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Q: In which year did E. Gorter and F. Grendel, after investigating the surface area of lipids, achieved a major success and concluded that the lipid surface surrounding cells must be bilayered?
  • A. 1945
  • B. 1962
  • C. 1910
  • D. 1925
Correct Answer: Option D - The significance of Gorter and Grendel's discovery lies in their pioneering work on the structure of the cell membrane. In 1925, they conducted experiments that led to the hypothesis that the plasma membrane is a lipid bilayer. Their work involved extracting lipids from red blood cells and measuring the surface area of these lipids when spread as a monolayer. They found that the surface area of the lipid monolayer was roughly double that of the cell's surface area, supporting the idea that the cell membrane consisted of two layers of lipids.
D. The significance of Gorter and Grendel's discovery lies in their pioneering work on the structure of the cell membrane. In 1925, they conducted experiments that led to the hypothesis that the plasma membrane is a lipid bilayer. Their work involved extracting lipids from red blood cells and measuring the surface area of these lipids when spread as a monolayer. They found that the surface area of the lipid monolayer was roughly double that of the cell's surface area, supporting the idea that the cell membrane consisted of two layers of lipids.

Explanations:

The significance of Gorter and Grendel's discovery lies in their pioneering work on the structure of the cell membrane. In 1925, they conducted experiments that led to the hypothesis that the plasma membrane is a lipid bilayer. Their work involved extracting lipids from red blood cells and measuring the surface area of these lipids when spread as a monolayer. They found that the surface area of the lipid monolayer was roughly double that of the cell's surface area, supporting the idea that the cell membrane consisted of two layers of lipids.