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  2. Lotka–Volterra equations - Wikipedia

    en.wikipedia.org/wiki/Lotka–Volterra_equations

    The Lotka–Volterra system of equations is an example of a Kolmogorov population model (not to be confused with the better known Kolmogorov equations), [ 2 ][ 3 ][ 4 ] which is a more general framework that can model the dynamics of ecological systems with predator–prey interactions, competition, disease, and mutualism.

  3. System of linear equations - Wikipedia

    en.wikipedia.org/wiki/System_of_linear_equations

    The intersection point is the solution. In mathematics, a system of linear equations (or linear system) is a collection of two or more linear equations involving the same variables. [1][2] For example, is a system of three equations in the three variables x, y, z. A solution to a linear system is an assignment of values to the variables such ...

  4. Tonicity - Wikipedia

    en.wikipedia.org/wiki/Tonicity

    Tonicity. In chemical biology, tonicity is a measure of the effective osmotic pressure gradient; the water potential of two solutions separated by a partially-permeable cell membrane. Tonicity depends on the relative concentration of selective membrane-impermeable solutes across a cell membrane which determine the direction and extent of ...

  5. Purine - Wikipedia

    en.wikipedia.org/wiki/Purine

    Purine is a heterocyclic aromatic organic compound that consists of two rings (pyrimidine and imidazole) fused together. It is water -soluble. Purine also gives its name to the wider class of molecules, purines, which include substituted purines and their tautomers.

  6. Osmosis - Wikipedia

    en.wikipedia.org/wiki/Osmosis

    Osmosis is the movement of a solvent across a semipermeable membrane toward a higher concentration of solute. In biological systems, the solvent is typically water, but osmosis can occur in other liquids, supercritical liquids, and even gases. [11][12] When a cell is submerged in water, the water molecules pass through the cell membrane from an ...

  7. Binomial nomenclature - Wikipedia

    en.wikipedia.org/wiki/Binomial_nomenclature

    In taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages.

  8. DNA extraction - Wikipedia

    en.wikipedia.org/wiki/DNA_extraction

    DNA extraction. The first isolation of deoxyribonucleic acid (DNA) was done in 1869 by Friedrich Miescher. [1] DNA extraction is the process of isolating DNA from the cells of an organism isolated from a sample, typically a biological sample such as blood, saliva, or tissue. It involves breaking open the cells, removing proteins and other ...

  9. Triviality (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Triviality_(mathematics)

    Triviality (mathematics) In mathematics, the adjective trivial is often used to refer to a claim or a case which can be readily obtained from context, or an object which possesses a simple structure (e.g., groups, topological spaces). [1][2] The noun triviality usually refers to a simple technical aspect of some proof or definition.