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Bacteria vs Virus

  BACTERIA  VIRUS
Dependence on host Do not need a host
to reproduce		 Need a living organism to reproduce
     
Size Small, microscopic Microscopic,
10 to 100x smaller
than a bacteria
     
Structure  Has a cell wall
Is unicellular
Has a single chromosome present		 Does not have a cell wall
but has a protein coat.
Does not have cells.
Contain a strand of DNA/RNA
     
Benefits 

Can be beneficial
(like aids in digestion)
or harmful

 Mostly harmful
     
Reproduction  Through binary fission
and conjugation		 By invading host cell
     
Treatment  Can be prevented
through antibiotics		 Can be prevented
by vaccines
     
Transmission  Can be similar in some ways like being exposed to droplets and then touching eyes, nose and mouth

 

How do they reproduce?
Bacteria reproduce by Binary Fission. A binary fission happens when a cell grows twice as big as its normal size, makes a complete copy of everything including its genetic material and then splits into two.
A virus needs a host to reproduce. It attaches itself to the host cell, injects its DNA to form proteins. They spread out when the newly formed virus breaks out from the infected cell and attaches to other cells to repeat the process. They also spread by waiting for the cell to reproduce.


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