III - ASSIGNMENT
Q1. Which bacterium causes pepti
erium causes peptic ulcers? Who discovered the above pathogen?
Q2. What are the different types of diseases? Explain them.
Q3.Explain giving reasons -
(a) Balanced diet is necessary for maintaining health body.
1) Health of an organism depends upon the surrounding environmental conditions.
Q4. Give difference between vaccines and antibiotics.
Q5.What is inflammation? What are the changes occur during inflammation?
Q6. Why is antibiotics not effective for viral disease?
Q7. Why do we see water droplets collected on the outer surface of a glass container,
Q8. Explain why solids have fixed shape but liquids and gases do not have fixed shape.
09. Why is it advisable to use pressure cooker at higher altitudes?
Q10. What are fluids?
Answers
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Q1. Which bacterium causes pepti
Q1. Which bacterium causes peptierium causes peptic ulcers? Who discovered the above pathogen?
The bacterium that causes peptic ulcers is: Heliobacter pylori. The scientists Marshall and Warren discovered this bacterium
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Q2. What are the different types of diseases? Explain them.
There are four main types of disease:
●infectious diseases
●deficiency diseases
●hereditary diseases (including both genetic diseases and non-genetic hereditary diseases), ●physiological diseases.
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Q3.Explain giving reasons -
Q3.Explain giving reasons -(a) Balanced diet is necessary for maintaining health body.
Q3.Explain giving reasons -(a) Balanced diet is necessary for maintaining health body.1) Health of an organism depends upon the surrounding environmental conditions.
a) Balanced diet provide us minerals, vitamins and nutrients which are required for the growth and development of body.
1)Yes! because the outside conditions like temperature, rainfall or any other features affect the food of an organisim so, indirectly it affect the health of organism.
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Q4) Give difference between vaccines and antibiotics.
Antibiotics kill indiscriminately, whereas vaccines are highly targeted. Antibiotics are used to treat severe infection , whereas vaccines prevent infections from ever becoming established.
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Q5) What is inflammation? What are the changes occur during inflammation?
When inflammation occurs, chemicals from the body's WBC's are released into the blood or affected tissues to protect your body from foreign substances. This release of chemicals increases the blood flow to the area of injury or infection, and may result in redness and warmth.
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Q6) Why is antibiotics not effective for viral disease?
Antibiotics are useless against viral infections. This is because viruses are so simple that they use their host cells to perform their activities for them. So antiviral drugs work differently to antibiotics, by interfering with the viral enzymes instead.
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Q7) Why do we see water droplets collected on the outer surface of a glass container?
Sometimes we see water droplets on the outer surface of the glass containing ice-cold water this is because the water vapour presents in air, on coming in contact with the cold glass of water, loses energy and gets converted to liquid state, which we see as water droplets.
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Q9) Why is it advisable to use pressure cooker at higher altitudes?
It is advisable to use pressure cooker at higher altitudes for cooking food because At high altitudes, the atmospheric pressure is very low. This causes the water to boil at a lower temperature which will take a lot of time for food to be cooked. A pressure cooker stops the boiling of water at lower temperature.
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Q10) What is fluid?
A substance that has no fixed shape and yields easily to external pressure; a gas or (especially) a liquid.
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