Comment upon active absorption of minerals. from Biology Mi

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31.  Give the role of minerals.
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32. In what condition nitrogenases functions?
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33. Write a note on nutrient deficiency symptoms in plants.
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34. Name the mineral constituent of cytochrome.
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37. Mention the significance and disdvantages of hydroponics.
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38.  Comment upon active absorption of minerals.


Active absorption of minerals is the transportation of mineral against its concentration gradient by the use of energy in the form of ATP molecules. The entry or exit of ions to and from the symplast requires requires energy. The inward movement of the ions are called influx and the outward movement is called efflux. 
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