Question

Rotenone is a poison commonly added to insecticides. Rotenone binds tightly with one of the electron carrier molecules in the electron transport chain, preventing electrons from passing to the next carrier molecle. Insects exposed to rotenone will die because
A) they will no longer be able to perform anerobic respiration.
B) high levels of fermentation products will build up in their bodies.
C) they will no longer be able to produce adequate amounts of ATP.
D) they will no longer be able to absorb water and will become dehydrated.

Answer 1

Answer:

The correct answer is A they will no longer be able to perform aerobic respiration.

Explanation:

Rotenone is an isoflavonid compound which act an inhibitor of electron transport chain in mitochondria.Rotenone generally blocks the transfer of electrons from from NADH CoQ dehydrogenase or complex 1 to ubiquinone.

   As electron transport is blocked the reduced coenzymes such as NADH,FADH2 are unable to be oxidized.

 As a result cells exposed to rotenone will no longer be able to perform aerobic respiration.