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Are multicellular organisms unaffected by the surface area volume ratio constraint?
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Tightly bound sheet of cells lining any external or internal surface in multicellular organisms?
epithelium
How does surface tension helps organisms?
Surface tension helps organisms in the sense that it allows for a wide variety of biological phenomena. For instance, some water insects are able to walk on water due to surface tension.
What organisms clean the Earth's surface?
decomposers
Why multicellular organisms need special organs for exchange of gases between their body and their environment?
Our body is made up of prokaryotic cells. These cells are not in the contact with the environment. So the process of diffussion cant make any difference in exchange of gasses between the multicellular boy and environment.
Why is Fes unaffected by a magnet?
FeS is a compound in which iron has lost its properties so it is unaffected by a magnet.
Tightly bound sheet of cells lining any external or internal surface in multicellular organisms?
epithelium
Why must large organisms be multicellular?
Multicellular organisms require specialized organs and systems because in multicellular organisms, different jobs are done by different cells that are specialized, e.g. A blood cell carries oxygen. A nerve cell sends and receives signals. In multicellular organisms different functions are divided among different cells. The cells in multicellular organisms are organized in ways the enables them to survive and reproduce. For any multicellular organism to survive, different cells must work together. The right type of cell must be in the right place to do the work that need to be done.
Why is diffusion insufficient to meet the oxygen requirement for multicellular organisms like human?
In single-celled organisms the entire surface of the organisms is in contact with the environments for the diffusion of substances. In multi-cellular organisms all the cells may not be in direct contact with the surrounding environment. So simple diffusion will not meet the requirements of all the cells.
Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans?
In single-celled organisms the entire surface of the organisms is in contact with the environments for the diffusion of substances. In multi-cellular organisms all the cells may not be in direct contact with the surrounding environment. So simple diffusion will not meet the requirements of all the cells.
Why is diffusion insufficient meet the oxygen requirements of multicellular organisms like humans?
In single-celled organisms the entire surface of the organisms is in contact with the environments for the diffusion of substances. In multi-cellular organisms all the cells may not be in direct contact with the surrounding environment. So simple diffusion will not meet the requirements of all the cells.
How much of the world's surface is unaffected by humans?
either 5-50 percent
Distinguish between unicellular and multicellular organisms?
Unicellular organisms have only one cell. They have a large surface area to volume ratio and rely on simple diffusion to meet their needs. Multicellular organisms have many cells. The cells are specialized and have a certain job to do.
Why are the levels in multicellular organisms not used to describe unicellular?
The levels in multicellular organisms are not used to describe unicellular organisms because they are not very similar to the other levels. They contain different characteristics so they need their own sub levels.
How much of the world's land surface is unaffected by humans?
either 5-50 percent
How do cells of unicellular organisms differ from the cells of multicellular organisms?
uni-cellular organisms create a zygote in cell division and multi-cellular organisms create daughter cells during meiosis or meitosis. so there are no daughter cells in uni-cellular organisms bc they are only one-celled.
Are blue whale cells bigger than human cells?
No, they are not. The surface areas of cell must increase exponentially in order to compensate for the large increase in cell volume, so to solve this problem multicellular organisms simply have more cells as opposed to larger cells.
How does surface tension helps organisms?
Surface tension helps organisms in the sense that it allows for a wide variety of biological phenomena. For instance, some water insects are able to walk on water due to surface tension.
