why is pfiesteria known as the cell from hell?
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This one-celled dinoflagellate, Pfiesteria piscicida (scientists call it "the cell from hell"), was responsible for wiping out fish and closing down fishing areas and shellfish beds.
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Clue cells are epithelial cells of the vagina that get their distinctive stippled appearance by being covered with bacteria. The etymology behind the term "clue" cell derives from the original research article from Gardner and Dukes describing the characteristic cells.
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Prokaryotic cell. a cell that lacks a nucleus and other membrane bound organelles; includes achaea and bacteria.
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The Elodea plant and the individual paramecium cell are both organisms because they can live on their own. The individual Elodea cell, although it shows signs of life, is not an organism.
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The cells of all prokaryotes and eukaryotes possess two basic features: a plasma membrane, also called a cell membrane, and cytoplasm. However, the cells of prokaryotes are simpler than those of eukaryotes. For example, prokaryotic cells lack a nucleus, while eukaryotic cells have a nucleus.
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Eukaryotic cells are generally much larger than prokaryotic ones and this difference in volume has several implications. First bigger cells can afford to have more things stored in the cytoplasm. This means it is not as costly to a eukaryotic cell to have structures taking up space.
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Kupffer Cell. Kupffer cells (KCs) are macrophages that reside in sinusoids in proximity to ECs. They serve a physiological function to remove senescent cells and particulates, including bacteria and their products.
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All cells fall into one of these two broad categories. Only the single-celled organisms of the domains Bacteria and Archaea are classified as prokaryotes—pro means before and kary means nucleus. Animals, plants, fungi, and protists are all eukaryotes—eu means true—and are made up of eukaryotic cells.
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The bitunicate ascus, also referred to as fissitunicate, is formed in fruit bodies called pseudothecia that resemble perithecia or other types of fruit body. Important pathogens that form bitunicate asci include species of Cochliobolus, Mycosphaerella, Pleospora, and Venturia.
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In multicellular organisms each cell performs specific functions , this is known as specialisation of the cell. ... The process by which cells gets specialised is known as differentiation and those cells are known as differentiated cells.
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In some unicellular eukaryotic organisms (e.g., amoeba), cellular wastes, such as ammonia and excess water, are excreted by exocytosis as the contractile vacuoles merge with the cell membrane, expelling wastes into the environment.
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Although it is just one cell, it has adaptations that let it behave a bit like an animal: it produces pseudopodia (“false feet”) that let it move about. its pseudopodia can surround food and take it inside the cell.
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The cytoplasm (also known as cytosol) is the protoplasm of a cell outside the cell nucleus. It is the jelly-like material plus the organelles outside the nucleus, and inside the cell membrane.
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PBMCs are blood cells with round nuclei that encompass a heterogeneous cell population comprising various frequencies of lymphocytes (T cells, B cells, and NK cells), dendritic cells, and monocytes (Table 1).
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Inferno (Italian: [iɱˈfɛrno]; Italian for "Hell") is the first part of Italian writer Dante Alighieri's 14th-century epic poem Divine Comedy. It is followed by Purgatorio and Paradiso. The Inferno tells the journey of Dante through Hell, guided by the ancient Roman poet Virgil.
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Lysosomes are known as suicide bags of the cell because they contain lytic enzymes capable of digesting cells and unwanted materials. When lysosomes burst, the lytic enzymes within the organelle spill all over the cell, rupturing the cell membrane or cell wall and inducing the death of the cell.
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The name "white blood cell" derives from the physical appearance of a blood sample after centrifugation. White cells are found in the buffy coat, a thin, typically white layer of nucleated cells between the sedimented red blood cells and the blood plasma. The scientific term leukocyte directly reflects its description.