What is the difference between ectoplasm and endoplasm?
Credit: Dr. Andre Kempe Oxford Scientific Getty Images
Q:

What is the difference between ectoplasm and endoplasm?

A:

Quick Answer

Endoplasm and ectoplasm are names for the inner and outer portions of an amoeba’s cytoplasm. Ectoplasm is the clear outer cytoplasmic layer of an amoeba. Endoplasm, on the other hand, is the inner granule-rich cytoplasm of the amoeba.

  Know More

Full Answer

An amoeba is a single cell microorganism made up of a nucleus and cytoplasm. Its ectoplasm is a clear gel, while the endoplasm is more fluid or watery and houses the majority of the cell’s granules and minute structures. The endoplasm makes up the bulk of the cell.

Endoplasm helps the amoeba with locomotion or movement. Since amoeba move by flowing its cytoplasm over surfaces, flowing the endoplasm in different directions moves the cell along. The ectoplasm steers the direction of the cell by extending itself into a pseudopodium, a gel-like ectoplasmic tube. The endoplasm then moves the cell by flowing into the pseudopodium. When all of the endoplasm flows into the pseudopodium, the extended ectoplasm, the amoeba advances itself into a new position.

The ectoplasm also is responsible for changing the direction of the pseudopodium. When the alkalinity and acidity of the water changes, the location of the pseudopodium changes. Slight changes in the alkalinity or acidity impedes movement or causes the cytoplasm to start flowing. The endoplasm is responsible for regulating the concentration of water in the cell. Since amoeba have a partial membrane, the endoplasm easily absorbs and releases excess water.

Learn more about Biology

Try a quiz

Q:
What is a baby puffin called?

Related Questions

  • Q:

    Why are scientific names important?

    A:

    Scientific names are important because they allow people around the world to communicate accurately about animal species. With the help of international rules on naming animals, zoologists avoid naming the same species twice. This means that each scientific name is unique.

    Full Answer >
    Filed Under:
  • Q:

    Why is it confusing to refer to organisms by common names?

    A:

    It is confusing to refer to organisms by common names because some unrelated organisms share the same common name. One example of this are the plants known as geranium. One of them is the pelargonium, and the other is the true geranium, which is also known as cranesbill.

    Full Answer >
    Filed Under:
  • Q:

    What is a list of names of unicellular organisms?

    A:

    Amoebae, slime mold, algae and protactists are some examples of unicellular organisms. Unicellular organisms fall under the main groups of bacteria, archaea, protozoa, single-celled algae and single-celled fungi. The two general categories are prokaryotes, which lack membrane-bound nuclei and membrane-bound organelles, such as mitochondria; and eukaryotes, which are more complex, having membrane-bound organelles and nuclei.

    Full Answer >
    Filed Under:
  • Q:

    What are the names of unicellular organisms?

    A:

    Sulfolobus acidocaldarius, Escherichia coli, Methanococcus jannaschii, Pyrolobus fumarii and Euglena haematodes are some names of unicellular organisms. The names represent the genus and species. The domains are at the top of biological taxonomy. Single-celled creatures fall into all three domains: Eukaryota, Eubacteria and Archaea.

    Full Answer >
    Filed Under:

Explore