Using iPhone earbuds as both earphones and mic?

I want to use Skype on my laptop but my laptop only had webcam but no inbuilt mic. Can I use my iPhone earbuds as both a mic and as earphones? Do I insert it into the headphone or mic input thing?
Thanks

Added (1). @Grayson M

I meant for using my earbuds for Skype on my laptop. There are 2 inputs, one headphones, the other for the mic. Which one do I plug my earbuds in so that I can use them as earphones and mic?

Yes
Plug the earbuds into the jack in the iPhone. I use skype doing that almost every day.

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