Answer
Verified
297.9k+ views
Hint: The cell wall covers the outermost layer of the cell. It is present on top of the cell membrane. It is tough, flexible and rigid. It provides cell protection and structural support. It separates the interior content of the cell from the harsh exterior environment. The composition of the cell wall varies from cell to cell. They are mostly made up of polysaccharides, polymers, glycoproteins, peptidoglycan and silica.
Complete explanation:
Animal cells do not possess cell walls. Cell walls are present only in prokaryotes, algae, fungi and plants. The cell wall of plants is made up of polysaccharides such as cellulose, hemicelluloses and pectin. Algal cell wall is made up of polysaccharides and glycoprotein such as carrageenan and agar. Fungi cell walls contain chitin and prokaryotes cell walls are made up of peptidoglycans.
The Cell wall is hard and rigid offering the cell protection against mechanical stress. It also gives the cell a proper shape. Cell wall is also selectively permeable in nature. It prevents the entry of large molecules that may be toxic to the cell. It helps in the creation of stable osmotic environments by preventing osmotic lysis and retaining water. The composition and properties of the cell wall may change during the cell cycle and growth.
Animal cells only contain cell membranes. It is present as a thin semi permeable layer surrounding the cell and made up of protein and fats. It protects the cell from harsh external surroundings.
Note:
The plant cell wall is usually arranged in three layers called primary cell wall, middle lamella and secondary cell wall. The primary cell wall is present closest to the inside of the cell. Its main role is to allow the wall to stretch for the purpose of growth. Middle lamella is the outermost layer of the cell and it acts as an interface between two neighbouring cells. It is primarily made up of pectin, lignin and proteins. The secondary cell wall is present within the primary cell wall. It is the thickest layer and provides shape and permeability to the cells.
Complete explanation:
Animal cells do not possess cell walls. Cell walls are present only in prokaryotes, algae, fungi and plants. The cell wall of plants is made up of polysaccharides such as cellulose, hemicelluloses and pectin. Algal cell wall is made up of polysaccharides and glycoprotein such as carrageenan and agar. Fungi cell walls contain chitin and prokaryotes cell walls are made up of peptidoglycans.
The Cell wall is hard and rigid offering the cell protection against mechanical stress. It also gives the cell a proper shape. Cell wall is also selectively permeable in nature. It prevents the entry of large molecules that may be toxic to the cell. It helps in the creation of stable osmotic environments by preventing osmotic lysis and retaining water. The composition and properties of the cell wall may change during the cell cycle and growth.
Animal cells only contain cell membranes. It is present as a thin semi permeable layer surrounding the cell and made up of protein and fats. It protects the cell from harsh external surroundings.
Note:
The plant cell wall is usually arranged in three layers called primary cell wall, middle lamella and secondary cell wall. The primary cell wall is present closest to the inside of the cell. Its main role is to allow the wall to stretch for the purpose of growth. Middle lamella is the outermost layer of the cell and it acts as an interface between two neighbouring cells. It is primarily made up of pectin, lignin and proteins. The secondary cell wall is present within the primary cell wall. It is the thickest layer and provides shape and permeability to the cells.
Recently Updated Pages
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
What are the possible quantum number for the last outermost class 11 chemistry CBSE
Is C2 paramagnetic or diamagnetic class 11 chemistry CBSE
What happens when entropy reaches maximum class 11 chemistry JEE_Main
Calculate the volume occupied by 88 gram of CO2 at class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
How do you solve x2 11x + 28 0 using the quadratic class 10 maths CBSE
Select the correct plural noun from the given singular class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
The sum of three consecutive multiples of 11 is 363 class 7 maths CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
How many squares are there in a chess board A 1296 class 11 maths CBSE