Answer:
Theodor Schwann, said that all animals are made of cells. 
Explanation:
Hope this helps! :)
 
        
                    
             
        
        
        
The answer is signal transduction. It is also known as cell signaling. It is the transmission of molecular signals beginning from a cell's exterior to its interior. Signals got by cells must be transferred efficiently into the cell to make certain a suitable response. This step is started by the cell-surface receptors.
        
             
        
        
        
1.) D. 
2.) B.
3.) D.
4.) A.
5.) B
Oops I accidentally hit the two stars :( these are right 
 
        
             
        
        
        
The process of meiosis is the cell division that prepares the species for sexual reproduction. Through meiosis cells goes from diploid (2n) cells to haploid (n) gamates. Each daughter cell carries exactly one half of the genetic material from the mother cell. In females the result of meiosis is the production of egg cells, where in the male, the result of meiosis is the production of sperm cells.
        
                    
             
        
        
        
Huh .class of coronavirus?