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Questions and Answers
What did Hugh Davson and James Danielli propose in 1935?
What did Hugh Davson and James Danielli propose in 1935?
- A model with membrane proteins exposed to water
- A mosaic model with proteins dispersed within the bilayer
- A model with proteins embedded in the hydrophobic regions of the bilayer
- A sandwich model with the phospholipid bilayer between two layers of globular proteins (correct)
What was the main problem found with the sandwich model proposed by Davson and Danielli?
What was the main problem found with the sandwich model proposed by Davson and Danielli?
- Placement of membrane proteins with hydrophilic and hydrophobic regions (correct)
- Lack of clarity on the role of phospholipids
- Exposure of membrane proteins to water
- Incompatibility with the fluid mosaic model proposed later
According to S. J. Singer and G. Nicolson, how is the membrane structured?
According to S. J. Singer and G. Nicolson, how is the membrane structured?
- A sandwich model with phospholipids between protein layers
- A model with membrane proteins exposed to water
- A mosaic of proteins dispersed within the bilayer (correct)
- A model with proteins embedded in the hydrophobic regions of the bilayer
