Answer:
A hydrogen atom is made up of a nucleus with charge +1, and a single electron. Therefore, the only positively charged ion possible has charge +1.
Explanation:
Hope this helps
 
        
             
        
        
        
I think its D but I'm not sure
 
        
                    
             
        
        
        
Basically you can answer the question if you know the meaning of 32P and of 35S. 
32P means Phosporus-32 (32 is the mass) and 35S means the Sulfur isotope with mass of 35 (it's the most radioactive of all the sulfur isotopes btw). 
So we can see that the names have to do with Sulfur and Phosphorus - therefore, the best answer is the following one:
<span>C. Because DNA contains phosphorus and proteins contain sulfur</span>
        
                    
             
        
        
        
Answer:
Like starch, cellulose is a complex carbohydrate made up of many molecules of glucose linked together. But unlike starch, plants do not use cellulose to store energy. Instead, plants use cellulose as a structural molecule. It forms the cell wall that gives plant cells shape and support.
Explanation: