I’d say A is probably the correct answer , but if not A , then definitely B.
        
             
        
        
        
Answer:
As a result of a change in the sequence of nucleotides in a strand of DNA (Deoxyribonucleic acid), the amino acids also change in the final protein which leads to protein malfunction.
Explanation:
As a result of a change in the sequence of nucleotides in a strand of DNA (Deoxyribonucleic acid), the amino acids also change in the final protein which leads to protein malfunction. If insulin does not work correctly, it may not be able to bind to the insulin receptor. 
DNA contains genetic information. It has a double helix structure.
 
        
             
        
        
        
I think it might be C I am not 100% sure though
        
             
        
        
        
Answer:
D.
Explanation:
This amount of space in air that can hold water changes depending on the temperature and pressure.
 
        
                    
             
        
        
        
Answer: Ionic bond
Explanation: Ionic bond is a type of chemical bond which occurs by removing one or more electron from one atom and it is attached to another atom which gives a negative and positive ions that attract each other. For example Sodium chloride Nacl2.