Which of the following elements helps in maintaining the structure of ribosomes?
1. Magnesium
2. Zinc
3. Copper
4. Molybdenum
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. Ferric
2. Ferrous
3. Free element
4. Both ferric and ferrous
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe most abundant intracellular cation is :
1. Ca2+
2. H+
3. K+
4. Na+
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBest defined function of manganese in green plants is
1. Photolysis of water
2. Calvin cycle
3. Nitrogen fixation
4. Water absorption
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following is essential for
photolysis of water ?
1. Boron
2. Manganese
3. Zinc
4. Copper
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn element playing important role in nitrogen fixation is
1. molybdenum
2. copper
3. manganese
4. zinc
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyManganese is required in
1. nucleic acid synthesis
2. plant cell wall formation
3. photolysis of water during photosynthesis
4. chlorophyll synthesis
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA plant requires magnesium for :
1. holding cells together
2. protein synthesis
3. chlorophyll synthesis
4. cell wall development
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFarmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?
1. Frequent irrigation of the crop
2. Treatment of the paints with cytokinins alongwith a small dose of nitrogenous fertilizer
3. Removal of all yellow leaves and spraying the remaining green leaves with 2,4,5-trichlorophenoxy acetic acid
4. Application of iron and magnesium to promote synthesis of chlorophyll
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology