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BIOLOGY
AIDS is caused by………………….....

AIDS is caused by…………………..

A

virus

B

bacteria

C

protozoa

D

fungi

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CHETANA PUBLICATION-Useful and Harmful Microbes-EXERCICE
  1. How can we observe Rhizobium bacteria in the roots of leguminous plant...

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  2. Antibiotics mainly act against………………… bacteria viruses algae fun...

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  3. AIDS is caused by…………………..

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  4. The……….. destroys harmful microbes present in the milk high pH neut...

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  5. The bacteria which spoil cooked food are……..

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  6. Name the following: Two names of bad bacteria.

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  7. Complete the analogy Swine flu : H1N1 : : Bird Flu :……………

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  8. State whether the following statements are true or false. Correct the ...

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  9. Find the odd man out: Ampicillin, Amoxycillin, Penicillin, Tetracyclin...

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  10. Antibiotics can be taken only when prescribed by doctors.

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  11. Food on which fungi has grown cannot be eaten

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  12. Nowadays, seeds are coated with Rhizobial solution or powder before so...

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  13. Write down the modes of infection and preventive measures against Mala...

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  14. Answer the following question: How is a vaccine produced ?

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  15. What is fermentation?

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  16. Use your brain power What is the structure of lichen, a condiment? W...

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  17. Find out the uses of fungi to plants and animals?

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  18. Answer the following question: What are the uses of Lactobacilli?

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  19. Which changes do you notice in leather articles and gunny (jute) bags ...

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  20. Chapattis made from wheat only swell up but bread becomes spongy, soft...

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