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Human Health & Diseases PPT Biology Class 12

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FAQs on Human Health & Diseases PPT Biology Class 12

1. What are the common symptoms of COVID-19?
Ans. Common symptoms of COVID-19 include fever, cough, sore throat, shortness of breath, fatigue, body aches, loss of taste or smell, and headache. It is important to seek medical advice if you experience any of these symptoms.
2. How does the immune system protect against diseases?
Ans. The immune system protects against diseases by recognizing and fighting against harmful pathogens such as bacteria, viruses, and parasites. It does so by producing specialized cells and proteins that target and destroy these pathogens, preventing them from causing infections or diseases.
3. What are the risk factors for developing cardiovascular diseases?
Ans. Risk factors for developing cardiovascular diseases include high blood pressure, high cholesterol levels, smoking, obesity, diabetes, a sedentary lifestyle, family history of cardiovascular diseases, and age. It is essential to manage these risk factors to reduce the chances of developing such diseases.
4. How does vaccination help in preventing the spread of infectious diseases?
Ans. Vaccination helps in preventing the spread of infectious diseases by stimulating the immune system to produce an immune response against specific pathogens. This immune response helps the body recognize and fight against the pathogens, preventing them from causing infections and reducing the spread of the disease in the population.
5. What are the causes of antibiotic resistance?
Ans. Antibiotic resistance occurs when bacteria develop the ability to survive and grow despite the presence of antibiotics. This can happen due to the overuse or misuse of antibiotics, incomplete courses of antibiotic treatment, use of antibiotics in animal agriculture, and poor infection control practices. These factors contribute to the selection and survival of antibiotic-resistant bacteria, making it difficult to treat infections effectively.
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