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GK QUESTION#3970

In the year 1925, who extracted lipids from an erythrocyte sample and found that lipid monolayers are good for measuring molecular surface area versus lateral pressure?

  1. AGorter and GrendelCorrect answer
  2. BCarson and Eccles
  3. CAvery and Buck
  4. DMargulis and Ruska
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Answer

A. Gorter and Grendel

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Explanation

Gorter and Grendel extracted red-cell lipids and spread them as a monomolecular film in 1925. They compared lipid-film area with cell surface area to infer a lipid bilayer. Film area depends on surface pressure; the experiment used an existing monolayer method rather than inventing all such measurements.

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