Answer:
Cholesterol is a structural component of the cell membranes of animals. Because of cholesterol that provides cell membrane structural integrity and fluidity, animal cells need not to have cell walls such as that in bacterial and plant cells.Cholesterol reduces permeability of lipid membranes. ... Cholesterol plays has a role in membrane fluidity but it's most important function is in reducing the permeability of the cell membrane. Cholesterol helps to restrict the passage of molecules by increasing the packing of phospholipids.
Explanation:
 
        
             
        
        
        
Answer:
Corresponding mRNA Sequence: ALGUG GAACC_GCUG CLGA 
Amino Acid Sequence: METHIONINE-LEUCINE-GLUTAMIC ACID-PROLINE
 
        
             
        
        
        
Birds have great vision and can see throughout night and day
        
                    
             
        
        
        
Answer:
Protons and neutrons have similar mass.
Electrons are smaller than a proton or a neutron.
Explanation:
Protons and neutrons have approximately the same mass, but they are both much more massive than electrons