Bacteria vs Virus

Prokaryotic/unicellular

Contain DNA/ribosomes BUT NO nucleus

Fermentation of food: buttermilk/yogurt/cheese

Decompose organic matter

Nitrogen fixation

Help humans digest food

Biotechnology: make human insulin

Using cells for food: The bacteria break down healthy cells for food, destroying tissues

Releasing toxins: The bacteria produce a toxin (poisonous protein) that is released into the bloodstream where it can travel throughout the body, disrupting normal activity and damaging tissues

Bacteria can cause a variety of diseases:

–Food Poisoning – Scarlet Fever

–Tuberculosis – Whooping Cough

–Cholera – Bacterial Meningitis

–Syphilis – Pneumonia

–Ulcers – Leprosy

-Strep Throat – Tetanus

Used to treat a variety of bacterial infections

DO NOT work on viruses

Viruses have DNA or RNA

Virus must have a host to survive

Viruses are considered NON-LIVING

Virus injects its DNA into host cell

Host cell replicates viral DNA instead of cellular DNA

Virus ruptures host cell releases millions of virus particles

Viral replication cycle in which a virus takes over a host cell's genetic material and uses the host cell's structures and energy to replicate until the host cell bursts, killing it. This cycle kills the host cell almost right away. 

Viral replication cycle in which the virus's nucleic acid is integrated into the host cell's chromosome, a provirus is formed and replicated each time the host cell reproduces, the host cell is not killed until the cycle is activated. At this time the virus remains quiet for a very long time and it is said to be hidden.