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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
How ingestion takes in amoeba?
Amoebas take in food particles by surrounding them with their cell membrane, forming a food vacuole. The food vacuole then fuses with lysosomes containing enzymes that digest the food into nutrients that can be absorbed by the cell. Once digestion is complete, the remaining waste is expelled from the cell.
In what ways do sponges show evolutionary advancement compared to a colonial protozoan?
Sponges are multicellular organisms, whereas colonial protozoans are unicellular. This multicellularity in sponges allows for specialized cell types and division of labor, leading to increased efficiency and complexity in their structure and function. Sponges also possess differentiated tissues and exhibit more diverse body plans than colonial protozoans, demonstrating a higher level of evolutionary advancement.
What does a freshwater protozoan use to pump excess water out of its body?
Hats off for the beautiful question! There is osmolarity inside the protozoa. The water will enter by osmosis inside the cell. The protozoa must be spending most of the energy to take out the water out of the cell body. The protozoa probably create the vacuole inside the cell. The water molecules are secreted in the vacuole. This requires energy. The vacuole is opened to exterior to drive out the water. The process is repeated continuously.
What strangely named type of mackerel is also known as an Ono in Hawaii?
The type of mackerel known as "Ono" in Hawaii is actually called the Wahoo. It is a fast-swimming, predatory fish known for its streamlined body and sharp teeth. Wahoo is prized for its firm, mild-flavored flesh, making it a popular choice for seafood dishes.
Amoebas are single-celled organisms that lack a fixed shape or structure. They often appear as irregularly shaped blobs that move by extending projections of their cell membrane called pseudopods. Amoebas can be microscopic or visible to the naked eye depending on the species.
How does protozoa cause diseases?
Protozoa variants, such as amoebiasis cause diseases by secreting enzymes which absorbed by the tissue of the host.
Why is it more common to find protozoa in a hay infusion than bacteria?
The protozoa are larger and easier to see. There are a lot more bacteria because after all they are what the protozoa are feeding on but they at the very limit of resolution for most light microscopes. They are also less obvious because most don't move.
How do amoebas digest their food?
They engulf food particle by phagocytosis. The food vacuoles fuse with lysosomes, and the enzymes digest the food. Undigested material is later remove by exocytosis.
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They have structures called vacuoles in their cytoplasm.
These are like movable stomachs made of cell wall material..
The food is enclosed, enzymes are secreted within the vacuole.
Nutrients are absorbed through the walls.
Then the vacuole moves to the surface of the cell and the unusable
contents are discarded.
Is plasmodium vivax is eukaryotic or prokaryotic?
Plasmodium vivax is a eukaryotic parasite. Eukaryotic organisms have their genetic material enclosed in a nucleus, while prokaryotic organisms do not have a nucleus.
How do pelecypods obtain food?
Pelecypods obtain their food from the water that flows through their bodies.
Light sensitivity in euglena is provided by the eyespot True or False?
Yes, light sensitivity in euglena is provided by the eyespot.
Why are amoebas considered eukaryote?
Amoebas are considered eukaryotes because they have a nucleus enclosed within a membrane, as well as other membrane-bound organelles such as mitochondria and Golgi apparatus. Eukaryotes have more complex cell structures compared to prokaryotes, which lack these membrane-bound organelles.
What is the name for the mouth of the paramecium?
Paramecium have an oral groove that is connected to a cytopharynx that leads to a food vacuole.
Which organism normally uses contractile vacuole to help maintain water balance?
Protists, in general, and the paramecium in particular. These filament surrounded vacuoles, powered by motor proteins and ATP, allow the paramecium to exist in hypotonic conditions by sloughing off the water entering the cell and avoiding cell lysis.
Paramecia are single cell organisms usually less than one hundredth inch long. They are a genus of protozoa of the phylum Ciliophora. They feed mostly on bacteria.
Paramecium is a member of a group of unicellular slipper shaped ciliate protozoa called Paramecia.
Is euglena a producer or a consumer?
It is a consumer because it uses its cilia to sweep food into its gullet.
What are the features of a Protozoa?
eukaryot
unicellular
size 10 to 52 micrometers but can be large to 1 milimeter but xenophyophores are protozoa of size 20 centimeter
having plant like behaviour of photosynthesis
