The nucleolus is where the assembly of the ribosomes begin. Proteins are assembled on ribosomes. Ribosomes produce proteins by following coded instruction of the DNA. Eukaryotic cells contain an internal membrane system known as the endoplasmic reticulum.
 
        
             
        
        
        
The Scientific method can help resolve problems logically.
<u>Explanation:</u>
A logical and systematic approach that is used for the discovery of working of things in the world is known as Science. The scientific methods are used by the scientists for the purpose of evidences that can be measured and associated with the assumed hypothesis. The result of this method will be  either supporting or contradicting to the theory.  
The term "science" refers to the knowledge whose base is from some reproducible data. The result is obtained through the process of analysis and testing. It aims in finding solutions to any problem through logic and research. 
 
        
             
        
        
        
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
        
             
        
        
        
Cytoplasm 
Ribosomes
Plasmid nucleoid 
        
                    
             
        
        
        
I really don't know how to help you here, bud.