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Video Biología
"Sex chromosomes are chromosomes that contain information that is used to determine the gender of an organism. The expression of a sex chromosome on an allele can either be X or Y. Organisms with sex ...
"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 ...
Hipervinculo Ciencias de la Tierra y Medioambiente
"Endangered species are defined as a species that is in immediate danger of going extinct. Species become endangered through a number of factors including disease, human activities and competition wit ...
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 ...
Hipervinculo Biología
"Elements and compounds are differentiated by their composition. Elements cannot be decomposed into simpler substances. Compounds are composed of two or more elements, but the chemical identities and ...
"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 ...
Hipervinculo Biología
"The scientific method is a set of guidelines for scientific investigation. It helps us approach all scientific experiments and inquiries methodically and scientifically in order to avoid jumping to c ...
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 ...
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