Question

Fungal cell wall is composed of —
A. Chitin
B. Chitin or cellulose
C. Hemicellulose
D. Cellulose

Answer 1

Hint: The cell wall is the outermost layer of the cell. It protects the cell from any external environment stress forces. It also communicates with the other cells for exchange of elements between the cells.

Complete answer:
The fungal cell wall is located around the plasma membrane on the outer surface. It is the layer that communicates with the external environment of the cell. The layer is complex and flexible in nature. It is a protein rich cell wall. It also controls the osmotic balance of the cell. It protects the cell on the outer side and maintains the cell rigidity and integrity. It is capable of protecting the cell from the outer stressful forces. It is the characteristic feature seen in fungi. It is composed of chitins, glycans and glycoproteins. It also contains lipids and pigments like melanin. This layer mediates interaction with the external environment of the cell through adhesins. The receptors present on the cell triggers the cascade reaction in the cell. Chitin percentage varies in different species of fungi. It is formed by the action of chitin synthase from N-acetylglucosamine. It is three times higher in the C. Albicans hyphae as compared to yeasts. Glucans is the most essential part of the cell wall.

So the correct answer is A i.e chitin.

Note: Chitin is one of the content present in the cell wall. It is formed by the action of chitin synthase from N-acetylglucosamine. The chitin percentage varies in various species of fungi.