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Variety in Biological Definition

Biology

... Biology studies the variety of life (clockwise from top-left) E. coli , ... principle of biology 1.3 Diversity: the variety of living organisms 1.4 Continuity: the common ... evolutionary timeline . Diversity: the variety of living organisms A phylogenetic ...

Bacterium

... mats . Metabolisms Bacteria show a wide variety of different metabolisms . Heterotrophs ... identification Bacteria come in a wide variety of shapes: A. Rod-shaped B. Round-shaped or ... Tree of Bacteria Bacteria come in a variety of different shapes. Most are rod-shaped, ...

Bacterium

... mats . Metabolisms Bacteria show a wide variety of different metabolisms . Heterotrophs ... identification Bacteria come in a wide variety of shapes: A. Rod-shaped B. Round-shaped or ... Tree of Bacteria Bacteria come in a variety of different shapes. Most are rod-shaped, ...

Photosynthesis

... various accessory pigments give them a wide variety of colors, located inside chloroplasts. All ... them. The other photosynthetic bacteria have a variety of different pigments, called ... ATP and NADPH produced by photosynthesis drive a variety of other biochemical processes. In plants, the ...

Molecular biology

... a cell, and the protein can now be expressed. A variety of systems, such as inducible promoters and ... can be tested for enzymatic activity under a variety of situations, the protein may be crystallized so ... or donkey. These antibodies can be used for a variety of analytical and preprative techniques. In ...

Nutrition

... that our needs are best met through eating a wide variety of fresh, unprocessed and unmanufactured food. ... has shown that the Japanese tend to eat a greater variety of different foods every day than Westerners (27 ... of good nutrition, so that in general a wide variety of unprocessed food is recommended as a natural ...

Photosynthesis

... various accessory pigments give them a wide variety of colors, located inside chloroplasts. All ... them. The other photosynthetic bacteria have a variety of different pigments, called ... ATP and NADPH produced by photosynthesis drive a variety of other biochemical processes. In plants, the ...

Bioinformatics

... to infer gene regulation: one might compare microarray data from a wide variety of states of an organism to form hypotheses about the genes involved in ... to determine which genes are co-expressed. Further analysis could take a variety of directions: one 2004 study analyzed the promoter sequences of ...

Bioinformatics

... to infer gene regulation: one might compare microarray data from a wide variety of states of an organism to form hypotheses about the genes involved in ... to determine which genes are co-expressed. Further analysis could take a variety of directions: one 2004 study analyzed the promoter sequences of ...

Culture

... term to a broader definition of culture that they could apply to a wider variety of societies. Attentive to the theory of evolution , they assumed that ... arbitrary, conventional sets of meaning, which took concrete form in a variety of artifacts such as myths and rituals , tools , the design of ...

Diabetes mellitus

... and coronary artery disease . Type 2 diabetes was formerly known by a variety of partially misleading names, including "adult-onset diabetes", ... in full recovery, though death can result from inadequate treatment or a variety of complications. Hyperosmotic diabetic coma Hyperosmotic ...

Ethyl alcohol

... has UN 1986. Use Ethanol is used as a fuel and in a wide variety of industrial processes. Ethanol is also used in antifreeze products for ... in perfumes , paints and tinctures . Alcoholic drinks have a large variety of tastes because various flavor compounds are dissolved during brewing ...

Eukaryote

... prokaryotes, typically a thousand times by volume. Usually, they have a variety of internal membranes and structures, called organelles , and a ... animal cell Internal membranes Eukaryotic cells include a variety of membrane-bound structures, collectively referred to as the ...

Extinction

... organizations attempt to preserve recognized endangered species through a variety of conservation programs. Species which are not extinct are termed ... in the popular novel and movie Jurassic Park . Causes There are a variety of causes that can contribute directly or indirectly to the extinction of ...

Eye

... detects light . Different kinds of light-sensitive organs are found in a variety of creatures. The simplest eyes do nothing but detect whether the ... have been of little use, and light-sensitive organs are present in a variety of different creatures without any clear evolutionary link. However, eyes ...

Cell membrane

... and cell adhesion proteins . There are also other proteins with a variety of functions. These membrane proteins are important for the regulation of ... carbohydrates attached to their extracellular domains. Cells may vary the variety and the relative amounts of different lipids to maintain the fluidity of ...

Immune system

... harmful non-self and harmless non-self is a difficult problem, and a variety of human disorders arise from failures of discriminatory systems (see ... activity follows complement activation; this cascade can result in a variety of effects including opsonization of the pathogen, destruction of the ...

Ion channel

... by chemical or electrical signals, or mechanical force, depending on the variety of channel. Biological role Because "voltage-gated" channels ... work by plugging ion channel pores. But ion channels figure in a wide variety of biological processes that involve rapid changes in cells. In the search ...

Joint

... amphiarthrosis - permit little movement. diarthrosis - permit a variety of movements (e.g. flexion , adduction , pronation ). Only synovial ... joints , such as in the carpals of the wrist. These joints allow a wide variety of movement, but not much distance. Hinge joints , such as the elbow ...

Mitochondrion

... is composed of about 50% phospholipids by weight and contains a variety of enzymes involved in such diverse activities such as the oxidation ... A mutation in the genes regulating any of these functions can result in a variety of mitochondrial diseases . Energy conversion As stated above, the ...

Mitochondrion

... is composed of about 50% phospholipids by weight and contains a variety of enzymes involved in such diverse activities such as the oxidation ... A mutation in the genes regulating any of these functions can result in a variety of mitochondrial diseases . Energy conversion As stated above, the ...

Polymerase chain reaction

... yeast . PCR is commonly used in medical and biological research labs for a variety of tasks, such as the detection of hereditary diseases , the ... PCR technique. Uses of PCR PCR can be used for a broad variety of experiments and analyzes. Some examples are discussed below. ...

Cell membrane

... and cell adhesion proteins . There are also other proteins with a variety of functions. These membrane proteins are important for the regulation of ... carbohydrates attached to their extracellular domains. Cells may vary the variety and the relative amounts of different lipids to maintain the fluidity of ...

Protein

... proteins can be made in an all vegan diet by eating a sufficient variety of foods and by getting enough calories. It was once thought that in order ... acids in sufficient quantities. Omnivores typically eat a sufficient variety of foods that this is not an issue, however, vegetarians and especially ...

Adenosine triphosphate

... by nucleoside diphosphokinase : Energy is released when hydrolysis of the phosphate-phosphate bonds is carried out. This energy can be used by a variety of enzymes , motor proteins , and transport proteins to carry out the work of the cell. Also, the hydrolysis yields free inorganic phosphate and ...

Albinism

... the eyes, skin and hair. It is an inherited condition arising from the combination of recessive genes passed from both parents of an individual. A variety of problems with photosensitivity in eyesight and skin usually result from the condition. This article is intended to cover mainly human albinism, ...

Alcohol

... that 'hangs' in the nasal passages. Ethanol in the form of alcoholic beverages has been consumed by humans since pre-historic times, for a variety of hygienic, dietary, medicinal, religious, and recreational reasons. While infrequent consumption of ethanol in small quantities may be harmless or ...

Antibody

... of the monomer. The two variable domains bind the antigens they are specific for and that elicited their production. The ability to bind a wide variety of foreign antigens arises from events know as somatic recombination. This is when genes are selected (variable (V), diversity (D) and joining (J) ...

Apoptosis

... has grown spectacularly. In addition to its importance as a biological phenomenon, defective apoptotic processes have been implicated in a very wide variety of diseases. As will also be explained in this article, too much apoptosis causes cell-loss disorders, while too little results in uncontrolled cell ...

Archaea

... up to 200 μm in length. They occur in various shapes, such as spherical, rod-shaped, spiral, lobed, or rectangular. They also exhibit a variety of different types of metabolism. Of note, the halobacteria can use light to produce ATP , although no Archaea conduct photosynthesis with an ...

Avian influenza

... humans. Such a subtype could cause a global influenza pandemic , similar to the Spanish Flu that killed over 20 million people in 1918 (though a variety of sources quote average figures even higher, up to 100 million in some cases). Many health experts are concerned that a virus that mutates to the ...

Biodiversity

... use by people, assuring environmental sustainability . As a consequence, biologists argued that this measure is likely to be associated with the variety of genes. Since it cannot always be said which genes are more likely to prove beneficial, the best choice for conservation is to assure the ...

Biomechanics

... a sufficiently high frequency, tetany occurs, and the contracticle force appears constant through time. This allows skeletal muscle to develop a wide variety of forces. This muscle type can be voluntary controlled. Hill's Model is the most popular model used to study muscle. Cardiac Muscle ...

Bone

... illnesses afflict human bones, for example osteoporosis and cancer . The joints can be affected by arthritis . Cut and polished bone from a variety of animals is sometimes used as material for jewelry and other crafts. Terminology General Features Process a relatively ...

Biophysics

... but the questions are asked at a molecular (i.e. low Reynolds number ) level. By drawing knowledge and experimental techniques from a wide variety of disciplines (as described below), biophysicists are able to indirectly observe or model the structures and interactions of individual molecules ...

Botany

... 4 Bibliography 5 External links Scope and motivation of botany As with other life forms in biology, plant life can be studied at a variety of levels, from the molecular , genetic and biochemical level through to organelles , cells , tissues , organs and the biodiversity of ...

Cancer

... available for certain types of cancer, including breast and colon cancer. Coping with cancer There are many local organizations that offer a variety of practical and support services to people with cancer. Support can take the form of support groups , counseling , advice, financial assistance, ...

Cellular respiration

... It does not require oxygen. True anaerobic respiration involves an electron acceptor other than oxygen. Bacteria are capable of using a wide variety of compounds as terminal electron acceptors in respiration: nitrogenous compounds (such as nitrates and nitrites), sulfur compounds (such as ...

Chromosome

... Genetic counseling is offered for families that may carry a chromosome rearrangement. The gain or loss of chromosome material can lead to a variety of genetic disorders . Examples include: Cri du chat syndrome , which is caused by the deletion of part of the short arm of chromosome 5. ...

Cladistics

... Introduction 2 Cladistic methods 3 Cladistic classification 4 See also 5 External links Introduction Based on a wide variety of information, which includes genetic analysis, biochemical analysis, and analysis of morphology , treelike relationship-diagrams called ...
Other Contents
(Date:7/29/2014)... book that brings together two of the major disciplines ... of insect fossils through stunning photographs and unique illustrations. ... E Jepson, details the incredible preservation and diversity of ... for what these remarkable fossils can tell us about ... of our planet. Like the mosquito in Jurassic Park, ...
(Date:7/28/2014)... 100 drugs already approved by the U.S. Food and ... the growth of certain bacterial pathogens inside human cells, ... spotted fever. The findings, published in mBio , ... Microbiology, demonstrate a new way of identifying non-antibiotic drugs ... , A handful of drugs on the list inhibit ...
(Date:7/28/2014)... States have a circulatory problem of the legs called ... even require surgery in serious cases. This disease can ... limb amputation. , At The University of Texas Health ... a non-surgical preventative treatment in a mouse model of ... circulation. Their proof-of-concept study appears in the journal ...
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(Date:7/29/2014)... rates rise in association with extremely hot weather. The ... 2003, for example, resulted in about 22,000 extra deaths. ... at the Institute of Epidemiology II at the Helmholtz ... the number of deaths caused by cardiovascular disease in ... temperatures in the study. , "Our findings confirm the ...
(Date:7/29/2014)... handle stressful situations better than others, and it,s ... show differences in how they respond. , Researchers ... brains of genetically identical mice that predicts how ... , The findings, published July 29 in ... prevent potential consequences of chronic stress -- such ...
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