<u>Stem cell </u>research has the potential to significantly impact the development of disease-modifying treatments for Parkinson’s disease with considerable progress made in creating dopamine-progressing cells.
Explanation:
Parkinson’s disease, a neurodegenerative disease, leads to reduction of dopamine (a neurochemical messenger which carries messages involving thinking and body movements to brain) in the body because the disease will target and kill dopamine-producing nerve cells (neurons). This leads to loss of movement and thinking abilities which are activated by dopamine.
Stem cells research is done to study about the prospects of stem cells in stem cell therapy for Parkinson’s patients as a viable source of new dopamine nerve cells. Research has been involved in growing stem cells to replace or regenerate dopamine-producing nerve cells by using embryonic stem cells or induced pluripotent stem cells as a treatment modality in Parkinson’s disease.
 
        
                    
             
        
        
        
A - 3 bases at a time in the same direction
        
                    
             
        
        
        
<h2>
Animals</h2>
Explanation:
A. Animals have muscle tissue, whereas other living things do not.
The character that contrasts animals with other living organism is the presence of muscle tissue. Muscle tissue is exclusively found in animals and are not found in any other kingdom of the living world.
Animals and many other living things posses multiple cells. Most of the cells in organisms are with nucleus.Most of the multicellular organisms have tissue level organization of the body.
 
        
        
        
Answer;
C.	A decrease in the formation of ATP
Explanation; 
-During the first stage of photosynthesis NADPH is created. It involves two set of molecules, that is photosystem I and photosystem II, which absorb sunlight, then convert it to chemical energy, and transfer it to electrons. 
-Outside factors may cause the plant's pH level to drop during photosynthesis. When this happens, the shape of the proteins may be altered within the two photosystems and cause a decrease in the formation of NADPH, thus adversely affecting efficient photosynthesis, and cause a decrease in the formation of ATP.