Kindly see answers below:
1.	operon is not transcribe•	b.) lac operon: lactose absent•	e.) trp operon: tryptophan present2.	operon is transcribed, but not sped up by the positive control•	a.) trp operon: tryphophan absent•	d.) lac operon: lactose present, glucose present3.	operon is transcribed quicklu through positive control•	c.) lac operon: lactose present, glocuse absent
        
             
        
        
        
It is crucial that the process of mitosis is error free. This is because other wise healthy cells can become cancer cells since mitosis deals with the whole human reproduction thing, its best to keep it clean so nothing happens to the healthy cells or else it can be infected and possibly harm a person/baby.
        
                    
             
        
        
        
Answer:
The body heats up because during orgasm the blood flow level increases which also makes the face appear more coloured and attractive. 
This also because during sex, bacteria may build up from the sexual parts of male and females which causes heat. 
<h3>Hope it helps!! </h3>