[Campbell Biology P.210] According to the 'Localization of Enzymes Within the Cell' section ... | Practice Question

According to the 'Localization of Enzymes Within the Cell' section and Figure 8.22, where are the enzymes for the second and third stages of cellular respiration primarily located within the mitochondrion?

  • A: Both stages' enzymes are embedded in the inner membrane.
  • B: Both stages' enzymes are found in solution within the matrix.
  • C: Enzymes for the second stage are in the matrix, while enzymes for the third stage are embedded in the inner membrane.
  • D: Enzymes for the second stage are in the intermembrane space, and third stage enzymes are on the outer membrane.

Explanation

The text states: 'The matrix contains enzymes in solution that are involved in the second stage of cellular respiration.' and 'Enzymes for the third stage of cellular respiration are embedded in the inner membrane.' Figure 8.22 visually confirms these locations.