Is very bad. what is the question
        
             
        
        
        
Answer: Peptide bond 
Explanation: A peptide bond is the covalent chemical bond  bond that holds together two amino acids which occurs when the carboxylic group of one molecule reacts with the amino group of the other molecule, linking the two molecules and releasing a water molecule catalyzed by peptidyl transferase, an RNA-based enzyme  integrated into the growing chain.
In the elongation stage ie when Long chain polypeptides are forming , peptide bonds  are formed by linking many amino acids to each other. These peptide bonds of amino acids are  relatively unstable, and  can break spontaneously in a slow process as can be seen especially  in enzymes of living organisms in the making and breaking of bonds.
 
        
             
        
        
        
Answer:
species
Explanation:
According to the most widely used species definition, the biological species concept, a species is a group of organisms that can potentially interbreed, or mate, with one another to produce viable, fertile offspring.
 
        
             
        
        
        
Answer:
Bacteria is the only prokaryotes.
Some cynobacteria are also included in prokaryotes.
 
        
                    
             
        
        
        
The correct answers are:
Viruses are bundles of genetic material enclosed in a capsid.<span>
</span>Viruses are not living, so D is incorrect. 
Viruses are much smaller than bacteria, so A is incorrect.