In each of these groups of statements, only one is correct correct statement and write down its letter. A A Every living cell respires. B Only animal cells respire. DEC The way in which plant cells respire is called photosynthesis. b A Expired (breathed out) air is carbon dioxide. B Expired air contains more carbon dioxide than inspired (breathed in) air. C Expired air contains more oxygen than inspired air. C A Respiration means moving your muscles to draw air into the lungs. B Respiration means the diffusion of gases between the air sacs and the blood. C Respiration means the release of energy from glucose, inside cells.