Question

Which statement among A-D regarding respiration is false?

a.Respiration is accompanied by the presence of an electron transport system
b.Respiration relies on redox proteins arranged in order of strong electron acceptors to progressively stronger electron donors at the end.
c. The formation of numerous, reduced electron carriers (e.g., NADH) occurs during respiration.
d. Respiration results in oxidative phosphorylation.
e. None of A-D is false; all are true

Answer 1

The false statement regarding respiration is that it relies on redox proteins arranged from strong electron acceptors to stronger electron donors, while in reality, it is from weaker to stronger electron acceptors.

Step-by-step explanation:

The statement that is false concerning respiration is option B. It states that respiration relies on redox proteins arranged in order of strong electron acceptors to progressively stronger electron donors at the end. This is incorrect as in the electron transport system (ETS), redox proteins are arranged with electron carriers moving from a more negative redox potential to those with a more positive redox potential. This means that the electron flow goes from weaker to progressively stronger electron acceptors, not donors. The electron carriers such as NADH and FADH2 pass their electrons through the ETS, which ultimately contribute to the generation of ATP through oxidative phosphorylation.

Respiration involves the transfer of electrons through a series of redox reactions, which is integral to the cellular respiration process. Aerobic respiration ends with oxygen acting as the final electron acceptor, forming water. In contrast, anaerobic respiration uses alternative final electron acceptors.