Respiration In Plants Question 5

Question: Melonate inhibits the growth of pathogenic bacteria by inhibiting the actity of

(1) Succinic dehydrogenase

(2) Amylase

(3) Lipase

(4) Dinitrogenase

Show Answer

Answer: (1) Succinic dehydrogenase

Explaination-

Melonate inhibits the growth of pathogenic bacteria by inhibiting the activity of Succinic dehydrogenase.

Succinic dehydrogenase, also known as succinate dehydrogenase or succinate-coenzyme Q reductase, is an enzyme involved in the electron transport chain and the tricarboxylic acid (TCA) cycle in bacteria. It catalyzes the conversion of succinate to fumarate, playing a crucial role in energy production.

Melonate is a competitive inhibitor of succinic dehydrogenase. It structurally resembles succinate and competes with it for binding to the active site of the enzyme. By binding to and inhibiting succinic dehydrogenase, melonate disrupts the normal functioning of the TCA cycle and electron transport chain, leading to a decrease in ATP production and inhibiting the growth of pathogenic bacteria.