The electron transport chain (ETC), or respiratory chain, is linked to proton mo

Question

The electron transport chain (ETC), or respiratory chain, is linked to proton movement and ATP synthesis. Select the statements that accurately describe the electron transport chain. Choose all that apply. Electron transfer in the ETC is coupled to proton transfer from the matrix to the intermembrane space. Electron carriers are organized into four complexes of proteins and prosthetic groups. The outer membrane of mitochondria is readily permeable to small molecules and hydrogen ions. Prosthetic groups, such as iron-sulfur centers, are directly involved with electron transfer. Electrons generated by the citric acid cycle in the mitochondrial matrix enter the ETC. Electron carriers in the mitochondrial matrix include ubiquinone (coenzyme Q), FMN, and cytochrome c. The reactions of the ETC take place in the outer membrane of mitochondria.

Explanation / Answer

These are the correct answers.

Electron carriers are organized into four complexes of proteins and prosthetic groups.

The outer membrane of mitochondria is readily permeable to small molecules and hydrogen ions.

Electron transfer in the ETC is coupled to proton transfer from the matrix to the intermembrane space.

Electrons generated by the citric acid cycle in the mitochondrial matrix enter the ETC.

Prosthetic groups, such as iron-sulfur centers, are directly involved with electron transfer.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.