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...ide") 1 History of zoology 2 Branches of biology relevant to zoology 3 Systems of classificatio...tory of zoology (since Darwin) Branches of biology relevant to zoology The original branches of zoology established in the late 19th century such as...... xenos = foreign) is a speculative field within biology which considers the possible variety of extrater... science fiction as the fictional science of the biology of alien organisms. This use of the term demonstrates the speculative generation of possible model...Virus evolution is a subfield of evolutionary biology that is specifically concerned with the evolution of viruses . Many viruses , in particular RNA viruses , have fairly high mutation rates (on the order of one point mutation or more per genome per round of replication in RNA viruses) and short ......mportant to the study of molecular and cellular biology because they provide simple systems that can be u...vide fundamental information about aspects of cell biology and metabolism. The rapid growth and small genome size of bacteria make them excellent tools for......ures Virus outbreaks See also molecular biology phage , the virus of bacteria / prokaryotes viral plaque Important publications in virology Virus classification...In cell biology , a vesicle is a relatively small and enclosed compartment, separated from the cytosol by at least one lipid bilayer . Vesicles store, transport , or digest cellular products and wastes . This biomembrane enclosing the vesicle is the sa...Some unsolved problems in biology include: Life . How did it start? Is life ... August 2001. Wikibooks Unsolved problems in biology ....Transformation has two meanings in molecular biology : Transformation is the genetic alteration of a cell resulting from the introduction, uptake and expression of foreign DNA . Transformation is also the process by which normal cells are converted into cells that will continue to divide withou...In biology , a trait or character is a genetically inh...nction). This is the Central Dogma of molecular biology as stated by Francis Crick . This information flow may also be followed through the Cell as it ......species first gave coherence to nineteenth-century biology as a descriptive science, Morgan's findings about ...and their location on chromosomes helped transform biology into an experimental science." The centimorgan , a unit of recombinant frequency used in gene ma...Overview of the major events in mitosis In biology , mitosis is the process of chromosome segrega...Prometaphase Main article: Prometaphase Some biology texts do not include this phase, considering it a part of prophase. In this phase, the nuclear memb......protein tertiary structure is known as structural biology . See also: primary structure -- secondary structure -- quaternary structure -- structural biology...Systems biology is an academic field that seeks to integrate bio... ways away. Some scientists have called systems biology " systeomics " or " interactomics ", in analogy with other -omics such as genomics and proteomi...... the surface to a high degree of smoothness. In biology , a substrate is an environment in which an organism lives, and which it feeds on. For example, in many households, a bruised apple is a substrate for the growth of a fungus . In linguistics , a substrate or substratum refers to wor...Structural biology is the study of the architecture and shape of bio... genomics , Important publications in structural biology External links Nature: Structural & Molecular Biology magazine website Structural...In biology , a species is, loosely speaking, a group of rel...ds of years of use, the concept remains central to biology and a host of related fields, and yet also remains at times ill-defined and controversial. Implic...Sociobiology is a branch of biology and also sociology that attempts to throw light upon behavior in both human and non-human societies in terms of evolutionary advantage or strategy . It uses techniques from ethology , evolution , sociology , and population genetics . W...In biology , the skeleton or skeletal system is the biological system providing support in living organisms. (By extension, non-biological outline structures such as gantries or buildings may also acquire skeletons.) Skeletal systems are commonly divide...In biology , signal transduction is any process by which a cell converts one kind of signal or stimulus into another. Processes referred to as signal transduction often involve a sequence of biochemical reactions inside the cell, which are carried out b...In biology , second messengers are low-weight diffusible molecules that are used in signal transduction to relay a signal within a cell . They are synthesized or released by specific enzymatic reactions, usually as a result of an external signal that......n Chemistry . In biochemistry and structural biology , the secondary structure of a protein includes alpha helices , beta sheets , turns , and random coil , among other less common structure. Such structures often can be detected by circular dichroism spectroscopy . Nucleic acids also have......microRNAs . See also Genetics Molecular biology RNA Ontology Consortium...In molecular biology , the term restriction fragment length polymorphism (or RFLP ) is used in two related contexts: as a characteristic of DNA molecules (arising from their differing nucleotide sequences) by which they may be distinguished, and as the laboratory ......o this reversal of the Central dogma of molecular biology . Reverse transcriptase activity outside of retroviruses has been found in almost all eukaryotes, enabling the generation and insertion of new copies of retrotransposons into the host genome. Because reverse transcription is missing the usual "pro......(more below). Many of the procedures of molecular biology and genetic engineering rely on restriction enzymes. The term restriction comes from the fact that these enzymes were discovered in E. coli strains that appeared to be restricting the infection by certain bacteriophages. Restriction enzymes ther...In biology , replication is the act or ability to make a copy. (Mostly commonly meaning molecular replication). Self-replication is the act of a molecule (or any other pattern) making a copy of itself. DNA replication is the act of copying the ...... 3.1 Other examples 4 Redox reactions in biology 5 See also 6 External link Oxidizi...nate or carbon monoxide . Redox reactions in biology Much biological energy is stored and released by means of redox reactions. Photosynthesis invol......nd egg cells (especially in areas of study of biology topics ). It is also referred to as crossing over...ble implication of the term are as follows: In biology , the process of Genetic recombination and meiosis , as summarized above. In chemistry and e......n in which he discussed the debate in theoretical biology over the adaptive benefit of sexual reproduction to those species in which it appears. The connection of the Red Queen to this debate arises from the fact that the traditionally accepted theory ( The Vicar of Bray ) only showed adaptive benefit at...... structure -- tertiary structure -- structural biology -- translation......ics Bioinformatics List of omics topics in biology External links The Proteome Society Bioinformatics Journal Databases: PIR | Swissprot | Pfam......seemed to contradict the " central dogma of modern biology ", which asserts that all living organisms use nucleic acids to reproduce. Prusiner's idea — that a protein (which, unlike DNA , has no obvious means of replication) could reproduce itself — was initially met with skepticism. However, ev...This article is about molecular biology for alternate uses, see primer (disambiguation) ...ymerase. Many laboratory techniques of molecular biology that involve DNA polymerases, such as DNA sequencing and polymerase chain reaction (PCR), requi......n dynamics is the dominant branch of mathematical biology , which has a history of more than 200 years. The early period was dominated by demographic studies such as the work of Benjamin Gompertz and Pierre Franois Verhulst in the early 19th century, who refined and adjusted the Malthusian demograh......phy . Plant and animal populations are studied in biology , in particular in that branch of ecology known as population biology , and in population genetics . In biology, a population denotes a breeding group whose members br......s closely related to biochemistry and molecular biology . External links Plant physiology online study aid Plant physiology scientific journal Bibliography Frank B. Salisbury, Cleon W. Ross Plant physiology Wadsworth, 1992. - ISBN 0534151620 undergraduate textbook in plant physiology...In biology , pigment is any material resulting in color in plant or animal cells which is the result of selective absorption. Some biological material has so-called structural color, which is the result of selective reflection or iridescence , usually don......ing oversimplified and misleading. However, modern biology recognizes numerous connections between ontogeny and phylogeny, explains them using evolutionary theory, and views them as supporting evidence for that theory. See the article on ontogeny and phylogeny . See also PhyloCode Phylogenetic tr......, O = red, glycol C = brown, chain C = grey In biology and chemistry , a lipid bilayer is a membrane or zone of a membrane composed only of lipid molecules. The lipid bilayer is the foundation of all biological membranes , and is a prerequisite of cell-based life . Within a critical range of......rns without any knowledge whatsoever of molecular biology . The interaction between genotype and phenotype has often been described using a simple equation: Phenotype = Genotype + Environment A phenotype is any detectable characteristic of an organism (i.e. structural, biochemical, physiological an......era . Phages play an important role in molecular biology as cloning vectors to insert DNA into bacteria. Phage therapy has been used since the 1940s in the former Soviet Union as an alternative to antibiotics for treating bacterial infections—because killing bacteria is what phages do best....... and draws on techniques from fields such as cell biology , bioinformatics , molecular biology , immunology , genetics and ecology . The parasitic mode of life is the most common on the pl...In evolutionary biology , parallel evolution occurs when two independent species evolve together at the same time in the same ecospace and acquire similar characteristics. A classical example of parallel evolution homoplasy is the contemporaneous evolution of the exti...... of rocks and rock formations, and with botany , biology , zoology , and ecology , fields concerned with ...sic binomial nomenclature scheme devised for the biology of living things by the mid 18th century Swedish biologist Carolus Linnaeus and increasingly s...... 3.1 Other examples 4 Redox reactions in biology 5 See also 6 External link Oxidizi...nate or carbon monoxide . Redox reactions in biology Much biological energy is stored and released by means of redox reactions. Photosynthesis invol......n both sides). Osmosis is an important topic in biology because it provides the primary means by which water is transported into and out of cells . Contents showTocToggle("show","hide") 1 Explanation 2 Example of osmosis 3 Chemical potential 4 Osmotic pressure 5 Reverse osm...... field of research despite its profound impact on biology and human understanding of the natural world. Pr...tter. The term is primarily used in the context of biology and the origin of life. Abiogenesis was long considered to be a very common occurrence until the La...In cell biology , an organelle is one of several structures with specialized functions, suspended in the cytoplasm of a eukaryotic cell . Organelles were historically identified through the use of some form of microscopy and were also identified through the u...In biology , the nucleolus is, strictly speaking, a "suborganelle" of the cell nucleus , which is an organelle . It is a consequence of ribosomal RNA ( rRNA ) synthesis: nucleolar organizers , special regions on some chromosomes that contain multiple ...In biology , nondisjunction is the failure of a chromosome to split correctly during meiosis . This results in the production of gametes which have either more or less of the usual amount of genetic material, and is a common mechanism for trisomy or......e is no distinction between cellular and molecular biology of the brain and of any other organ. However, there are so many differences between the nervous system and the rest of the body, both in terms of cellular functions and the goals of the field, that cellular and molecular neuroscience functions as an...... External links Introduction to evolutionary biology (has a section on natural selection in context of evolution) Darwin's Precursors and Influences. Part 4 -- Natural selection ; by John Wilkins...In biology , a mutagen ( Latin , literally origin of change ) is an agent that changes the genetic information (usually DNA ) of an organism and thus increases the number of mutations above the natural background level. Mutagens are usually chemical ......one of three fundamental aspects of developmental biology along with the control of cell growth and cellular differentiation . Morphogenesis is concerned with the shapes of tissues, organs and entire organisms and the positions of the various specialized cell types. Cell growth and differentiation can t......me an important tool in biochemistry , molecular biology and medicine . Contents showTocToggle("show","hide") 1 Production 2 Applications 2.1 Monoclonal antibodies for cancer treatment 2.2 Chimeric and humanized antibodies 2.3 FDA approved monoclonal antibodies Producti...Molecular genetics is the field of biology which studies the structure and function of gene...s employs the methods of genetics and molecular biology . It is so-called to differentiate it from other sub fields of genetics such as ecological genetic...... taxonomy from the point of view of evolutionary biology . Molecular systematics has been made possible by the availability of techniques for gene sequencing , which allow the determination of the exact sequence of nucleotides or bases in either DNA or RNA. At present it is still a long and expensi...Molecular biology is the study of biology at a molecular level. The field overlaps with other areas of biology , particularly genetics a...Overview of the major events in mitosis In biology , mitosis is the process of chromosome segrega...Prometaphase Main article: Prometaphase Some biology texts do not include this phase, considering it a part of prophase. In this phase, the nuclear memb...In cell biology , a mitochondrion (from Greek mitos thread +...entists in population genetics and evolutionary biology often use data from mitochondrial DNA sequences to draw conclusions about genealogy and evolutio...
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(Date:1/8/2009)...low race cars to take tight turns at high speeds. ...ntages: They are not necessary for basic flight bu...redators. , "To escape a predator, you don,t have...id Tom Eisner, a world authority on animal behavio...man Professor Emeritus of Chemical Ecology at Corn...
(Date:1/7/2009)...ary 7 WCC Smart Search & Match... and match software, today,announced that Tarvind... of,Sales for the ID market. , Mr. Sembhi ...nagement,industry. He was most recently President...le for strategic product development, corporate br...
(Date:1/7/2009)...matase, the key enzyme required for the body to ma... structural biology work done by the Ghosh lab at ...HWI) in Buffalo, New York. Dr. Debashis Ghosh,s s...atase is the first time that scientists have been ...trogen. , In fact, the Ghosh lab has determined...
(Date:1/7/2009)...009 A special issue of American Journal of Medic...ics presents a comprehensive overview of the late...it/Hyperactivity Disorder (ADHD). The issue covers...genetics, underscoring how genetic studies of ADHD...ncover its genetic origins. , ADHD is a complex ...
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(Date:1/8/2009)...nizations offers five action steps to improve resp...ire/ -- Despite the recent three-hour cease fires ... to residents of the Palestinian territory, upward...an water and medical help. U.S.-based internationa...gion see this arrangement to allow sporadic delive...
(Date:1/8/2009)...schle at his confirmation hearing to be the next S...ASHINGTON, Jan. 8 Bipar...nator Tom Daschle, nominee for Department of Healt...fellow BPC founder and friend Senator Bob Dole at ...nvened by the Senate Health, Education, Labor, and...
(Date:1/8/2009)... more effectively than Zocor , , THURSDA...of review, U.S. health officials said Thursday tha...rsial cholesterol-lowering drug Vytorin. , The ...o significant difference in carotid artery thickne...king the drug Zocor. , But, the agency reported...
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