DNA helicase uncoils the DNA strand and prepares it for replication.
DNA polymerase synthesizes DNA and helps build more strands.
DNA ligase connects two strands of DNA together.
 
        
             
        
        
        
Children's who live at high altitudes develop a larger chest cavity by adulthood than children who live at lower altitudes. It is an example of developmental adaptations which occurs at the level of the individual during the time of critical life stages. 
Mediastinal tumors occur in the chest cavity and it contains the heart, trachea, connective tissue, thymus gland, and large blood vessels which are between the lungs. Chest mass in children and in infants may be secondary tumors.
        
             
        
        
        
Answer:
Dissociation of the myosin head from the actin filament requires the binding of ATP (I).
 
        
             
        
        
        
It is located in a nucleus like organelle called the nucleoid
        
                    
             
        
        
        
Light, is most commonly used. For example the Lightyear, which is any astronomical object moving at the speed of light to a particular location in space.