Question
In Danielli and Davson's model (Sandwich model), the polar end is denoted by:
- Circular structure
- Rod structure
- Ribbon like structure
- Flat structure
Hint:
The polar ends in a plasma membrane will be of circular structures.
The correct answer is: Circular structure
- Danielli and Davson proposed the sandwich model of the plasma membrane.
- The model suggests that the membrane has polar and nonpolar structures.
- They are also known as hydrophilic heads and hydrophobic tails.
- The polar or hydrophilic heads will be circular in structure.
Related Questions to study
Which of the following helps in the transport of material across the membrane?
Which of the following helps in the transport of material across the membrane?
Cell membrane is a part of_________.
Cell membrane is a part of_________.
A plasma membrane shows fluid behaviour _____
The plasma membrane is semi-permeable in nature. It allows only certain molecules to enter the cell.
A plasma membrane shows fluid behaviour _____
The plasma membrane is semi-permeable in nature. It allows only certain molecules to enter the cell.
What is ‘X’ in the diagram given below?
The peripheral membrane protein provides mechanical support to the membrane.
What is ‘X’ in the diagram given below?
The peripheral membrane protein provides mechanical support to the membrane.
In plasma membrane, carbohydrates are attached to _____.
The lipids in the plasma membrane consisting of one hydrophobic and one hydrophilic end.
In plasma membrane, carbohydrates are attached to _____.
The lipids in the plasma membrane consisting of one hydrophobic and one hydrophilic end.
Glycolipids are_______.
In plant cells, glycolipids help in the formation of the membrane of chloroplast and in animal cells, it helps to determine the different types of blood group.
Glycolipids are_______.
In plant cells, glycolipids help in the formation of the membrane of chloroplast and in animal cells, it helps to determine the different types of blood group.
Plasma membrane _________.
There are certain transport proteins present in the cell membrane which help in the transportation of molecules across it.
Plasma membrane _________.
There are certain transport proteins present in the cell membrane which help in the transportation of molecules across it.
Which of the following is lipid component present in cell membrane?
The hydrophobic tail of phospholipid is attached to the rigid layer of the cholesterol.
Which of the following is lipid component present in cell membrane?
The hydrophobic tail of phospholipid is attached to the rigid layer of the cholesterol.
What is the name of the part A in the diagram given below?
The phospholipid bilayer has integral proteins embedded in its structure.
What is the name of the part A in the diagram given below?
The phospholipid bilayer has integral proteins embedded in its structure.
Transport proteins, transport molecules by _________.
There are three types of transport - uniport, symport, antiport. Uniport is the transportation of a single molecule. Symport is the movement of two molecules in the same direction whereas antiport is the movement of two molecules in different directions.
Transport proteins, transport molecules by _________.
There are three types of transport - uniport, symport, antiport. Uniport is the transportation of a single molecule. Symport is the movement of two molecules in the same direction whereas antiport is the movement of two molecules in different directions.
The following picture is of ________.
The phospholipid component is a crucial part of the plasma membrane.
The following picture is of ________.
The phospholipid component is a crucial part of the plasma membrane.
______ is the basic unit of a living organism.
The cells perform various functions in the body. They consist of many organelles and their cytoplasm is the site for many chemical reactions.
______ is the basic unit of a living organism.
The cells perform various functions in the body. They consist of many organelles and their cytoplasm is the site for many chemical reactions.
Which among the following contains the cell membrane?
The cell membrane also maintains the shape of the cell and provide its fluidity.
Which among the following contains the cell membrane?
The cell membrane also maintains the shape of the cell and provide its fluidity.
Which of the following statement is incorrect?
The cell membrane maintains electric or cell potential. This feature is required for proper communication between two cells, or cells and its outer environment.
Which of the following statement is incorrect?
The cell membrane maintains electric or cell potential. This feature is required for proper communication between two cells, or cells and its outer environment.
Which of the following organelles maintain cell’s potential?
The cell membrane helps in the communication of cells with the outer environment.
Which of the following organelles maintain cell’s potential?
The cell membrane helps in the communication of cells with the outer environment.
