chemotroph definition biology
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- Chemotrophs are organisms that obtain energy by the oxidation of electron donors in their environments. These molecules can be organic (chemoorganotrophs) or inorganic (chemolithotrophs). The chemotroph designation is in contrast to phototrophs, which utilize solar energy. Chemotrophs can be either autotrophic or heterotrophic. Chemoautotrophs are commonly found in ocean floors where sunlight cannot reach them because they are not dependent on solar energy.
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autotroph noun, Biology. 1. any organism capable of self-nourishment by using inorganic materials as a source of nutrients and using photosynthesis or chemosynthesis as a source of energy, as most plants and certain bacteria and protists. Compare heterotroph.
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Saprophyte A saprophyte or saprotroph is an organism which gets its energy from dead and decaying organic matter. This may be decaying pieces of plants or animals. This means that saprophytes are heterotrophs. They are consumers in the food chain. This is the typical life-style of fungi.
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- . saprophytic is............ any organism that lives on dead organic matter, as certain fungi and bacteria. Also called saprobe A saprotroph (or saprobe) is an organism that obtains its nutrients from non-living organic matter, usually dead and decaying plant or animal matter, by absorbing soluble organic compounds.
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- Cheetah (Acinonyx jubatus) Acinonyx jubatus portrait. Organism: The cheetah is a big cat and is now, mainly found in southern Africa. It is known for its speed as it is able to accelerate from 0-60 miles per hour in only three seconds, and it is able to reach speeds of around 70 miles per hour (112 kilometers per hour).
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Autotroph Autotrophs can be photoautotrophs or chemoautotrophs. Phototrophs use light as an energy source, while chemotrophs utilize electron donors as a source of energy, whether from organic or inorganic sources; however in the case of autotrophs, these electron donors come from inorganic chemical sources.
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What Is Chemotaxis? You won't believe these 10 facts about people. Chemotaxis is movement of small organisms and single cells in response to chemical signals in the surrounding environment.uring fetal development, chemotaxis also plays a role in the movement of cells as the organism develops; budding nerve cells, for example, start to distribute themselves to map out the nervous system.
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- Chemotrophs are organisms that obtain energy by the oxidation of electron donors in their environments. These molecules can be organic or inorganic. The chemotroph designation is in contrast to phototrophs, which utilize solar energy. Chemotrophs can be either autotrophic or heterotrophic. Chemotrophs are commonly found in ocean floors where sunlight cannot reach them because they are not dependent on solar energy. Ocean floors often contain underwater volcanos that can provide heat to substitut
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- A chemoautotroph is an archaea that make their food using chemical energy rather than energy from sunlight.hototrophs-plants and algae, use the sun's en … ergy and photosynthesis. Chemoautotrophs-are all bacteria capable of capturing their energy for producing nutrients from chemical processes like hydrothermal vents in the ocean. There are also chemotrophs who are heterotrophic-consuming other organisms, too.
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How to waste Â£445 billion? â The Failure of Quantitative Easing (VIDEO) In 2010 the governmentcancelled a program to rebuild 715schools, because they’d run out of money. But at the sametime the Bank of England had created £445 billion of new money through a program called Quantitative Easing. Instead of this money being spent … Continue reading →
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Chemosynthesis Chemosynthesis. Chemosynthesis is a process certain organisms use to produce energy, akin to photosynthesis, but without the utilization of sunlight.The energy comes from the oxidization (burning) of chemicals which seep up from the Earth's crust.hemosynthesis. Chemosynthesis is a process certain organisms use to produce energy, akin to photosynthesis, but without the utilization of sunlight.
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Cell Membrane Definitions 2. the gradual difference in the concentration of solutes in a solution between two regions. In biology, a gradient results from an unequal distribution of ions across the cell membrane. When this happens, solutes move along a concentration gradient.This kind of movement is called diffusion.. the gradual difference in the concentration of solutes in a solution between two regions. In biology, a gradient results from an unequal distribution of ions across the cell membrane. When this happens, solutes move along a concentration gradient.
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Cheetah The cheetah /ˈtʃiːtə/ is a large felid of the subfamily Felinae that occurs mainly in eastern and southern Africa and a few parts of Iran. It is the fastest land animal. The only extant member of the genus Acinonyx, the cheetah was formally described by Johann Christian Daniel von Schreber in 1775. The cheetah is characterised by a slender body, deep chest, spotted coat, small rounded head, black tear-like streaks on the face, long thin legs and long spotted tail. Its lightly built ...
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Animal locomotion Animal locomotion. Animal locomotion, in ethology, is any of a variety of movements or methods that animals use to move from one place to another. Some modes of locomotion are (initially) self-propelled, e.g., running, swimming, jumping, flying, hopping, soaring and gliding.
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Animal Tissues and organs can thus evolve. The semirigid cell walls found in plants and fungi, which constrain the shape and hence the diversity of possible cell types, are absent in animals. If they were present, nerve and muscle cells, the focal point of animal mobility, would not be possible. A definition of animals A characteristic of members of the animal kingdom is the presence of muscles and the mobility they afford. Mobility is an important influence on how an organism obtains nutrients for growth and reproduction.
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chemoautotrophic chemoautotrophic or chemotrophic (of an organism) capable of manufacturing organic molecules from carbon dioxide and water by a process of CHEMOSYNTHESIS. For example, Thiobacillus oxidizes hydrogen sulphide to sulphur in order to produce the energy for chemosynthesis.
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- Chemiosmosis is central to the metabolism of many types of cells: a methane-producing prokaryote living in an anaerobic swamp; a heart muscle cell burning glucose in the presence of O 2; and a clover leaf mesophyll cell using sunlight to synthesize sugars.
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Study Outline 1 Chemotrophic microorganisms not only vary in terms of their energy source, but also in terms of their electron acceptors.  If an organic energy source is oxidized and degraded without the use of an exogenous electron acceptor, the process is called fermentation.
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Lithotroph Lithotrophs are a diverse group of organisms using inorganic substrate to obtain reducing equivalents for use in biosynthesis or energy conservation via aerobic or anaerobic respiration. Known chemolithotrophs are exclusively microorganisms; no known macrofauna possesses the ability to use inorganic compounds as energy sources. Macrofauna and lithotrophs can form symbiotic relationships, in which case the lithotrophs are called prokaryotic symbionts. An example of this is chemolithotrophic bac
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Lithotroph An example of this is chemolithotrophic bacteria in giant tube worms or plastids, which are organelles within plant cells that may have evolved from photolithotrophic cyanobacteria-like organisms. Lithotrophs belong to either the domain Bacteria or the domain Archaea.
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locomotion Full Definition of LOCOMOTION. 1. : an act or the power of moving from place to place. 2. See locomotion defined for English-language learners.See locomotion defined for kids.ADVERTISEMENT.edical Definition of LOCOMOTION. : an act or the power of moving from place to place: progressive movement (as of an animal body).
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- 4. (Biology) biology able to exist under more than one set of environmental conditions Compare obligate 4: a facultative parasite can exist as a parasite or a saprotroph. 5. of or relating to a faculty. (ˈfaek ˈfæk əlˌteɪ). tɪv. adj
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Gravitropism Geotropism (also known as gravitropism) is a turning or growth movement by a plant or fungus in response to gravity.It is a general feature of all higher and many lower plants as well as other organisms.hat is, roots grow in the direction of gravitational pull (i.e., downward) and stems grow in the opposite direction (i.e., upwards). This behavior can be easily demonstrated with any potted plant.
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chemosynthesis chemosynthesis. (biochemistry). The synthesis of organic compounds from carbon dioxide by microorganisms using energy derived from chemical reactions.
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chemotaxis Positive chemotaxis is movement toward the source of the chemical stimulus (along the chemical concentration gradient in air or water); negative chemotaxis is movement away from the source. The phenomenon is known to exist in a number of microorganisms and invertebrates.
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Lithotroph There is a fairly large variation in the types of inorganic substrates that these microorganisms can use to produce energy. The chemolithotrophs that are best documented are aerobic respirers, meaning that they use oxygen in their metabolic process.