A: The corneal reflex is an involuntary closing of the eyelids when the cornea is touched by a foreign object. The function of this reflex is to protect the eye from damage. Absence of a corneal reflex may indicate damage to the fifth and seventh cranial nerves, which mediate the reflex.
Cellular respiration is the process by which the chemical energy of food molecules is released and partially captured in the form of ATP. Carbohydrates, fats, and proteins can all be used as fuels in cellular respiration, but glucose is most commonly used as an example to examine the reactions and pathways involved.
Photosynthesis and cellular respiration are complementary reactions. Cellular respiration is the process by which most cells make energy. The products of photosynthesis, oxygen and glucose, are the reactants of the cellular respiration reaction.In turn, the products of cellular respiration, carbon dioxide and water, are the reactants in photosynthesis.ave. Flickr.com. Photosynthetic organisms use light energy from the sun to transform two reactants, carbon dioxide and water, into sugar and oxygen gas. Green plants, algae and some bacteria can perform photosynthesis and are responsible for oxygenating the Earth's atmosphere.