In which organelle does cellular respiration occur?
A
Chloroplast
B
ATP and NADPH
C
Cytoplasm
D
Mitochondria
Correct Answer: Mitochondria
The enzymatic reactions of cellular respiration begin in the cytoplasm, but most of the reactions occur in the mitochondria. Cellular respiration occurs in the double-membrane organelle called the mitochondrion. The folds in the inner membrane are called cristae.