Question

Which of the following scientists are incorrectly paired with their theories or experiments?

• A. Fox created polypeptides called proteinoids by dripping organic molecules onto hot sand
• B. Cech discovered RNA catalysts, called ribozymes, that remove introns and catalyse RNA synthesis
• C. Oparin and Haldane first produced organic compounds by simulating conditions of early Earth
• D. Whittaker developed the five-kingdom system of classification

Answer 1

The correct option is C Oparin and Haldane first produced organic compounds by simulating conditions of early Earth

• In the 1920s, Russian scientist Aleksandr Oparin and English scientist J. B. S. Haldane both separately proposed what's now called the Oparin-Haldane hypothesis: that life on Earth could have arisen step-by-step from non-living matter through a process of “gradual chemical evolution.”
• Oparin and Haldane thought that the early Earth had a reducing atmosphere, meaning an oxygen-poor atmosphere in which molecules tend to donate electrons.
• Simple inorganic molecules could have reacted to form building blocks like amino acids and nucleotides.
• The polymers could have assembled into units or structures that were capable of sustaining and replicating themselves.
• Oparin thought these might have been “colonies” of proteins clustered together to carry out metabolism, while Haldane suggested that macromolecules became enclosed in membranes to make cell-like structures.
  

So the correct option is 'Oparin and Haldane first produced organic compounds by simulating conditions of early earth'.