Answer: Alzheimer's disease causes proteins in the brain to become improperly folded.
Explanation:
The alzheimer disease is a brain disorder that destroys the memory and thinking skills in the affected patients.
The alzheimer disease is identified as the protein folding disease. It is due to the accumulation of abnormally folded protein called as amyloid beta protein present inside the brain of the alzheimer's patients. The function of this protein is unclear and it is assumed to be involved in the neuronal development.
 
        
             
        
        
        
Abnormal tissue growth on a mucous membrane.
 
        
                    
             
        
        
        
Viruses are not made out of cells, they can't keep themselves in a stable state, they don't grow, and they can't make their own energy. Even though they definitely replicate and adapt to their environment, viruses are more like androids than real living organisms.
        
             
        
        
        
Average mass of the atoms of an element measured in atomic mass unit
        
                    
             
        
        
        
A. One recessive and one dominant