Question

Where is the electron transport chain located in bacterial cells?

1) Plasma membrane
2) Periplasm
3) Mitochondrial inner membrane
4) Mitochondrial outer membrane

Answer 1

The electron transport chain in bacterial cells is found in the plasma membrane, as bacteria do not have mitochondria.

Step-by-step explanation:

The electron transport chain in bacterial cells is located in the plasma membrane. Unlike eukaryotic cells, which have mitochondria with inner and outer membranes where the electron transport chain is located on the inner mitochondrial membrane, bacteria, as prokaryotes, do not have mitochondria. Therefore, the necessary functions for aerobic respiration, such as the electron transport chain, take place on the bacterial cell's plasma membrane using integral proteins embedded in it.