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Graph that shows voltage fluctuations resulting from ionic current within the neurons of the brain [3] Neuroscience: Electrocardiogram: Graph of voltage versus time of the electrical activity of the heart [4] using electrodes placed on the skin: Physiology: Identification key: Used to identify a specimen organism from a set of known taxa. [5 ...
A bioassay is an analytical method to determine the potency or effect of a substance by its effect on living animals or plants (in vivo), or on living cells or tissues (in vitro). [1] [2] A bioassay can be either quantal or quantitative, direct or indirect. [3] If the measured response is binary, the assay is quantal; if not, it is quantitative ...
The Gene Ontology (GO) provides a system for hierarchically classifying genes or gene products into terms organized in a graph structure (or an ontology).The terms are groups into three categories: molecular function (describing the molecular activity of a gene), biological process (describing the larger cellular or physiological role carried out by the gene, coordinated with other genes), and ...
Biology portal; To get a detailed description of the various methods see protein methods and nucleic acid methods. Besides the aforementioned groups of techniques, biotechnology also includes plant tissue culture methods, animal cell culture methods, and microbial fermentation methods.
Molecular genetics is a branch of biology that addresses how differences in the structures or expression of DNA molecules manifests as variation among organisms. Molecular genetics often applies an "investigative approach" to determine the structure and/or function of genes in an organism's genome using genetic screens.
Phylogenetic comparative methods (PCMs) use information on the historical relationships of lineages (phylogenies) to test evolutionary hypotheses. The comparative method has a long history in evolutionary biology; indeed, Charles Darwin used differences and similarities between species as a major source of evidence in The Origin of Species .
The history of scientific method considers changes in the methodology of scientific inquiry, not the history of science itself. The development of rules for scientific reasoning has not been straightforward; scientific method has been the subject of intense and recurring debate throughout the history of science, and eminent natural philosophers and scientists have argued for the primacy of ...
Language acquisition is the process by which humans acquire the capacity to perceive and comprehend language.In other words, it is how human beings gain the ability to be aware of language, to understand it, and to produce and use words and sentences to communicate.