20. In which organelle does cellular respiration occur? A.Chloroplast B.ATP and NADPH C.Cytoplasm D.Mitochondria
Answer: Option D Solution: 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.
