Question

write any two biological importance of Group 1 and Group 2.
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Answer 1

Answer:

group 1

(1) Sodium ions are present in all extracellular fluids which transport nutrients to the cells.

(2) The concentration of sodium ion in extracellular fluids regulates the flow of water across the cell membrane.

(3) Sodium ions participate in the transmission of nerve signals.

(4) Potassium ions are within the cells. They are required for synthesis of proteins and in oxidation of glucose.

group 2

1) Magnesium ions are important part of chlorophyll in green plants. (2) Magnesium ions play important role in the synthesis of protein, in regulation of cholesterol level and in the breakdown of glucose and fat molecules. (4) Calcium ions play a role in blood clotting.

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Answer 2

Answer:

Some of the most important biological functions of the group 1 and group 2 metals are due to small changes in the cellular concentrations of the metal ion. The transmission of nerve impulses, for example, is accompanied by an increased flux of Na+ ions into a nerve cell.

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