Help on biology homework?

Anyone care to help me with some homework? I have to answer some questions about stem cells.

1. If every cell in the human body have the same DNA, how do cells know how to grow into specialized cells? (muscle, skin, etc.)

2. What is a stem cell?

3. How do embryonic stem cells form during early development?

If you can help me, I'd appreciate it. Thanks. :]

Phew! You're still online!
1. If every cell in the human body have the same DNA, how do cells know how to grow into specialized cells? (muscle, skin, etc.)
Well, every cell has a nucleus, and the nucleus tells it what to do, right? That's all I can think of right now. Sorry.

Well, it has the same DNA, and the DNA tells it what to do.

Alright, it's all fine. I got everything figured out.

Topic Locked. <3