Podcast
Questions and Answers
What is the function of the cell membrane?
What is the function of the cell membrane?
- Regulates the passage of molecules in and out of the cytoplasm (correct)
- Produces energy for the cell
- Synthesizes proteins and carbohydrates
- Stores genetic material
What is the composition of the cell membrane?
What is the composition of the cell membrane?
- Mix of lipids and nucleic acids with embedded proteins
- Single layer of carbohydrates with embedded lipids
- Multiple layers of nucleic acids with embedded carbohydrates
- Two layers of phospholipids with embedded proteins (correct)
Why is the plasma membrane considered semi-permeable?
Why is the plasma membrane considered semi-permeable?
- It allows certain molecules to pass through while stopping others (correct)
- It only allows water to pass through
- It allows all molecules to freely pass through
- It does not allow any molecules to pass through
What type of molecules are not permitted to diffuse through the cell membrane?
What type of molecules are not permitted to diffuse through the cell membrane?
What type of proteins are dispersed throughout the cell membrane?
What type of proteins are dispersed throughout the cell membrane?
What is the main role of transport proteins in the cell membrane?
What is the main role of transport proteins in the cell membrane?
Which model proposed the idea of unit membrane with three layers: an outer protein layer, a middle lipid layer, and an inner protein layer?
Which model proposed the idea of unit membrane with three layers: an outer protein layer, a middle lipid layer, and an inner protein layer?
Who proposed the Fluid Mosaic Model of the plasma membrane?
Who proposed the Fluid Mosaic Model of the plasma membrane?
What is the main function of the cell wall in a plant cell?
What is the main function of the cell wall in a plant cell?
Which model is currently accepted for the structure of the plasma membrane?
Which model is currently accepted for the structure of the plasma membrane?
According to the Fluid Mosaic Model, what are the two types of protein molecules present in the plasma membrane?
According to the Fluid Mosaic Model, what are the two types of protein molecules present in the plasma membrane?
Who proposed the idea of unit membrane as a trilaminar membrane?
Who proposed the idea of unit membrane as a trilaminar membrane?
What is the structure of the plasma membrane according to the Fluid Mosaic Model?
What is the structure of the plasma membrane according to the Fluid Mosaic Model?
What was proposed by Benson and Korn separately in 1966?
What was proposed by Benson and Korn separately in 1966?
'Composite model' for the structure of the plasma membrane was proposed by whom?
'Composite model' for the structure of the plasma membrane was proposed by whom?
