What role do glucose and oxygen play in cellular respiration?
a. they are reactants because they are present before the reaction.
b. they are reactants because they are present after the reaction.
c. they are products because they are present before the reaction.
d. they are products because they are present after the reaction.

Which level of consumer had access to the smallest apply of energy

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.

The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen