definition of univalve shell
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MOLLUSK univalve (mollusk) a class of mollusks typically having a 1-piece coiled shell and flattened muscular foot with a head bearing stalked eyes. animal noun (animals and microorganisms) univalves.
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- For example the median expected annual pay for a typical Environmental Compliance Specialist in the United States is $68,241 so 50% of the people who perform the job of Environmental Compliance Specialist in the United States are expected to make less than $68,241. Source: HR Reported data as of October 2015.
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Definition of 'mollusc' mollusk definition, mollusk meaning | English dictionary. mollusc. n any invertebrate of the phylum Mollusca, having a soft unsegmented body and often a shell, secreted by a fold of skin (the mantle). The group includes the gastropods (snails, slugs, etc.), bivalves (clams, mussels, etc.), and cephalopods (cuttlefish, octopuses, etc.)
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- More on morphology. Bivalves are most easily recognized by their two shells (hence bi-valv-ia). Their shells are comprised of a pair of laterally-compressed hinged valves and the pallial cavity surrounds the whole body.
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UNICOM From Wikipedia, the free encyclopedia. A UNICOM (Universal Communications) station is an air-ground communication facility operated by a non-air traffic control private agency to provide advisory service at uncontrolled aerodromes and airports and to provide various non-flight services, such as requesting a taxi, even at towered airports.
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- A spherical cavity is hollowed out of the interior of a neutral conducting sphere. At the center of the cavity is a point charge, of positive charge .
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Gas-to-liquids Shell’s gas-to-liquids (GTL) technology converts natural gas – the cleanest-burning fossil fuel – into high-quality liquid products that would otherwise be made from crude oil. These products include transportation fuels, motor oils and the ingredients for everyday necessities like plastics, detergents and cosmetics.
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What is a symbiotic relationship? There are five different kinds of symbiotic relationships: 1  Mutualism, where both species benefit. 2  Commensalism, where one species benefits, the other is unaffected. 3  Parasitism, where one species benefits, the other is harmed. 4  Competition, where neither species benefits.5  Neutralism, where both species are unaffected.he hydra species and Green Algae are an example of a symbiotic relationship. The Algae gets nutrients from the Hydra (nitrogen Source), and the Hydra gets the products of pho … tosynthesis and has better growth performance.
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Mineral Oils Ultraviolet Absorption PhosLube – Mineral Oils Untraviolet Absorption. Ultraviolet absorption (UV absorption) is used to detect polynuclear aromatic hydrocarbons in mineral oil. Polynuclear aromatic hydrocarbons are carcinogens and detecting them is imperative. The test itself is the measurement of absorbance over a specific wavelength range.ltraviolet absorption (UV absorption) is used to detect polynuclear aromatic hydrocarbons in mineral oil. Polynuclear aromatic hydrocarbons are carcinogens and detecting them is imperative.
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- mol·lusk. n. Any of numerous chiefly marine invertebrates of the phylum Mollusca, typically having a soft unsegmented body, a mantle, and a protective calcareous shell, and including the snails, clams, and squids.
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Unicellular Organisms: Definition & Examples Unicellular organisms are composed of a single cell, unlike multicellular organisms that are made of many cells. This means that they each live and carry out all of their life processes as one single cell.Most unicellular organisms are microscopic; however, some are visible to the naked eye.ll prokaryotes, most protists, and some fungi are unicellular. Some of these organisms do live in large colonies, but each individual cell is a simple living organism.
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Nuclear membrane Nuclear membrane. Definition. noun. The double-layered membrane surrounding the nucleus of a eukaryotic cell, separating the nucleoplasm from the cytoplasm. Supplement. It is made up of two layers, each composed of a lipid bilayer.It is perforated with holes, called nuclear pores, to facilitate and regulate the exchange of materials (for example, proteins and RNA) between the nucleus and the cytoplasm. In between these two membranes is a space called perinuclear space.upplement. It is made up of two layers, each composed of a lipid bilayer. It is perforated with holes, called nuclear pores, to facilitate and regulate the exchange of materials (for example, proteins and RNA) between the nucleus and the cytoplasm. In between these two membranes is a space called perinuclear space.
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- Unicellular organism. A unicellular organism, also known as a single-celled organism, is an organism that consists of only one cell, unlike a multicellular organism that consists of more than one cell.
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- Unicellular organism. A unicellular organism, also known as a single-celled organism, is an organism that consists of only one cell, unlike a multicellular organism that consists of multiple cells. Historically the simple single celled organisms have sometimes been referred to as monads.
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- Definition of ultimobranchial in US English - relating to or denoting a gland in the neck which in many lower vertebrates regulates the calcium level in the body. Definition of ultimobranchial in US English - relating to or denoting a gland in the neck which in many lower vertebrates regulates the calcium level in the body. dictionary thesaurus
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Installing and using OpenVZ on CentOS 5 OpenVZ is operating system-level virtualization based on a modified Linux kernel that allows a physical server to run multiple isolated instances known as containers, virtual private servers (VPS), or virtual environments (VE).
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- The shell of a bivalve is composed of calcium carbonate, and consists of two, usually similar, parts called valves. These are joined together along one edge (the hinge line) by a flexible ligament that, usually in conjunction with interlocking teeth on each of the valves, forms the hinge.
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Electron shell Valence shell. The valence shell is the outermost shell of an atom in its uncombined state, which contains the electrons most likely to account for the nature of any reactions involving the atom and of the bonding interactions it has with other atoms.
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Lithosphere Lithosphere. A lithosphere ([lithos] for rocky, and [sphaira] for sphere) is the rigid, outermost shell of a rocky planet, and can be identified on the basis of its mechanical properties. lithosphere n: the solid part of the earth consisting of the crust and outer mantle [syn: {geosphere}].
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Yeast A unicellular organism, also known as a single-celled organism, is an organism that consists of only one cell, unlike a multicellular organism that consists of more than one cell.Historically the simple single celled organisms have sometimes been referred to as Monads.rokaryotes, most Protista, and some fungi, are unicellular. Although some of these organisms live in colonies, they are still unicellular. These organisms live together, and each cell in the colony is the same. However, each individual cell must carry out all life processes to survive.
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Bivalvia The Bivalvia, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, comprise a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts.he shell of a bivalve is composed of calcium carbonate, and consists of two, usually similar, parts called valves. These are joined together along one edge (the hinge line) by a flexible ligament that, usually in conjunction with interlocking teeth on each of the valves, forms the hinge.
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What are unicellular organisms? A unicellular organism is such an organism which only contains one cell, ie, the whole organism is just one cell. It could be an animal (plasmodiums), a plant (algae) or neither (a bacteria). This page may be out of date.
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Gastropoda Sinauer Associates, Sunderland, MA. The Class Gastropoda includes the snails and slugs. Most gastropods have a single, usually spirally coiled shell into which the body can be withdrawn, but the shell is lost or reduced some important groups.Gastropods are characterized by torsion, a process that results in the rotation of the visceral mass and mantle on the foot.The result is that the mantle cavity (including anus) lies in the anterior body, over the head and mouth, and the gut and nervous system are twisted.astropods are characterized by torsion, a process that results in the rotation of the visceral mass and mantle on the foot. The result is that the mantle cavity (including anus) lies in the anterior body, over the head and mouth, and the gut and nervous system are twisted.
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Unicellular Organisms Unicellular Organisms. Some living organisms are made up of once cell only, these are called unicellular. These organisms have a large surface area to volume ratio and rely on simple diffusion to meet their needs. An example of a unicellular animal is Amoeba. All seven life processes take place inside this one cell. Amoebas are found in ponds and ditches. They move by changing their shape, they push out pseudopodia in the direction they want to move and the rest of the cell flows after them.
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Unicellular Organisms: Definition & Examples Unicellular Organisms Defined. Unicellular organisms are composed of a single cell, unlike multicellular organisms that are made of many cells. This means that they each live and carry out all of their life processes as one single cell. Most unicellular organisms are microscopic; however, some are visible to the naked eye.
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- Bivalve. Bivalve. 1. (Science: marine biology) a mollusk having a shell consisting of two lateral plates or valves joined together by an elastic ligament at the hinge, which is usually strengthened by prominences called teeth.ivalve; bi- (L. Bis) _ valve valve. Please contribute to this project, if you have more information about this term feel free to edit this page. This page was last modified on 3 October 2005, at 21:16.This page has been accessed 7,992 times.