Question

The carriers for the electron transport system are located ______

• A. within the cytoplasm of a cell
• B. on the cristae of mitochondria
• C. within the matrix of mitochondria
• D. within the Golgi apparatus

Answer 1

The correct option is B

on the cristae of mitochondria

A crista is a fold in the inner membrane of a mitochondrion.​​​​​​ ​
Cristae are studded with proteins, including ATP synthase and a variety of cytochromes.
They increase the surface area of the inner membrane on which the electron transport takes place.
The high surface area allows greater capacity for ATP generation.