11. Ubiquinone is a key electron carrier in the electron transport chain of cellular respiration . 12. Chemical modes focus on interrupting biologically significant processes such as cellular respiration or diffusion capacity. 13. It is an inhibitor of cellular respiration by blocking the respiratory chain at complex II. 14. Plant components are consumed by animals and fungi, and used as fuel for cellular respiration . 15. An example of an exergonic reaction is cellular respiration . 16. Roots that are not killed outright may also switch to less oxygen-hungry forms of cellular respiration . 17. This process is called Cellular Respiration .-- Tollwutig 18 : 39, 3 April 2006 ( UTC) 18. In biology, electron donors release an electron during cellular respiration , resulting in the release of energy. 19. Thus, in birds, saccadic eye movements appear to be important in retinal nutrition and cellular respiration . 20. They produce CO 2 during regular Cellular respiration .