Answer:
The 5' cap is added to the mRNA as a means of protection from being degraded by enzymes in the cellular environment. Additionally. it helps with binding to the ribosome and subsequently translating it into a protein.
Explanation:
Moreover, it's only Polymerase II that has the ability to add the 5' cap and rRNA & tRNA are not transcribed by Polymerase II, only the mRNA is. 
rRNA and tRNA have stable 3-Dimensional structures that protects it from being degraded by enzymes.
Hope that answers the question, have a great day!
 
        
             
        
        
        
Cytokinesis is when the cytoplasm divides to form two daughter cells
        
             
        
        
        
Answer - B. Kidney function is controlled by the blood's composition and hormones.
Reasoning - Well to start off the kidneys (main) purpose function is to clean your blood which is very Important with blood composition. Second It can also and will excrete it through urine which is pretty much what it does. Oh and also a little bit of hormones. 
 
        
        
        
It’s c ......,...,.....,,,..,..........