Cell Membrane Structure Quiz

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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?

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?

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?

Large, hydrophilic, uncharged molecules and charged molecules Signup and view all the answers

What type of proteins are dispersed throughout the cell membrane?

Integral and peripheral proteins Signup and view all the answers

What is the main role of transport proteins in the cell membrane?

Facilitate the passage of specific molecules across the membrane Signup and view all the answers

Which model proposed the idea of unit membrane with three layers: an outer protein layer, a middle lipid layer, and an inner protein layer?

Trilaminar Model Signup and view all the answers

Who proposed the Fluid Mosaic Model of the plasma membrane?

Singer and Nicolson Signup and view all the answers

What is the main function of the cell wall in a plant cell?

To provide definite shape and mechanical support to tissues and organs Signup and view all the answers

Which model is currently accepted for the structure of the plasma membrane?

Fluid Mosaic Model Signup and view all the answers

According to the Fluid Mosaic Model, what are the two types of protein molecules present in the plasma membrane?

Intrinsic proteins and extrinsic proteins Signup and view all the answers

Who proposed the idea of unit membrane as a trilaminar membrane?

Robertson Signup and view all the answers

What is the structure of the plasma membrane according to the Fluid Mosaic Model?

Two layers of lipids and protein with an outer lipid layer and an inner protein layer Signup and view all the answers

What was proposed by Benson and Korn separately in 1966?

Hydrophobic binding model Signup and view all the answers

'Composite model' for the structure of the plasma membrane was proposed by whom?

(Scheide and Lin, 1970) Signup and view all the answers

Cell Membrane Structure Quiz

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Questions and Answers

What is the function of the cell membrane?

What is the composition of the cell membrane?

Why is the plasma membrane considered semi-permeable?

What type of molecules are not permitted to diffuse through 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?

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?

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?

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?

What is the structure of the plasma membrane according to the Fluid Mosaic Model?

What was proposed by Benson and Korn separately in 1966?

'Composite model' for the structure of the plasma membrane was proposed by whom?

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Cell Membrane Structure Quiz

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