Question 10.24 Explain the significance of sodium, potassium, magnesium and calcium in biological fluids.
Class XI The s-Block Elements Page 306
Answers
In Plant,chlorophyll is the main pigment for absorption of light. Chlorophyll contains magnesium.
About 99%of body calcium is present in bones and teeth. calcium plays important roles in neuromuscular function, interneuronal
transmission,cellmembrane integrity and blood coagulation
❤.Significane of Na, K in biological fluids.
Na+ ions participate in the transmission of nerve signals.
Na+ ions regulate the flow of blood across the cell membrane.
Na+ ions resonsible for transport of sugars and amino acids into cells.
K+ ions are useful in activating enzymes.
K+ ions participate in the oxidation of glucose to produce ATP.
K+along with Na+ responsible for the transmission of nerve signals.
❤. signicicane of mg2+
mg2+ ions are concentrated in animal cells.
Enzymes like "phosphohydrolases'and 'phospho transferases'contains Mg2+ ions.
These enzymes participate in ATP reactions and release energy in the process Mg2+ forms a complex witg ATP
Mg2+is a constitute of chlorophyll, the green component of plants.
❤.Significance of ca2+
Used in teeths and bones.
used in cogulation of blood.
necessary for muscle contraction.