I have to say airborne infections.  If the infection is airborne it can travel and infect many people more quickly and wide spread.
        
             
        
        
        
Answer:
A ‘receipt’ is a statement saying that what is presented is true
Explanation:
Hope this helps!(づ ̄3 ̄)づ╭❤~
 
        
                    
             
        
        
        
75%    (3/4)
there would be BB, Bb, Bb and bb
BB and Bb are the only ones that is dominant since bb is recessive.
        
                    
             
        
        
        
Penicillins disrupts bacterial cell wall synthesis.
<h3>
How does penicillin affect bacterial cell walls?</h3>
- Penicillin kills bacteria by inhibiting the proteins which cross-link peptidoglycans in the cell wall . 
- When a bacterium divides in the presence of penicillin, it cannot fill in the “holes” left in its cell wall.
- β-Lactam antibiotics, including penicillins, cephalosporins, monobactams, and carbapenems, are distinguished by a lactam ring in their molecular structure and act by inhibiting the synthesis of the peptidoglycan layer of bacterial cell walls.
- Penicillins work by bursting the cell wall of bacteria. Drugs in the penicillin class work by indirectly bursting bacterial cell walls. 
- They do this by acting directly on peptidoglycans, which play an essential structural role in bacterial cells.
To learn more about Penicillin from the given link
brainly.com/question/11849121
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