Question

possible points: 1
during periods of intense exercise, cells do not receive enough oxygen to perform the normal process of aerobic cellular respiration. as a result, the cells resort to anaerobic respiration, which produces only 1/20th of the energy produced during the aerobic process. this alternative version of cellular respiration produces lactic acid as waste, which results in muscle soreness.
which of the following statements does the above information support?
cellular respiration is affected by the availability of reactants.
cellular respiration is affected by cell hydration.
cellular respiration is affected by sugar production.
cellular respiration is affected by temperature.

Explanation:

The passage states that during intense exercise, cells lack enough oxygen (a reactant for aerobic respiration), so they switch to anaerobic respiration. This shows that the availability of reactants (oxygen) affects cellular respiration. The other options (cell hydration, sugar production, temperature) are not mentioned as factors in the given information.

Answer:

A. Cellular respiration is affected by the availability of reactants.