yeast extracts ferment sugar into ethanol without living cell structural scaffolding, winning the 1907 Nobel Prize in Chemistry.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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