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The bacteria which spoil cooked food are...

The bacteria which spoil cooked food are……..

A

Saccharomyces

B

Lactobacilli

C

Clostridium

D

Rhizobium

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Answer the following Read the paragraph and answer the questions given below it. Food poisoning can occur due to contamination of food by various bacteria and fungi.Clostridia are bacteria responsible for spoilage of cooked food. There are around 100 species of this bacteria viz. Clostridium tetani, Clostridium botulinum, etc. that are present either free living in soil or the alimentary canal of humans and other animals. The bacteria are rod- shaped and produce pottle-shaped endospores in adverse environmental conditions. These microbes cannot withstand normal oxygen levels in air and grow under anaerobic conditions. Which narrow-spectrum antibiotic can be used to treat bacterial infections caused by Clostridia?

Answer the following Read the paragraph and answer the questions given below it. Food poisoning can occur due to contamination of food by various bacteria and fungi.Clostridia are bacteria responsible for spoilage of cooked food. There are around 100 species of this bacteria viz. Clostridium tetani, Clostridium botulinum, etc. that are present either free living in soil or the alimentary canal of humans and other animals. The bacteria are rod- shaped and produce pottle-shaped endospores in adverse environmental conditions. These microbes cannot withstand normal oxygen levels in air and grow under anaerobic conditions. How does Clostridium survive even under adverse conditions?

Answer the following Read the paragraph and answer the questions given below it. Food poisoning can occur due to contamination of food by various bacteria and fungi.Clostridia are bacteria responsible for spoilage of cooked food. There are around 100 species of this bacteria viz. Clostridium tetani, Clostridium botulinum, etc. that are present either free living in soil or the alimentary canal of humans and other animals. The bacteria are rod- shaped and produce pottle-shaped endospores in adverse environmental conditions. These microbes cannot withstand normal oxygen levels in air and grow under anaerobic conditions. Why is Clostridium mostly found to contaminate tinned or canned foodstuff?

Answer the following Read the paragraph and answer the questions given below it. Food poisoning can occur due to contamination of food by various bacteria and fungi.Clostridia are bacteria responsible for spoilage of cooked food. There are around 100 species of this bacteria viz. Clostridium tetani, Clostridium botulinum, etc. that are present either free living in soil or the alimentary canal of humans and other animals. The bacteria are rod- shaped and produce pottle-shaped endospores in adverse environmental conditions. These microbes cannot withstand normal oxygen levels in air and grow under anaerobic conditions. Do you know about any rod-shaped, anaerobic micro-organism that is useful to humans?

State whether the following statements are true or false. Correct the false statements: The bacteria Lactobacilli cause food-poisoning.

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CHETANA PUBLICATION-Useful and Harmful Microbes-EXERCICE
  1. AIDS is caused by…………………..

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

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

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

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

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

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

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

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  9. Food on which fungi has grown cannot be eaten

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

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

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

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  13. What is fermentation?

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

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

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

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

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

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  19. How is alcohol produced?

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  20. How was the antibiotic penicillin discovered?

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