CBSE › Class 8 › Science › Health The Ultimate Treasure (Class 8 NCERT New)
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1. Fill in the blank: Vaccines are ________, not curative. They help minimize serious diseases before they happen, but do not treat them once someone is already sick.

2. India manufactures vaccines on a massive scale and supplies them to many countries.

3. Who played a key role in developing the Rotavirus vaccine, which protects children from diarrhoea?

4. Fill in the blank: Antibiotics work only against _______ infections because they target parts of bacterial cells that are different from human or other animal cells.

5. Antibiotics do not work against viruses or diseases caused by protozoa.

6. According to the passage, what do scientists and doctors do to ensure the safety of vaccines?

7. Refer to the diagram showing human population and antibiotics usage. Fill in the blank: Antibiotics are used to treat _______ infections, not viral infections.

8. What is the name of the first antibiotic discovered by Alexander Fleming in 1928?

9. Who discovered penicillin?

10. Fill in the blank: Penicillin was discovered when Alexander Fleming noticed that a mould on a discarded petri dish stopped the bacteria from ________.

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