Amoeba and Paramecium Feed

Also called

amoeba · paramecium · holozoic nutrition · pseudopodia · false feet · food vacuole · phagocytosis · cilia · oral groove · gullet · nutrition in amoeba · unicellular organisms · digestion in amoeba · egestion · contractile vacuole · अमीबा · पैरामीशियम · कूटपाद

Topics

• Amoeba has no fixed shape; it pushes out finger-like pseudopodia (false feet) to move and to catch food.
• Pseudopodia surround a food particle and fuse round it, trapping it in a food vacuole inside the cell.
• Digestive enzymes are poured into the food vacuole and break the complex food into simple soluble substances.
• The digested food diffuses out of the vacuole into the cytoplasm and is used for growth and energy.
• The undigested remains are carried to the cell surface and thrown out: this is egestion.
• Paramecium has a definite slipper shape; it cannot change shape to engulf food.
• Thousands of hair-like cilia beat in waves; they move Paramecium along and sweep food into the oral groove.
• Food passes down the oral groove to the gullet, where it is pinched off as a food vacuole into the cytoplasm.
• Taking in whole solid food this way is holozoic nutrition; the whole process happens inside one cell.

About this model

A GLB file of about 437 KB, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Model, science and animation: Lably (built procedurally with three.js; no downloaded meshes). | CC BY 4.0. Original geometry and animation made for Lably.

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