There is a limit to how big a cell can get, and that nearly always means we need a microscope to see them, Size is limited by the need for substances to diffuse in and out of the cell. If it gets too big there simply isn't enough surface to allow enough exchange of substances for the cell to maintain its life processes.
Single celled organisms are composed of one cell only. Now a cell is the basis of all organs which are in turn made up of tissue and tissue are ultimately a collection of cells. So single celled organisms are exactly that, they are just cells that perform basic functions.
Because they lack tissues, and they don't have specialized cells.
i think they are because due to single cell having small body structure mostly which r found in the world are micro organisms
Single cell organism are not animals. They are small because... er they are singled celled.
single cell organisms are so small because they have 1 cell
if they were bigger then they are called multi celled organisms not single celled organisms
Because cells are, themselves only visible through a microscope ! Our eyes cannot see objects that small without assistance.
==The Final Answer. . .== Eubacteria is a single celled organism, just like its [so called] twin, Archaebacteria.
well i know that multi cellular organisms have a much more complecated structure and process but a single cellular organism has a process called the cellular resportary syestem and this works well but mostly on small single celled organisms becasue if you had a large organisms the size or dogs then by the time the oxygen from the H2O would get to the nuclei the paramecium or what ever organism you are specifying it would die that is why single celled organisms are so small...size matters
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because single celled organisms can only reach a certain size before imploding and the nucleus can only sustain and control so much.
i am actually telling u the question so why would you say if i can answer it like come on
Organism that have one cell (single celled) are so small, you would need a microscope to see them. So, orchids are multicellular.
==The Final Answer. . .== Eubacteria is a single celled organism, just like its [so called] twin, Archaebacteria.
The cerebrum is part of the brain, so no, it is not a single-celled organism.
well i know that multi cellular organisms have a much more complecated structure and process but a single cellular organism has a process called the cellular resportary syestem and this works well but mostly on small single celled organisms becasue if you had a large organisms the size or dogs then by the time the oxygen from the H2O would get to the nuclei the paramecium or what ever organism you are specifying it would die that is why single celled organisms are so small...size matters
Prokaryotes are single celled organism that have no defined nucleus so it can live in it's own
An Ameba (if i spelled that right lol) is a single celled organism.... as for a vessel, i dont think so.
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Amoeba is a single-celled organism meaning it exists as only one cell and it performs all cell functions alone. Being unicellular means that you are a single-celled organism and so amoeba is unicellular, like all protists.
Villi are so small because they are only made of one cell- they are single celled organisms
Parameciums. They're single celled organisms, so they don't have a brain (Unless you count the nucleus as a brain).
Rust on your fence or rust on your crops? Rust usually, that occurs on metallic objects is iron oxide, it's an inorganic compound so no cells. Unicellular usually refers to organic organisms of single cellular structure. Another 'Rust' is an organism. Do you mean Rust fungus? It is a fungus and produces spores which spread and cause the crop damage, it's not unicellular. It has a complex structure.
An amoeba is a shapeless, unicellular organism. Amoebas eat algae, bacteria, other protozoans, and tiny particles of dead plant or animal matter. Plants are living organisms belonging to the kingdom Plantae. They are not single-celled and there are thought to be 300-315 thousand species of plants. So a main difference is amoeba's are singled-celled, plants are not.