Answer:
Although the specific prediction processes involved in different structural prediction methods vary greatly, the basic steps are generally the same, often including conformation initialization (including template recognition and ab initio modeling), conformation search, structure screening, all atom structure reconstruction, structure optimization, etc.
Explanation:
http://www.creative-biostructure.com/protein-crystallization-and-structure-determination_13.htm
The third one is the product of cellular respiration
anaerobic and does not require oxygen