They aren’t common denominators
        
             
        
        
        
Answer:
Carbohydrates covalently linked to proteins (glycoproteins) or lipids (glycolipids) are also a part of cell membranes, and function as adhesion and address loci for cells. The Fluid Mosaic Model describes membranes as a fluid lipid bilayer with floating proteins and carbohydrates.
Explanation:
 
        
             
        
        
        
Answer:
a) 12 neutrons
Explanation:
The atomic mass is 22.990, which can be rounded to 23 and is the combination of protons and neutrons. The atomic number is 11 (protons), and 23-11=12, whoch would be the neutron number
Hope this helps :)
 
        
             
        
        
        
I would have to say Proteins, lipids, and carbohydrates. Carbohydrates being the first energy source, lipids second and lasting the longest, and proteins the third and final source.  although you did not give the full question, so i do not know if i can be completely sure. 
        
             
        
        
        
The cerebrum is a large part of the brain containing the cerebral cortex it lies either in front or on top of the brainstem