The correct answer is True.
Further Explanation:
The Big Five personality traits are based around the question "who are you?" it is one of the most difficult answers each person answers about themselves. 
The factors that are examined in the the Big Five are listed below;
*Openness to experience
*Neuroticism
*Conscientiousness
*Extroversion
*Agreeableness
Robert McCrae and Paul Costa are the two men who did extensive research on the subject and were the first to validate the model. The research duo have been working together since 1975. 
 
        
                    
             
        
        
        
Cytochromes:- They are iron containing hemoproteins that serve many cellular functions including energy production, steroid biosynthesis, and degradation of toxins.
Cytochromes occur in all organisms except a few obligate anaerobes. They are structurally similar among organisms. These are proteins to which one to two tetrapyrrole rings are bound. These tetrapyrroles are very similar to the chromophores of chlorophylls in plants. However, chlorophylls(in plants) contain Mg++ as the central atom in the tetrapyrrole, whereas the cytochromes(in aerobic animals) have an iron atom (Figure).