Does eggyolk consist of the entire egg?

No, the egg yolk is just one part of the egg.

Here's a breakdown of an egg:

* Yolk: The yellow, round center of the egg. It's rich in fat, protein, vitamins, and minerals.

* White (Albumen): The clear, viscous liquid surrounding the yolk. It's primarily made of protein and water.

* Shell: The hard outer covering of the egg. It protects the contents inside.

* Shell Membranes: Two thin membranes that line the inside of the shell and hold the egg together.

So, the yolk is just a part of the egg, not the whole thing.