Question

Can a single microwave photon cause cell damage? Explain.

Short answer

No, it can't cause any damage because it has very low energy.

Step-by-step solution

Damage by a single microwave photon

Due to the low frequency of microwaves, it always has small amount of energy that is insufficient to cause any danger for human body.

Ionization with single photon

As it cannot produce ionization with single photons and does not ordinarily have the hazards of higher frequencies, so it can't cause any cell damage or any harm like UV rays, X-rays or Gamma rays.

Human absorption

So humans can absorb an amount of microwave without getting any tissues damage.

Therefore, it can't cause any damage because it has very low energy.