Answer:
The correct answer is c. It enables the rapid transfer of electrons, thereby increasing the efficiency of proton pumping.
Explanation:
Having three complexes will increase efficiency due to the fact that these complexes are connected, being more efficient in proton pumping.
Taste bitter is not the defining characteristic of an acid.
<h3>What is the definition of acids?</h3>
Acids are a type of substance that is very present in our daily lives. For Chemistry, they are substances that release H+ ions in an aqueous solution, decreasing its pH.
In this case, is a characteristic of an acid the turn litmus red, reacts with bases to form salts and react with metals to form H2 gas.
See more about acids at brainly.com/question/14072179
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