Humans do not get sick accidently, however, there are two main reasons why we, humans get sick with different diseases. To illustrate more, the disease or getting sick is caused by a change occurs within the body which affects its normal cycle and the body organs cannot defend this change. Basically, even Viruses or Bacteria cause this change.
Viruses:
•Viruses are composed of two components: Protein Coat, and Nuclei Acid (DNA or RNA).
•The protein coat shapes the virus, so, viruses have different shapes because the difference of the composing protein e.g. rods, spherical, hexagonal, or icosahedral.
•Viruses obligately parasites on humans, animals, and plants.
•It replicates inside a living cell and synthesize along inside the cell, which causes the change within the body.
Diseases Caused by Viruses:
•Polio
•AIDS
•Smallpox
•Hepatitis
•Measles
Bacteria:
•Bacteria are unicellular organisms called prokaryotic organisms.
•Bacteria attack rigid cell walls and act like pathogens.
•Bacteria have various forms: Round, Rod, and Spiral.
Bacteria are classified according to their nutrition habits:
- Parasitic: these kinds get their food from humans and living organisms.
- Saprophytic: get food form dead organic remains.
- Autotrophic: synthesize food using several methods.
How do you get
SICK?
Written ByMuhannad Zayed