Answer:
A?
Explanation:
The first step of protein synthesis is transcription, and transcription occurs in the nucleus of the cell... so...
 
        
             
        
        
        
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A night person is more active and awake at night whilst a morning person is the opposite. 
 
        
                    
             
        
        
        
Take for example - you touching something sharp and instantly moving your hand away. 
Sensory neurons in your fingers detect the external stimuli of the sharp object and send a nerve impulse to the spinal cord (does not reach brain) and is sent back to a motor neurone - attached to an effector that moves the muscle and moves the hand away. This is a rapid reflex action and involuntary.