, lives in New Delhi. I think it must be TAJ MAHAL.because the construction price in 1632 was 32 million rupees. at that time india was super power in world. so if you compare 32millions rupees with today's rupees then taj must be most expensive.
The carbonic anhydrases (or carbonate dehydratases) form a family of enzymes that catalyze the rapid interconversion of carbon dioxide and water to bicarbonate and protons (or vice versa), a reversible reaction that occurs relatively slowly in the absence of a catalyst.
Carbonic anhydrase is a protein that helps regulate the acid-base balance and pH in blood and other animal tissues. It is primarily known for its role in transforming carbon dioxide to bicarbonate to be transported to the lungs. This protein is present in most organisms, from bacteria to plants.