definition of chemosynthetic
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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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photosynthesis Photosynthesis. The manufacture in light of organic compounds (primarily certain carbohydrates) from inorganic materials by chlorophyll-or bacteriochlorophyll-containing cells. This process requires a supply of energy in the form of light. In chlorophyll-containing plant cells and in cyanobacteria, photosynthesis involves oxidation of water (H 2 O) to oxygen molecules, which are released into the environment.
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Chapter 7 photosynthetic—that is, they capture the energy of light rays and transform it into chemical energy that can be used in cell metabolism. Because photosynthetic organisms (algae, plants, some bacteria) produce organic molecules that can be used by themselves and heterotrophs, they form the basis for most food webs. A Group of Chemoautotrophs
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Autotroph Definition. noun, plural: autotrophs. A organism capable of making nutritive organic molecules from inorganic sources via photosynthesis (involving light energy) or chemosynthesis (involving chemical energy) Supplement
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What are chemoautotrophs? By strict definition, a chemoautotroph derives energy from the oxidation of reduced (usually inorganic) molecules (like H2S) and uses Carbon dioxide as its carbon source.o put it in plain English chemoautotrophs are organism (life-forms) usually made of only one cell, that can create their own food (for lack of a better word) from inorganic material around them, without using sunlight.
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diatom Any of various microscopic one-celled or colonial heterokonts of the class Bacillariophyceae that are photosynthetic, have a silica cell wall made up of two interlocking parts, and form an important component of phytoplankton. diatom.
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- 1 autotroph-autotroph autotroph, in biology, an organism capable of synthesizing its own organic substances 2  ... chemosynthesis: meaning and definitions-chemosynthesis: Definition and Pronunciation. 3  autotroph: meaning and definitions-autotroph: Definition and Pronunciation.
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Photosynthetic & Chemosynthetic Autotrophs? From Wikipedia. Autotroph. An autotroph, also called a producer, is an organism that produces complex organic compound s (such as carbohydrate s, fat s, and protein s) from simple inorganic molecules using energy from light (by photosynthesis) or inorganic chemical reactions (chemosynthesis).
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eukaryote noun. The definition of a eukaryote is an organism that uses aerobic cellular respiration to break down compounds including oxygen into cellular energy. An example of a eukaryote is a human or animal cell.ukaryote. a living organism made up of cells with true nuclei that divide by mitosis: in some systems of biological classification, any of a superkingdom (Eukaryotae) of living organisms, including the plants and animals.
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photosynthesis noun, Biology, Biochemistry. 1. the complex process by which carbon dioxide, water, and certain inorganic salts are converted into carbohydrates by green plants, algae, and certain bacteria, using energy from the sun and chlorophyll. Origin of photosynthesis. 1895-1900.
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- These organisms can derive all their cellular carbon from carbon dioxide, and they are thus able to grow without any organic compounds and without light. Such microorganisms are called chemolithotrophs or chemoautotrophs. Chemolithotrophic life is possible in the presence as well as in the absence of molecular oxygen. Processes mediated by chemolithotrophic prokaryotes include nitrification (the formation of nitrate from ammonia), production of sulfuric acid from sulfide and elemental sulfur, and the formation of methane from hydrogen and carbon dioxide.
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chemosynthesis chemosynthesis. chemosynthesis, process in which carbohydrates are manufactured from carbon dioxide and water using chemical nutrients as the energy source, rather than the sunlight used for energy in photosynthesis.Most life on earth is fueled directly or indirectly by sunlight.here are, however, certain groups of bacteria, referred to as chemosynthetic autotrophs, that are fueled not by the sun but by the oxidation of simple inorganic chemicals, such as sulfates or ammonia. Chemosynthetic autotrophs are a necessary part of the nitrogen cycle.
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Chemosynthesis Chemoautotrophs, organisms that obtain carbon through chemosynthesis, are phylogenetically diverse, but groups that include conspicuous or biogeochemically-important taxa include the sulfur-oxidizing gamma and epsilon proteobacteria, the aquificaeles, the methanogenic archaea and the neutrophilic iron-oxidizing bacteria.
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- In each of these situations, chemiosmosis is the process that allows the cell to harvest energy from oxidation reactions and synthesize ATP. In this lesson, you'll learn how chemiosmosis works and the pivotal role it plays in the metabolism of many cell types.
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plant 1. Botany. a. Any of various photosynthetic, eukaryotic, multicellular organisms of the kingdom Plantae characteristically containing chloroplasts, having cell walls made of cellulose, producing embryos, and lacking the power of locomotion. Plants include trees, bushes, herbs, ferns, mosses, and certain green algae.
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- Medical Definition of chemoautotrophic. : being autotrophic and oxidizing some inorganic compound as a source of energy chemoautotrophic bacteria.
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chemosynthesis Since chemosynthetic bacteria control the oxidative parts of the cycle of major elements in the biosphere, they are vitally important in biogeochemistry. Hydrogen bacteria can be used to obtain protein and to free the atmosphere from CO 2 in closed ecological systems.
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Cell Biology chemotaxis. Chemotaxis is a signal transduction system that confers to the ability of cells to respond to spatial and temporal chemical gradients. In prokaryotes and unicellular eukaryotes, chemotaxis controls motile behavior.hemotaxis is a signal transduction system that confers to the ability of cells to respond to spatial and temporal chemical gradients.
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A or phototaxy. noun, Biology. 1. movement of an organism toward or away from a source of light. phototaxis. 1. n. The movement of an organism or a cell toward or away from a source of light.
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Ecology: Organisms and Their Environments Terms Any living organism that makes its own food by converting simple inorganic molecules into complex organic compounds like carbohydrates, fats, and proteins. Autotrophs are often the producers in a food chain or web. Photoautotrophs use energy from light to make food, while chemoautotrophs obtain their energy from chemical reactions. Biomagnification
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- noun, plural: chemoautotrophs. An organism (typically a bacterium or a protozoan) that obtains energy through chemical process, which is by the oxidation of electron donating molecules from the environment, rather than by photosynthesis.Supplement.oun, plural: chemoautotrophs. An organism (typically a bacterium or a protozoan) that obtains energy through chemical process, which is by the oxidation of electron donating molecules from the environment, rather than by photosynthesis. Supplement.
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chemosynthesis The biosynthesis of organic compounds in chemosynthesis is achieved by autotrophic assimilation of CO 2 (Calvin carbon reduction cycle) just as in photosynthesis. Energy is obtained in the form of ATP from electron transfer via the chain of respiratory enzymes incorporated into the bacterial cell membrane.
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Photosynthesis and chemosynthesis are both processes by which organisms produce food; photosynthesis is powered by sunlight while chemosynthesis runs on chemical energy. Photosynthesis occurs in plants and some bacteria, wherever there is sufficient sunlight – on land, in shallow water, even inside and below clear ice. Chemosynthesis is the use of energy released by inorganic chemical reactions to produce food.Chemosynthesis is at the heart of deep-sea communities, sustaining life in absolute darkness, where sunlight does not penetrate. Other bacteria make organic matter by reducing sulfide or oxidizing methane.hemosynthesis is the use of energy released by inorganic chemical reactions to produce food. Chemosynthesis is at the heart of deep-sea communities, sustaining life in absolute darkness, where sunlight does not penetrate.
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Biosynthesis Examples of biosynthesis include photosynthesis, chemosynthesis, amino acid synthesis, nucleic acid synthesis, and ATP synthesis. In particular, photosynthesis is the synthesis of complex organic material using carbon dioxide, water, inorganic salts, and light energy (from sunlight) captured by light-absorbing pigments, such as chlorophyll and other accessory pigments.
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chemosynthesis Chemosynthetic autotrophs are a necessary part of the nitrogen cycle nitrogen cycle,the continuous flow of nitrogen through the biosphere by the processes of nitrogen fixation, ammonification (decay), nitrification, and denitrification.
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- Chloroplast. Definition. noun. Chlorophyll-containing plastid found within the cells of plants and other photosynthetic eukaryotes. Supplement. Within this organelle are disk-shaped structures called thylakoids that function as the site of photosynthesis.