The amoeba is a tiny, one-celled organism. You need a microscope to view a lot of amoebas – the biggest are only about 1 mm throughout. Amoebas live in fresh water (like puddle and ponds), in salt water, in wet soil, and in animals (including people). Tbelow are many type of different types of amoebas. The name amoeba comes from the Greek word amoibe, which suggests adjust. (Amoeba is occasionally spelled ameba.)

Anatomy

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cell membrane – the thin layer of protein and fat that surrounds the amoeba; it allows some substances to pass into the cell, and blocks other substances. contractile vacuole – a cavity within the amoeba that excretes excess water and also waste; the waste is lugged to the cell membrane and also is then got rid of from the amoeba. cytoplasm (ectoplasm and endoplasm) – a jelly-favor material that fills a lot of of the cell; the organelles (like the nucleus) are surrounded by cytoplasm. food vacuole – a cavity within the amoeba in which food is digested (damaged dvery own in order to be soaked up by the amoeba). nucleus – the major organelle of the amoeba, located centrally; it controls reproduction (it includes the chromosomes) and many type of various other essential attributes (including eating and growth). pseudopods – momentary “feet” that the amoeba offers to move approximately and also to engulf food.

You are watching: How do amoebas capture and digest food

An amoeba is composed of a single blobby cell surrounded by a porous cell membrane. The amoeba “breathes” using this membrane – oxygen gas from the water passes in to the amoeba through the cell membrane and carbon dioxide gas leaves via it. A complex, jelly-like series of folded membranes called cytoplasm fills many of the cell. A big, disk-shaped nucleus within the amoeba controls the expansion and also reproduction of the amoeba.

Diet

Amoebas eat algae, bacteria, plant cells, and microscopic protozoa and also metazoa – some amoebas are parasites. They eat by surrounding tiny pposts of food through pseudopods, creating a bubble-favor food vacuole. The food vacuole digests the food. Wastes and excess water are transported exterior the cell by contractile vacuoles.

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An amoeba, a single-celled organism doing not have inner organs, is displayed approaching a a lot smaller paramecium, which it begins to engulf through huge outflowings of its cytoplasm, dubbed pseudopodia. Once the paramecium is completely engulfed, a primitive digestive cavity, called a vacuole, develops approximately it. In the vacuole, acids break the paramecium down right into chemicals that the amoeba can diffusage ago right into its cytoplasm for nourishment.

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Amoeba proteus is busy catching a ciliate by surrounding it with its pseudopodia. The nucleus have the right to be viewed simply below the pseudopodia. Bottom left is a water expelling contractile vacuole.

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Amoeba eating a paramecium

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The amoeba heads toward the paramecium. It begins to spread out it’s body to catch its prey. The amoeba will absorb its lunch totally inside the amoeba!

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