Question

our muscles cells perform........type of respiration during exercise​

Answer 1

Answer:

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our muscles cells perform anaerobic type of respiration during exercise

Extra information:-

If the food is broken down with the use of oxygen, it is called aerobic respiration. If the breakdown occurs without the use of oxygen, the respiration is called anaerobic respiration. During heavy exercise when the supply of oxygen to our muscle cells is insufficient, food breakdown is by anaerobic respiration.

Answer 2

anaerobic respiration

this dont need oxygen

the by products are lactic acid and energy

to be more clear

6 carbon molecule called glucose os changed into a 3 carbon molecule called pyruvate in the cytoplasm that'll get changed into lactic acid and energy in our muscle cells without oxygen