Question

what is the difference between cell wall and cell membrane ?


( any 3 )

Answer 1

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•Cell wall is found in plant cell and cell membrane is found in animal cells.

•Cell membrane is covered by the cell wall which forms the outer most covering.

•Cell wall is completely permeable whereas cell membrane is semi-permeable.

•Cell wall is made up of cellulose and cell membrane is made up of lipids and proteins.

•Cell membrane is also known as plasma lemma.

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Answer 2

CELL WALL

Characteristics

1.Non living rigid layer surrounding plasma membrane 2.mainly composed of cellulose

3. Freely permeable

Functions

1.Gives rigidity and shape to the plant cell.

2. Provides protection.

3. Allows substances in solution to enter and leave without hindrance.

CELL MEMBRANE

Characteristics

1. Very thin,flexible, living membrane.

2. Possesses fine pores .

3. Semi permeable .

4. made up of lepeids.

Functions

1. Separates contents of cell from its surroundings

2. Regulates the entry of certain solutes and ions

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