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"Neurons are cells of the nervous system that send signals. Neurons are classified by function (sensory, motor or interneurons), by structure (multipolar, bipolar or unipolar) and by neuron communicat ...
Video Biología
"The nervous system is a network of neurons that send signals to different parts of an organism's body to coordinate the actions of the organisms. Most animals have two parts to their nervous systems ...
Video Biología
"The Bacteria Kingdom, formerly called monera, are single celled prokaryotic organisms. Bacteria encompass two domains: eubacteria and archaea. Eubacteria and archaea have very different cell walls. T ...
Video Biología
"Natural selection is a theory conceived by Charles Darwin that states that in a population, organisms with a genetic trait that increases the chance of having offspring will pass on their genes to th ...
Video Biología
"The muscular system includes all the muscles in an organism's body and allows organisms to move. A lot of the muscles in the muscular system of vertebrates are controlled by the nervous system. There ...
Video Biología
"The Bohr model is a simple model of atomic structure. It is now outdated, but is still useful at the basic level. An atom has a central core called its nucleus which contains its protons (positively ...
"Mitosis is a type of cell division found in eukaryotic cells. The products of mitosis are daughter cells that are genetically identical to the parent cell with the same set of chromosomes. The differ ...
Video Biología
"Asexual reproduction is a type of reproduction found mostly in prokaryotes. Asexual reproduction doesn’t require fertilization and only one parent cell is needed to reproduce. In achaea and bacteria, ...
"Microevolution is defined as changes within a species that aren't drastic enough to create an entirely new species. Changes that result in a new species are part of macroevolution. Often microevoluti ...
"Meiosis is a type of cell division that produces gametes. In meiosis, cells undergo two divisions. The result of meiosis is the production of four haploid cells from a diploid cell with each haploid ...
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