Question

question 17 (1 point)
this diagram is of a mitochondria. which label shows the site of the electron transport chain?

label a
label b
label c
label d

Explanation:

The electron transport chain (ETC) occurs in the inner mitochondrial membrane (the cristae, which are the folds of the inner membrane). In the diagram, Label B represents the inner mitochondrial membrane (where the cristae are located, and ETC complexes are embedded). Label A is the outer membrane, Label C is the matrix (where the Krebs cycle occurs), and Label D is the intermembrane space. So the site of the electron transport chain is Label B.

Answer:

B. Label B