Question

most of cellular respiration takes place inside the __, as long as there is __ present. options: chloroplast; oxygen, mitochondria; carbon dioxide, chloroplast; carbon dioxide, mitochondria; oxygen

Explanation:

To solve this, we recall cellular respiration concepts:

1. Organelle for Respiration: Cellular respiration (aerobic) mainly occurs in the mitochondria (chloroplasts are for photosynthesis, so eliminate options with chloroplast).
2. Required Substance: Aerobic respiration needs oxygen (not carbon dioxide, which is a product of respiration). Thus, the correct pair is mitochondria (site) and oxygen (required substance).

Answer:

mitochondria; oxygen (the option with this text, likely the orange - colored option at the bottom right, but based on content, the answer is the choice with "mitochondria; oxygen")