How Many Proton Channels Are Present in Complex III of the Electron

question 7

Multiple Choice

How many proton channels are present in complex III of the electron and H⁺ transport chain?

• A) one
• B) two
• C) three
• D) four

---

Definitions:

Sulfuric Acid

A highly corrosive strong mineral acid with the molecular formula H2SO4, widely used in industry.

Sulfonium Salt

A type of ionic compound that contains a positively charged sulfonium ion (a sulfur atom covalently bonded to three organic groups) and a counter anion.

Mechanistic Path

The sequence of elementary steps that lead to the formation of products from reactants, delineating the specifics of a chemical reaction.

Reagents

Additives or chemical entities added to a system aimed at causing a chemical reaction or to examine the possibility of a reaction occurring.