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Questions and Answers
What is a pathogen?
How do viruses cause diseases?
What is the difference between bacteria and viruses?
What is a transmissible disease?
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What defines a bacterial disease?
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Study Notes
Understanding Pathogens
- Pathogens are microorganisms that cause diseases in hosts, including humans, animals, and plants.
- Common types of pathogens include bacteria, viruses, fungi, and parasites.
Viruses and Disease
- Viruses invade host cells and hijack their machinery to replicate, often leading to cell damage or death.
- They can trigger immune responses, resulting in symptoms such as fever, inflammation, and fatigue.
Bacteria vs. Viruses
- Bacteria are single-celled organisms that can live independently and reproduce on their own; they can be beneficial or harmful.
- Viruses are not cells and cannot reproduce without a host; they consist of genetic material surrounded by a protein coat.
- Bacterial infections can often be treated with antibiotics, while viral infections typically require antiviral medications or vaccines.
Transmissible Diseases
- Transmissible diseases are illnesses that can spread from one person or organism to another, either directly or indirectly.
- Common transmission modes include respiratory droplets, bodily fluids, contact with contaminated surfaces, and vectors like insects.
Bacterial Diseases
- Bacterial diseases are infections caused by harmful bacteria that disrupt normal bodily functions.
- Key characteristics include the presence of symptoms such as fever, pain, and inflammation, which are immune responses to the infection.
- They can be diagnosed through lab tests and treated with antibiotics.
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Description
Test your knowledge of environmental hazards and their impact on human health with this quiz by Dr. M. Prabhu Inbaraj. Explore biological, chemical, and natural hazards and their potential effects on humans. Learn about pathogens, harmful chemicals, and natural disasters, and their implications for human well-being.
