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"The endoplasmic reticulum is an organelle in which an array of cell functions takes place, notably including the production of proteins, steroids and lipids. Proteins are formed in ribosomes, found i ...
Video Biología
"The endocrine system signals information to help the body function. Each gland in the endocrine system produces a different type of hormone to regulate all the different types of functions in the bod ...
Video Biología
"The sensory system is the part of the nervous system that recognizes and processes sensory information. This system includes sensory receptors, neural pathways and parts of the brain. The sensory sys ...
"The electron transport system is the stage in cellular respiration in which oxidative phosphorylation occurs and the bulk of the ATP is produced. The electron transport system creates an electron gra ...
Video Biología
"Experimentation is the fourth step of the scientific method. Science experiments are necessary to test hypotheses and to form accurate conclusions based on real world results. All branches of science ...
"Ecology is the study of the interactions between organisms and the environment. There are various scales of study in ecology, the largest being at the level of the ecosystem, the next being at the le ...
Video Biología
"RNA Structure is a single strand composed of nucleotides. Unlike DNA it does not form a double helix shape, but it does contain a series of nitrogenous bases (adenine, uracil, guanine and cytosine). ...
"Ecological pyramids are diagrams which show the abundance of organisms at each trophic level along the food chain of an ecosystem. The shapes of ecological pyramids are somewhat triangular in ...
Video Biología
"The intake of oxygen into the lungs and producing carbon dioxide in return is the main function of the respiratory system. The respiratory system includes airways, lungs and respiratory muscles. When ...
Video Biología
"DNA structure is what is called a double helix. DNA consists of two strands of nuclotides connected by pairs of bases. These strands "point" in opposite directions and are twisted into a helix shape. ...
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