Models

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Model Biology

ATP (Adenosine triphosphate)

Scientific definition

Living organisms take energy in two major forms — autotrophic (photosynthetic) organisms take energy in the form of light, and heterotrophic org ...

analogy Biology

Brain

Scientific definition

The portion of the central nervous system that is located within the skull. It functions as a primary receiver, organizer, and distributor of info ...


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Model Biology

Cell

Scientific definition

The cell is a fundamental biological organizational unit from which almost of all known living beings are built. Cells are the smallest units of l ...


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analogy Biology

Denaturation and renaturation

Scientific definition

Denaturation is a process of changing the spatial structure of nucleic acids and proteins under the influence of high temperature, pressure, acids ...

example Biology

Diffusion

Scientific definition

Diffusion is movement of anything (atom, ions, molecules) through a thin semi-permeable membrane (cell membrane consists of a lipid bilayer) fro ...


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analogy Biology

DNA

Scientific definition

The DNA molecule comprises of two polynucleotide chains. They are curved in the form of a double helix. Inside the spiral are nitrogen bases that ...

example Biology

DNA

Scientific definition

DNA: The deoxyribonucleic acid is a very large, phosphorus- and nitrogen-containing molecule that serves as a carrier of genetic information. ...


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Model Biology

Enzyme

Scientific definition

Enzyme, a substance that acts as a catalyst in living organisms, regulating the rate at which chemical reactions proceed without itself being alte ...


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analogy Biology

Enzymes

Scientific definition

Enzymes are molecules that catalyze the biochemical processes in the cell. They are highly specific, powerful catalysts, each of which catalyzes a ...

Model Biology

Excitation

Scientific definition

An act of irritation or stimulation or of responding to a stimulus, the addition of energy, as the excitation of a molecule by absorption of photo ...


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analogy Biology

Fermentation

Scientific definition

The breakdown of carbohydrates (glucose) into cells of microorganisms without the participation of oxygen is called fermentation.   ...

Model Biology

Forest ecosystem

Scientific definition

A forest ecosystem describes the community of plants, animals, microbes and all other organisms in interaction with the chemical and physical feat ...


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Model Biology

Heredity

Scientific definition

Heredity is individuals’ characteristic to acquire the genetic information (nucleic acids) of their parents and to pass it on to their descendan ...

Model Biology

Heteropolymers

Scientific definition

High molecular weight organic compounds made up of the binding of different units arranged in a certain way. The molecules that bind to each other ...

Model Biology

Immunity

Scientific definition

It is the condition of the vegetal, animal or human organism to resist a particular disease especially by preventing the development of a pathogen ...

Model Biology

IMMUNITY (2)

Scientific definition

It is the process by which phagocytes engulf and break down bacteria or particles.

Model Biology

Metabolism

Scientific definition

Metabolism is the process involving a set of constructive (anabolism) or distructive (catabolism) chemical reactions that modifies a molecule into ...

Model Biology

Mitosis

Scientific definition

Phase in the cell cycle in which the nucleus divides and the DNA is divided. In the subsequent cell division, the genetic material of a cell is di ...


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analogy Biology

Mitosis

Scientific definition

Mitosis is a process of asexual reproduction of eukaryotic cells thanks to which from a single cell 2 genetically identical daughter cells are form ...


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Model Biology

Nerve

Scientific definition

The nerve conducts nerve impulses in organism. It is a category of filamentous bands of  nervous tissues that connects parts of the nervous syste ...

Model Biology

Nucleic acids DNA

Scientific definition

Nucleic acids are macromolecules (consisting of chains of nucleotides) containing the biochemically codified genetic information of a living thing ...

Model Biology

Nucleic acids DNA (2)

Scientific definition

Nucleic acids are macromolecules (consisting of chains of nucleotides) containing the biochemically codified genetic information of a living thing ...

Model Biology

Organ transplantation

Scientific definition

Surgery in which tissue, parts of an organ or the whole organ is taken from one organism (donor) to be placed with a healing intent in another org ...

Model Biology

Pollination

Scientific definition

Pollination is the transfer (natural or artificial) of pollen of the stamen to the stigma of another plant to produce fecundation.   ...


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Model Biology

Pollination (2)

Scientific definition

Pollination is the transfer (natural or artificial) of pollen of the stamen to the stigma of another plant to produce fecundation.   ...


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Model Biology

Pollination (3)

Scientific definition

Pollination is the transfer (natural or artificial) of pollen of the stamen to the stigma of another plant to produce fecundation.   ...

analogy Biology

Respiratory chain

Scientific definition

The respiratory chain is the common path through which all the electrons originating from the most diverse nutrients in the cell are transferred t ...


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Model Biology

Ribosomes

Scientific definition

Ribosomes are machines responsible for the translation of the genetic code of nucleic acids (messenger RNA) into the language of proteins. The rib ...

Model Biology

Solar system

Scientific definition

The solar system is consisting of the sun, the eight planets and their moons, comets, asteroids and meteorites.


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Model Biology

Symbiosis

Scientific definition

Symbiosis is interaction between two different organisms living in close physical association, typically to the advantage of both. It is a mutuall ...

analogy Biology

Synapse

Scientific definition

A synapse is a contact structure for transmitting a chemical or electrical signal from one nerve cell to another nerve cell (interneuronal synapse ...


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example Biology

Thunderstorm

Scientific definition

A discharge of the air electricity of the clouds among themselves or against the earth, accompanied by lightning and thunder, usually accompanied ...


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Model Biology

Tissue

Scientific definition

A tissue is an aggregate (set) of interdependent cells in an organism that have similar origin, shape, structure and function.   ...

Model Biology

Tissue (2)

Scientific definition

A tissue is an aggregate (set) of interdependent cells in an organism that have similar origin, shape, structure and function. ...

Model Biology

Trophic chain

Scientific definition

Trophic chain is a series of organisms interrelated in their feeding habits in an ecosystem in which each species is the food of the next member o ...

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