Hello, welcome to the forums! I'm not sure if I understand what you mean. Can't you answer a phone call when the phone is locked? What kind of unlock method are you using, pattern, pin, just swipe? Which android version do you have, kitkat or Lollipop?
Don't worry about asking basic questions. All of us were newbies at some point
Just try to be a bit more specific and I'll try to help you.
You can take an screenshot and post it here. In the Moto G you can do that pressing volume down and power at the same time.