Question

Bacteria have no membrane-enclosed organelles. However, some still generate ATP through cellular respiration. Where is the electron transport chain found in these organisms?

Answer 1

The correct answer is plasma membrane.

Step-by-step explanation:

Eukaryotes have membrane-bound organelle like chloroplast and mitochondria to make ATP but prokaryotes lack membrane-bound organelle but they also generate ATP.

In bacteria, the plasma membrane is the site of ATP production. The plasma membrane of bacteria contains electrons transport chain that helps in generating ATP for bacterial cell.

The process is the same as in eukaryotes. Proton gradient is formed by the transfer of hydrogen ions across the membrane from the cytosol. ATP is formed when protons are pumped back in cytosol by ATP synthase.

Answer 2

Plasma membrane.

Step-by-step explanation:

Bacteria plasma membrane is made up of phospholipids bilayer, and have all the general functions such as permeability barrier for molecules, for the molecules serving the location into the cell, and helps to store the energy in the form of ATP.

In bacteria electron transport chain helps in transfer electrons with the help of redox reaction from electron donors to electron acceptors, and couple this with the transfer of protons across the plasma membrane. This process creates an electrochemical proton gradient which helps in the synthesis of ATP.