It depends on the microphone. Wireless (radio) microphones do. Most wired microphones do not but there are some, with pre-amps, that do.
No, it uses Wii remotes (that need batteries) but I think the microphone plugs into the back of the Wii.
Yes it does! At least my microphone does. It's a wireless microphone that holds a 9V battery.
You put batteries in it and you press ON or you flip it up to ON
yes you can.
The Audio Technica wireless headset microphone is powered by two AAA batteries which will last for about twenty hours of recording.
Yes, you will need a microphone to talk. It is the instrument through which your voice will pass. The microphone is an essential part of talking.
No. You need either a built in microphone or you need to purchase a microphone that you can plug in.
No, they just have a USB plugin at the end of the cable with the microphone and headset cables.
No
Any microphone with XLR input
a webcam and a microphone
No, net necessarily. You do need a Wii microphone