If you're are talking about a human, well, All human cells undergo cellular respiration. Cellular respiration produces Adenosine Triphosphate(the currency of a cell) that is needed for metabolic processes to occur within the cell. read more
Yes, all cells undergo cellular respiration aside from viruses. Cellular respiration is required by all cells in order to obtain energy. Viruses don't undergo cellular respiration, so they don't have metabolism. As a result, they are considered dead. read more
When a plant's cells use respiration, they intake oxygen and produce energy and carbon dioxide as a by-product. During the day, plants undergo photosynthesis in the chloroplasts of their cells. This process uses light, water and carbon dioxide and produces both cellular energy and oxygen. read more