If the amount of oxygen required by your muscles during a workout exceeds your aerobic capacity, your muscle cells will .

anaerobic respiration

Explanation:

In the absence of oxygen that is responsible for pulling electrons down the transport chain for ATP generation, oxidative phosphorylation ceases. The cell switches to anaerobic respiration or fermentation

So during strenuous exercise the muscles lacks oxygen. Muscles cells switches to anaerobic condition that convert pyruvate to lactate by lactate dehydrogenase. Lactate tends to accumulate in the muscles which can cause muscles cramps. To prevent lactate accumulation the muscles reconvert lactate to glucose using the Cori cycle.

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form() .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

it's c (engineer's do their work with mechanical stuff not on any living being)