Answer: 
A. by breaking off a phosphate molecule from itself structure
 
        
                    
             
        
        
        
Answer : The The correct option is, If there is energy lost in the collision to sound, heat, etc., the collision is inelastic.
Explanation :
- Elastic collision : It is defined as in which there is no loss of kinetic energy in the collision.
- Inelastic collision : It is defined as in which there is a loss of kinetic energy in the collision and this energy changed to another form of energy.
If the collision involves bouncing, it is inelastic because kinetic energy is not conserved.
If the collision involves sticking together, it is inelastic because kinetic energy is not conserved, it is changes to potential energy.
 
        
                    
             
        
        
        
Answer:
The Sámi people are an indigenous people of Northern Europe inhabiting Sápmi, which today encompasses northern parts of Sweden, Norway, Finland and the Kola Peninsula of Russia.If this helps mark me brainliest.Thanks.
 
        
             
        
        
        
Proteins play the role of unwinding and separating a double-stranded DNA molecule.