Answer:
A
Explanation:It boils down to a and b. A single molecule of DNA is wrong. So it's a,
 
 
        
             
        
        
        
The answer is B solubility in water
        
             
        
        
        
Explanation:
Cellular Metabolism
The living cells of every organism constantly use energy to survive and grow. Cells break down complex carbohydrates into simple sugars that the cell can use for energy. Muscle cells may consumer energy to build long muscle proteins from small amino acid molecules.
 
        
             
        
        
        
Answer:
a deoxyribose (5-carbon sugar), a phosphate group, and a nitrogenous base (Figure 9.3). So the third option.
 
        
                    
             
        
        
        
Answer:
Vegetation structure that is dominanted by grasses