They use it to react carbon dioxide<span> with water to make a </span>sugar<span> called </span>glucose. Theglucose<span> is used in respiration, or </span>converted<span> into </span>starch<span> and stored. </span>Oxygen<span> is produced as a by-product. This process is called photosynthesis.</span>
        
                    
             
        
        
        
The answer is; E
This shows that these organelles were once free-living organisms  with their own mechanisms for reproduction which they have retained even after years of symbiotic relationship with the higher organisms. During their duplication, they also replicate their own DNA. Their DNA does not have histones (as opposed to the DNA in the nucleus of their host eukaryotic cell) similar to that of simple organisms such as bacteria. 
 
        
             
        
        
        
Phagocytosis is the ingestion and destruction of particle matter by the amoeba
        
                    
             
        
        
        
Answer:
In unicellular organisms, cell division is the means of reproduction; in multicellular organisms, it is the means of tissue growth and maintenance. Survival of the eukaryotes depends upon interactions between many cell types, and it is essential that a balanced distribution of types be maintained. This is achieved by the highly regulated process of cell proliferation. The growth and division of different cell populations are regulated in different ways, but the basic mechanisms are similar throughout multicellular organisms.
Explanation:
 
        
             
        
        
        
density, it's a mass per unit volume