The proteins in the cell membrane allow the nutrients to go and waste to go out <span>of a cell. Water passes through the cell membrane without the help of proteins.</span>
        
             
        
        
        
The leading is replicated continuously for the entire length of the chromosome, while the lagging strand is replicated in pieces.
        
             
        
        
        
It is bright-field...............
        
             
        
        
        
Answer:
carbon and titanium,  hope that helps
Explanation: