Food tends to be dead before preparation.
It depends.
no not at all!
Microwaving the food conserves much of the thiamin.
Bringing the food to a high enough temperature will kill the bacteria. You can do this by cooking it for a while, frying, roasting or baking. Microwaving food should also kill bacteria but I am not sure whether it is just the microwave radiation that accomplishes this or the food has to become hot enough.
No more or less so than food cooked by any other method.
Dampening a paper towel and covering your left overs before microwaving it is better than covering it with plastic wrap. Plastic wrap, when heated releases toxic chemicals and it goes onto the food.
Microwaving a wet sponge for 2 minutes can help kill some bacteria and germs, but it may not eliminate all of them. It is more effective to regularly replace sponges or clean them by soaking in a bleach solution and allowing them to air dry.
Microwaving food certainly doesn't make it any healthier. The loss of moisture through microwaving the water cells in the food until rupturing results in free radicals, which can be deemed as carcinogenic.
Microwave. Boiling food enables the nutrients to 'leech out' into the boiling water. Microwaving simply agitates the water molecules within the food.
You can, but don't do it regularly. The Styrofoam releases chemicals into the food... microwaving it once in a while is okay, though.
You can not kill food because food is not alive.
Yes, microwaving it for 2-4 minutes has been showed in studies to kill 99-100% of the bacteria.... however, some bacteria produce a natural toxin, that is poisonous to us, and microwaving the meat is ineffective at "deactivating it, so I'd say after more than a few hours, just throw it out :(