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3.5: Respiración Verdadera

Última actualización

29 oct 2022
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- 3.4: Vía C4
- 4: Multicelularidad, el ciclo celular y el ciclo de vida

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El error común sobre las plantas es que su único proceso metabólico relacionado con la energía es la fotosíntesis:

CO $_2$ + H $_2$ O + $\longrightarrow$ carbohidratos energéticos + O $_2$

Sin embargo, como la mayoría de los eucariotas, las plantas tienen mitocondrias en las células y utilizan respiración aeróbica (relacionada con el oxígeno) para obtener energía:

carbohidratos + O $_\mathbf{2}$ $\longrightarrow$ CO $_\mathbf{2}$ + H $_\mathbf{2}$ O + energía

Por lo general, las plantas gastan mucho menos oxígeno en la respiración que en la fotosíntesis. Sin embargo, por las noches las plantas hacen exactamente lo mismo que los animales, ¡y solo hacen dióxido de carbono!

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