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Protists

Protists are unicellular or multicellular microorganisms. The majority of protists are responsible for many diseases in humans.

1,262 Questions

What structures in amoeba and paramecium also occur in plant cells?

Structures such as the Golgi apparatus, mitochondria, and vacuoles that are present in amoeba and paramecium are also found in plant cells. Additionally, both plant cells and these protists contain a cell membrane, cytoplasm, and a nucleus.

Are dinoflagellates larger or smaller than euglena's?

Dinoflagellates are typically larger than Euglena. Dinoflagellates can range in size from 5 to 2,000 micrometers, while Euglena are usually around 50 to 500 micrometers in size.

What does a paramecium caudatum eat?

Paramecium caudatum is a type of protist that feeds on bacteria, algae, and decaying organic matter through a process called phagocytosis. They use their cilia to sweep food particles into their oral groove, where they are engulfed and digested.

How many flagella do dinoflagellates have?

Their two flagella help them move in wet, damp, and moist places. They are two long, whiplike tails.

What is a trichocyst?

A trichocyst is a specialized organelle found in certain ciliate protists that functions in defense. When stimulated, trichocysts discharge long, pointed structures called trichites that can entangle or injure potential predators.

What is the difference between paramecium and elodea cells?

Elodea Is a multicellular celled organism, paramecium is a single organism

Another thing is that Elodea (being multicellular) can not survive on its own

while on the other hand paramecium can

What organisms in kingdom protista are pathogenic?

I'm looking in my textbook and it says that these are harmful pathogenic organisms in Kingdom Protista: Sarcodina: Entamoeba Histolytica Coli, which is often spread through contaminated water. That's why when you go to foreign countries they say, "Don't drink the water!" Entamoeba Histolytica causes severe dysentery, nausea, exhaustion, diahrrea, and sometimes even death! So be careful! Mastigophorites are also pathogenic. A small fly known as the tsetse fly carries mastigophorites that belong to the genus trypanosoma, which causes African Sleeping Sickness, a disease which often leads to death. Balantidium Coli is a species of ciliophorathat is a parasitic pathogen of animals such as rats, pigs, and guinea pigs. The animal eats or drinks a substance contaminated with this and it is transfered to the animal or even the person. The coli feeds off of the animal/human's fecal matter (poop) , resulting in severe dysentery. It is not common in the US, but is very common in tropical regions of the world where malnutritioned people and pigs live in close proximity of one another. Hope this helps you ! Love always, your friend, April R.
Plasmodium, toxoplasma and E. histolytica.

How does an amoeba mate?

An amoeba dosen't technically mate.There is a type of asexual reproduction called binary fission where it duplicates its genetic material then splits to form to identical parts. It's a form of cloning.

Are plasmodium unicellular or multi-cellular?

Plasmodium is a unicellular parasite that causes malaria in humans. It goes through multiple stages of its life cycle in both the mosquito vector and human host, but at its core, it is a single-celled organism.

Can an amoeba become large enough to eat NYC?

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Is an Amoeba alive or dead?

An amoeba is a living organism. It is a single-celled microscopic organism that carries out essential life processes such as feeding, moving, and reproduction.

What are the predators of amoeba?

Predators of amoeba include other microscopic organisms such as ciliates, flagellates, and some types of algae. These predators consume amoebas as a food source, helping to regulate their population in aquatic environments.

How does reproduction occur in amoeba?

Amoeba's reproduce through asexual reproduction. Inside the cell the nucleus will divide through a process called mitosis. Then the cytoplasm and outer membrane divide and pull apart to create a new cell.

How can you tell if a protist is a producer?

Protists that are producers typically contain chloroplasts, allowing them to photosynthesize and produce their own food using sunlight, water, and carbon dioxide. These protists are usually green in color due to the presence of chlorophyll. Additionally, they release oxygen as a byproduct of photosynthesis.

What are characteristics of amoeba?

Amoebas are single-celled organisms with a flexible cell membrane that allows them to change shape. They move by extending and retracting pseudopods, or "false feet." Amoebas are found in various aquatic environments and feed on bacteria and other small organisms.

How does the contractile in a paramecium help maintain homeostasis?

The contractile vacuole in a paramecium excretes excess freshwater in the organism. It does this continually because water is constantly diffusing into their cytoplasm. This occurs because freshwater paramecium live in a hypotonic environment.

Would a spherical protist or a cylindrical protist have a higher surface area to volume ratio?

A cylindrical protist has a higher surface are to volume ratio. This is because of the physical properties of spheres (some rather complicated math proves that spheres hold the most volume for their area).

Does amoeba have chlorophyll?

No, amoebas do not have chlorophyll. Amoebas are single-celled organisms that obtain their nutrients by engulfing and digesting other organisms or organic matter through a process called phagocytosis. Chlorophyll is a pigment found in plants and some photosynthetic organisms that is essential for photosynthesis, a process that produces energy using sunlight.

How are some protists like plants?

Some protists, like algae, are photoautotrophic and can perform photosynthesis like plants. They contain chlorophyll and use sunlight to produce their own food. Additionally, both protists and plants can have cell walls for support and protection.

What is the difference between paramecium and euglena?

The parameceum can reproduce asexually and sexuallly while the other can only do it asexually. they have diifferent structures and the euglena has a flagellum while the paramecium has cilia and they eat differently. The paremecium uses the cilia to get a water current going and the food gets sucked in, and the euglena uses photosynethesis by using its stigma to indicate areas of light and if not then it will just get food like the other.

What cell does amoeba come from?

Amoebas come from a single-celled organism known as a protist. They are part of the phylum Amoebozoa, which includes various species of amoebas that are typically found in freshwater environments.

What is the Name of the substance that amoeba releases in pond water?

The substance released by amoeba in pond water is called pseudopodia. These are temporary projections of the cell membrane that help the amoeba move and capture food.

How do amoebas adapt?

As with any organism there may be small differences between individuals. In any situation some individuals will be more likely to survive, and these will be the ones who reproduce and the population gradually becomes more like those individuals.

How do diatom eat?

Diatoms are photosynthetic organisms that obtain their energy from sunlight, using chlorophyll pigments to carry out photosynthesis. They also absorb nutrients from their environment, such as nitrates, phosphates, and silicates, to support their growth and reproduction. Diatoms have specialized structures, such as silica cell walls and organelles called raphes, which help them take in and process these nutrients.