Sulfanilamides interfere with hints sulfanilamides interfere with protein synthesis in fungi protein synthesis in helminths folic acid synthesis in bacteria anaerobic metabolism in protozoa

Folic acid synthesis in bacteria

Sulfanilamide is known to be sulfonamide antibiotic with a wide spectrum against most gram -ve and gram +ve organisms. Thus, sulfonamide is a competitive inhibitor of dihydropteroate synthetase a bacterial enzyme that uses parabenzoic acid (PABA) for the synthesis folic acid. However, inhibition of this enzyme by sulfonamide will prevent the synthesis of folic acid which is very important for bacterial replication. Similarly, sulfonamides inhibit the multiplication of bacteria by acting as competitive inhibitor of PABA.

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.