Q:

How do Euglena get rid of waste?

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Quick Answer

Euglena excrete waste in the same way as other protozoans, through a vacuole sack that can take in and push out water loaded with nutrients or metabolic products. The vacuole sack enlarges as the waste products accumulate. These vacuoles are discharged as frequently as every half minute.

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Full Answer

The cytosol of the plasma membrane of euglena makes them always hypertonic to their surrounding aquatic environment. This enables water to flow freely across the plasma membrane, facilitating the expulsion of waste from the vacuole. Contractile vacuoles consist of two sub-compartments, each of which is encircled by a different membrane. One membrane is divided into minute tubules and vesicles containing proton-translocating enzymes that enable active transport of components in and out of the protozoa. This active transport involves the generation of an electrochemical gradient though the membrane enzymes, which pumps out unwanted waste components and pumps desirable nutrients into the protozoan.

The other membrane serves as an enclosure for a reservoir, lacking the enzymes of the first. This second membrane is elastic, enabling its expansion for the storage of excess fluid. The elastic membrane may fuse with the outer plasma membrane surrounding the two sub-compartments to eject unwanted waste products. In addition to waste product expulsion, the vacuole sack is responsible for the osmoregulation of the interior of the euglena with its surrounding environment.

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Related Questions

  • Q:

    What is the scientific classification of Euglena?

    A:

    Scientists assign Euglena to the Kingdom Protista, although these unique organisms share characteristics of plants and animals. The complex physical and biological structures of Euglena keep them from meeting all the qualification criteria of most kingdoms, but they most closely resemble protists. The Kingdom Protista contains other microorganisms like amoebas and paramecium, making it the most suitable classification for Euglena.

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  • Q:

    What is the structure of the Euglena?

    A:

    According to Kenyon College, the structure of the single-celled eukaryotic Euglena includes a spiral exoskeleton outside of a long, thin cell with a flagellum for motion and, in most cases, several internal chloroplasts. They are capable of both photosynthesis and consuming other organisms in their environment.

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  • Q:

    How do Euglena digest food?

    A:

    According to the Monroe County Women's Disability Network, Euglena digest food like any other protozoa by taking the food into the body and storing it in vacuoles where the nutrition is then spread throughout the body. These small organisms are able to eat food as well as produce it.

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  • Q:

    How do euglena gracilis reproduce?

    A:

    Euglena gracilis reproduce through a process called mitosis. In order to complete this process, they must be exposed to the right temperature and must be well-fed. Once a Euglena gracilis completes mitosis, it will split its self in two, which results in another Euglena gracilis. The completion of this process is best observed when another eyespot appears on a Euglena gracilis that is splitting in two.

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