no
Yes, it can. Don't eat that; mold indicates that the meat has begun to rot and is liable to give you any number of problems if you eat it; from food poisoning to bacterial infection to death.
Cut a slit in the middle of it and if there is still blood in the middle or if the meat is red then cook it more.
If the mold is not to heavy then you can scrape it off with a sharp knife.
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