The question was incomplete but I managed to found it some other source. Please find that in the attached picture.
Answer:
<u>The earliest step: </u>
Formation of amino-acid building blocks
<u>The second step: </u>
Joining amino-acids into a polymer like beads on a string (this order is the 'primary structure')
<u>The third step:</u>
The first part of the protein folds due to side-chain and backbone interactions
<u>The fourth step</u>:
The final protein tertiary structure is completed with the addition and folding of the last parts of the protein.
<u>The last of these steps:</u>
The enzymatic function is possible due to the completed tertiary structure creating an 'active site' region of the protein.
Yes because they are still the same species so they can reproduce
I think structure however I am not sure so keep that in mind.