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Protozoa

Protozoans are unicellular organisms found in many different habitats. They are eukaryotic and can be predators, herbivores or parasites, depending upon the species. The well-known disease malaria is caused by a protozoa.

1,445 Questions

Do humans have amoebas?

There are several varieties found in humans that are not considered to be disease producers. However, such virulent strains as Entamoeba coli and Entamoeba hartmanni, can produce mild diarrhea and dysentery. Most amoeba infestations, however, do not produce clinical symptoms.

What is an amoebas purpose in life?

While amoebas are only single celled protozoa, some types are beneficial to their enviorment while others can be quite harmful. Amoebas can be found in both fresh and salt water, soil, and as parasites in animals. The most common amoebas, like the ones you usually see in science lab in schools, feed on decaying matter at the bottom of streams. The amoebas that are parasites can be quite dangerous to humans and animals, causing severe infections.



Read more: http://greenanswers.com/q/138820/nature-ecosystems/what-purpose-do-amoebas-serve-environment#ixzz14ApMcGnp

The process in which 2 paramecium join to exchange DNA is called?

The process in which 2 paramecium join to exchange DNA is called conjugation. During conjugation, the micronuclei of the paramecia undergo meiosis to exchange genetic material, leading to genetic diversity in the offspring.

What do amoeba and paramecium eat?

Amoeba feeds on small microorganisms like bacteria, algae, and other tiny protozoans by engulfing them through phagocytosis. Paramecium feeds on bacteria, algae, and other small organisms by sweeping them into its oral groove using cilia, forming a food vacuole that digests the food.

Which order does an amoeba fall into?

Domain: Eukaryota Kingdom: Amoebozoa Phylum: Tubulinea Order: Tubulinida Family: Amoebidae Genus: Amoeba

What disease does paramecium caudatum cause?

Paramecium caudatum is not a disease-causing organism. It is a species of free-living ciliate protozoan found in aquatic environments, commonly used in biological studies as a model organism for research purposes.

Function or cytopharynx in Paramecium?

The cytopharynx in Paramecium is a tubular structure used for feeding. It helps in capturing and engulfing food particles, such as bacteria and algae, through a process called phagocytosis. Once food particles are ingested into the cytopharynx, they are enclosed in a food vacuole for digestion.

What is the best medicine for amoeba in Kenya?

Metronidazole and tinidazole are commonly used antibiotics to treat amoebic infections in Kenya. However, it's important to consult a healthcare professional for proper diagnosis and treatment recommendation.

What is the source of the water discharged by the two large vacuoles of a paramecium?

The water discharged by the large vacuoles of a paramecium comes from the surrounding environment. The vacuoles regulate water balance within the cell by taking in excess water through the process of osmosis and then expelling it to prevent the cell from bursting.

How is amoeba able to move?

Amoebas move by extending and retracting their pseudopods, which are temporary projections of the cell membrane filled with cytoplasm. By changing the shape of these pseudopods, amoebas are able to propel themselves forward in a process known as amoeboid movement. This movement allows them to search for food and navigate their environment.

What organelles are found in an amoeba?

An amoeba contains several organelles, including a nucleus, mitochondria for energy production, golgi apparatus for packaging and transporting proteins, and vacuoles for storing nutrients and expelling waste. Some amoebas also have specialized organelles like contractile vacuoles for osmoregulation.

How is the zoospore of the unicellular green alga Chlamydomonas formed?

The zoospores of Chlamydomonas are formed through a process known as zoosporogenesis. It involves the transformation of a motile, flagellated cell called a zoospore mother cell into mature zoospores. This process includes the growth of flagella and chloroplasts within the mother cell before division to form new zoospores.

Chlamydomonas move by their flagella?

Yes, Chlamydomonas move by beating their two flagella, which are whip-like structures attached to their cell body. The movement of the flagella allows them to swim through their aquatic environment in search of light and nutrients.

Can euglena cause disease?

Euglena are not known to cause disease in humans. They are single-celled organisms that are found in freshwater environments and play a role in the ecosystem as primary producers. While they can be a part of the food chain and have been studied for their photosynthetic abilities, they are not typically associated with causing diseases in humans.

Where does digestion happen in the ameba and paramecium?

In Amoeba, digestion occurs in the food vacuoles, where enzymes break down food particles into simpler substances that can be absorbed by the cell.

In Paramecium, digestion happens in food vacuoles as well. Food particles are engulfed by cilia, forming a food vacuole that fuses with lysosomes to digest the food using enzymes.

Is the movement of chlamydomonas smooth or jerky?

The movement of Chlamydomonas is smooth. It moves using two whip-like structures called flagella, which allow it to navigate through its aquatic environment in a relatively controlled manner.

What type of locomotion do protozoa have?

Protozoa exhibit various types of locomotion, including flagellar movement (whipping motion with flagella), ciliary movement (using hair-like cilia for propulsion), and amoeboid movement (crawling using pseudopods or cell extensions). The specific type of locomotion employed by a protozoan species depends on its structural adaptations and environmental conditions.

What does paramecium possess that counteracts the effect of osmosis?

Paramecium possess contractile vacuoles that help regulate water content within the cell and prevent it from bursting due to excess water entering through osmosis. These vacuoles actively pump out water to maintain a stable internal environment.

Where can you find a picture of an animated amoeba?

You can find one in the "Prentice Hall" microbiology science book.
Response:
You can find an animated gif [http://huntertrek.com/wp/wp-content/uploads/2008/02/amoeba.gif here]

When a chemical is added to a microscope slide with a live paramecium the paramecium moves away from the chemical This movement is an example of?

Negative chemotaxis, which refers to the movement of an organism away from a chemical stimulus. In this case, the paramecium is exhibiting a negative response by moving away from the chemical added to the microscope slide.

Is genital warts a protozoa?

Genital warts are caused by a virus, not a protozoa.

What is the economic importance of euglena?

Euglena is a micro organism, so it economic importance is contradicting because it is sometimes heterotrophy (like animals) and autrotrophy (like plant). It contain chlorophyll for food production to plants in water and it has some carotenoid pigments thats produces sugers by photosynthesis and in turn produces oxygen

Is Plasmodium a heterotroph?

It is a heterotroph, which means it makes its own food. "Autotroph" mean that it makes its own food.<-- old answer

corrected answer: It is a heterotroph, which means it doesn't makes its own food. It must consume other heterotrophs or autotrophs. "Autotroph" mean that it makes its own food

What is the macronucleus and micronucleus in paramecium?

The macronucleus is larger and controls all functions except reproduction. The micronucleus is smaller and controls reproduction. Some paramecium have more than one micronucleus, but all have at least one.

What is a protozoan with two nuclei that moves using cila?

Paramecium is a protozoan with two nuclei (macronucleus and micronucleus) and moves using cilia. Cilia are hair-like structures that beat back and forth to propel the organism through its aquatic environment.