Q. How can we control harmful microorganisms?
Basic terms used in discussing the control of microorganisms include:
- Sterilization. Sterilization is the process of destroying all living organisms and viruses.
- Disinfection.
- Decontamination.
- Disinfectant.
- Antiseptic.
- Sanitizer.
- Antibiotic.
- Chemotherapeutic synthetic drugs.
Q. How can we stay safe from the harmful microbes present around us?
Warding off germs and infection You can prevent infections through simple tactics, such as washing your hands regularly, avoiding close contact with people who are sick, cleaning surfaces that are touched often, avoiding contaminated food and water, getting vaccinations, and taking appropriate medications.
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Q. How do we observe microorganisms?
Microorganisms are too minute in size to be seen by unaided eyes, hence are observed and studied using microscopes. Compound microscopes are commonly used in research labs and institutes to study microorganisms. They use glass lenses to bend and focus light rays and produce enlarged images of small objects.
Q. What are three ways microorganisms are harmful?
A few harmful microbes, for example less than 1% of bacteria, can invade our body (the host) and make us ill. Microbes cause infectious diseases such as flu and measles….avoid and survive attack by the host’s immune system.
- Immune system.
- Routes of transmission.
- Vaccination.
- Antibiotics.
Q. What are the 4 major microorganisms?
The major groups of microorganisms—namely bacteria, archaea, fungi (yeasts and molds), algae, protozoa, and viruses—are summarized below. Links to the more detailed articles on each of the major groups are provided.
Q. Which microorganism is smaller than bacteria?
Viruses are even smaller than bacteria. They aren’t even a full cell. They are simply genetic material (DNA or RNA) packaged inside of a protein coating.





