Autotroph and heterotroph cells always respire with oxygen (from photosynthesis), only photoautotrophs have photosynthetic cells (can only occur in daylight)
Day (Spring/Summer, temperate climates); Photosynthesis rate > Respiration rate, CO_2 diffuses in and O_2 out and Night; Only respiration, CO_2 diffuses out and O2 in
Dawn and dusk (low light); Photosynthesis rate = Respiration rate so no net diffusion of O_2 and CO_2 (compensation point)
O_2 produced by photosynthesis in chloroplasts diffuses out of chloroplasts and into mitochondria, (for respiration) or diffuses into leaf air spaces to be stored for diffusion into other cells
CO_2 produced by respiration in mitochondria diffuses out of mitochondria and into chloroplasts, (for photosynthesis) or diffuses into leaf air spaces to be stored for diffusion into other cells
Autotroph and heterotroph cells always respire with oxygen (from photosynthesis), only photoautotrophs have photosynthetic cells (can only occur in daylight)
Day (Spring/Summer, temperate climates); Photosynthesis rate > Respiration rate, CO_2 diffuses in and O_2 out and Night; Only respiration, CO_2 diffuses out and O2 in
Dawn and dusk (low light); Photosynthesis rate = Respiration rate so no net diffusion of O_2 and CO_2 (compensation point)
O_2 produced by photosynthesis in chloroplasts diffuses out of chloroplasts and into mitochondria, (for respiration) or diffuses into leaf air spaces to be stored for diffusion into other cells
CO_2 produced by respiration in mitochondria diffuses out of mitochondria and into chloroplasts, (for photosynthesis) or diffuses into leaf air spaces to be stored for diffusion into other cells
