What are ion channels ? from Biology Mineral Nutrition

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11. Name two sulphur containing amino acids.
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12. What is theultimate product of nitrogen fixation?
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13. What is meant by outer-space of cells?
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14. What are ion channels ?


The ion channels are transmembrane proteins that function in tranporting specific ions through them and controlling their flow across the membrane. The passive movement of ions into the apoplast

usually occurs through ion-channels,

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15. What is leghaemoglobin ?
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16. What are bacteroids ?
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17. What are haustoria ?
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18. Gold is found in stem of which plant ?
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 Multiple Choice QuestionsShort Answer Type

19. Which ion is most commonly existing as free ion ?
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20. Name the nitrifying bacteria in the soil. Why are they called chemoautotrophs ?
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