In fermentation, what do cells use instead of oxygen to break down glucose?

Thus the above response is right.

Learn more about fermentation here:

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sugar

Explanation:

In the absence of oxygen, the cell uses a process called anaerobic fermentation. or simply fermentation. Fermentation doesn't break the sugar down any further, it simply helps reset the system so that more sugar can be broken down.

d.) circle motion requires a force to give it a centripetal acceleration.