Answer:
im not sure BUT...
Explanation:
Maybe try go ogle? Dont doubt yourself oyull do fine! Just trust yourself!
 
        
             
        
        
        
This short description given clearly describes the Milky Way Galaxy. It is a collection of millions of stars, dusts, and gases that form a halo of hot gas. Some scientists theorized that within this galaxy are thousands of other galaxies that could possibly hold other life forms.
        
             
        
        
        
Answer: Closed
Explanation:
At  resting membrane potential( RMP) sodium channels remained shut, this is because , previously  in depolarisation,the  voltage  gated sodium  channels  were opened for sodium to diffuse  into the Axon. However   these channels closed  after reaching their refractory period,s.
Therefore a  change  in the extracellular concentration of sodium will not  open them 
 
        
             
        
        
        
B. Ribosomes, their function is to assemble Amino Acids into protein chains