Biology / Bio 2023 · Atom · ~20 seconds
Fungal Characteristics: Heterotrophic Absorption and the Chitin Wall
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Fungi are heterotrophic, absorbing nutrients after digesting them externally, and build cell walls from chitin, the polymer found in arthropod exoskeletons.
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A fungus secretes exoenzymes into its surroundings, breaking down organic matter into small molecules before absorbing them through the wall.
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Fungal digestion runs opposite to animal digestion — a fungus digests its food before ingesting it, not after.