Discussion
Which of the following combinations regarding cell wall composition and its respective organism is INCORRECT?
Answer: C
The incorrect combination is Pectin - Fungus.
The cell wall of fungi is made mostly of chitin and glucans. Pectin is a part of the plant cell wall. Peptidoglycan in bacteria, chitin in the exoskeleton of insects and cellulose in plants are correct.
So only the pectin and fungus pair is wrong.
Peptidoglycan forms the cell wall of bacteria, chitin is in the exoskeleton of insects and also in the cell wall of fungi, and cellulose forms the plant cell wall. Pectin is a plant polysaccharide. So the pair that gives pectin for fungus is incorrect, because the fungal wall is made of chitin.
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