Quimica De La Vida
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Transcript of Quimica De La Vida
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Composición Química de la Materia Viva
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Estructura de la materiaEstructura de la materia● La materia consiste de elementos químicos de forma
pura en combinación llamados compuestos.● Organismos compuestos de materia (cualquier cosa
que ocupe espacio y tenga masa).● Diversas formas de materia (rocas, metales, aceites,
gases y humanos).● Elemento (92): sustancia que no puede
descomponerse a otras sustancias por reacciones químicas.
● Compuesto: Sustancia que consiste de dos o más elementos distintos combinados en una proporción fija.
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Elementos esenciales para la vida
● 25 de los 92 elementos naturales son esenciales para la vida.
● Los elementos traza se requieren en mínimas cantidades
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Las propiedades de los elementos dependen de la estructura de los átomos
●Número atómico●Masa atómica●Isótopos
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Enlace CovalenteEnlace Covalente
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Enlaces iónicosEnlaces iónicos
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AguaAgua
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Agua: EstructuraAgua: Estructura
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Puentes de hidrógeno
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DD HH AA
D: DonadorA: AceptorH:Hidrógeno
Puente de hidrógeno
Estructura del agua líquida
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Estructura del Hielo
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Función Biológica
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Solvente universal
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Glucosa
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Calor específico.
Cohesividad.
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Densidad
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Sales minerales● Las que se disocian en presencia de agua, producen
despues de la disociación cationes y aniones.
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Carbohidratos
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Lípidos
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Aminoácidos y ProteínasAminoácidos y Proteínas
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Enzimas
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Ácidos Nucleicos
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