Chemical Evolution and Stanley Miller's Experiment Quiz

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18 Questions

What highly reactive radicals condensed to form hydrocarbons in the prebiotic soup?

CH- and CH2-

Which gases prevailed in the ancient world during the chemical evolution process?

Reduced gases

Experimental validation of chemical evolution was done by whom in 1953?

Stanley Miller and Harold Urey

What is the term used for the colloidal aggregates of organic molecules surrounded by a water shell?

Protobionts

Which type of bacteria synthesized bacterial chlorophyll during biological evolution?

Some bacteria synthesized bacterial chlorophyll

What evolved into true chlorophyll during the formation of oxygenic photoautotrophs?

Bacterial chlorophyll (iron porphyrin)

What is the proposed theory of the chemical and biological origin of life, also known as the Coacervate theory?

Proposed by A.I.Oparin and J.B.S Haldane in the 1920s

Which external sources of energy were believed to have played a role in the chemical evolution for the origin of life on Earth?

UV radiation, lightning, volcanic eruption

During Earth's early history, what compound was abundant in the primitive atmosphere but free oxygen was absent?

Ammonia (NH3)

What process condensed water vapor into rain that eventually formed oceans on early Earth?

Condensation

What were the lighter elements that flowed to Earth's surface as it cooled down over millions of years?

Helium, Hydrogen, Nitrogen, Carbon

Which scientists proposed the theory that genetic material originated from inorganic components during the formation of early life on Earth?

A.I.Oparin and J.B.S Haldane

Which theory proposes that all living organisms on Earth are created by a divine power?

Theory of Special Creation

Baron Georges Cuvier, a French naturalist, is associated with which theory about the origin of life?

Theory of Catastrophism

Which theory proposes that life reached Earth from outer space via resistant spores that evolved into different organisms?

Cosmozoic theory or Panspermia

In the context of the text, who objected to the Cosmozoic theory or Panspermia?

Francis Crick and L.E Orgel

Which theory suggests that the earth has been largely shaped by violent, worldwide events and then new life forms arise following these catastrophic events?

Theory of Catastrophism

Which theory involves the belief that life existed elsewhere in the universe and reached Earth from outer space via resistant spores?

Cosmozoic theory or Panspermia

Test your knowledge on the process of chemical evolution leading to the formation of organic molecules like sugars, amino acids, and nucleic acids. Learn about the experimental validation of this theory through Stanley Miller and Harold Urey's famous experiment.

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