Question

Select the true statements about the electron transport chain.

a. The products of the electron transport chain are H 2 O and either NAD + or FAD .

b. In the electron transport chain, a series of reactions moves electrons through carriers.

c. Coenzyme A is a component of the electron transport chain.

d. Coenzyme Q and cytochrome c are components of the electron transport chain.

e. The electron transport chain is an anaerobic process.

Answer 1

Answer:

The true statements are mentioned below-

Statement (b) - In the electron transport chain, a series of reactions moves electrons through carriers.

Statement (d) - Coenzyme Q and cytochrome c are components of the electron transport chain.

Explanation: In the Electron Transport Chain the electron is passed through several electron transporters by the means of redox reactions.

Coenzyme Q acts as an electron acceptor (from NADH of complex I and FADH2 of complex II and transfer its electrons to complex III) and Cytochrome C is also an electron transporter(it passes electron from complex III to Complex IV).

The false statements are - Statement (a), (c), and (e).

Explanation:

In statement (a), ATP(the major or final product of ETC) is not mentioned as a product of Electron Transport Chain along with the other byproducts such as NAD+, FAD, and H2O. So this statement is partially correct but is not totally correct.

Statement (c) states coenzyme A as a component of the electron transport chain. Which is not true. Coenzyme A is not involved in Electron Transport Chain.

Electron Transport Chain is an aerobic process that uses Oxygen as a final electron acceptor. So Statement (e) is false.