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Find out the name of the microbes from w...

Find out the name of the microbes from which cyclosporin A (an immunosuppresive drug) and statins (blood cholesterol lowering agents) are obtained

A

Fungi

B

Bacteria

C

Virus

D

Plants

Text Solution

Verified by Experts

The correct Answer is:
A

Fungi
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An electromagnetic wave can be represented by E = A sin (kx- omega t + phi) , where E is electric field associated with wave, According this equation, for any value of x, E remains sinusoidal for -oolt t lt oo . Obviously this corresponds to an idealised situation because radiation from ordinary sources consists of finite size wavetrains. In general, electric field remains sinusoidal only for times of order tau_(c) ' which is called coherence time. In simpler language it means that for times of order tau_(c)' a wave will have a definite phase. The finite value of coherence time could be due to many factors, for example if radiating atom undergoes collision with another atom then wave train undergoes an abrupt phase change or due to the fact that an atom responsible for emitting radiation has a finite life time in the energy level from which it drops to lower energy level, while radiating. Concept of coherence time can be easily understood using young's double slit experiment. Let interference patten is observed around point P at time t , due to superposition of waves emanting from S_(1) and S_(2) at times t =(r_(1))/(c) and (r_(2))/(c) respectively, where r_(1) and r_(2) are the distances S_(1) P & S_(2)P . Obviously if (r_(2)-r_(1))/(c) lt lt tau_(e),{"where" " "c = 3xx10^(8)m//s} then, wavetrain arriving at point P from S_(1) & S_(2) will have a definite phase relationship and an interference pattern of good contranst will be obtained. If coherence time is of order 10^(-10) second and screen is placed at a very large distance from slits in the given figure, then:-

KUMAR PRAKASHAN-MICROBES IN HUMAN WELFARE -SECTION - F MULTIPLE CHOICE QUESTIONS(MCQS FROM DARPAN BASED ON TEXTBOOK)
  1. What is included in IPM ? (A) Bio control (B) Bio fertilizer (C) ...

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  2. During formation of bread, due to production of CO2 , by action of whi...

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  3. Find out the name of the microbes from which cyclosporin A (an immunos...

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  4. The quality of which vitamin is increased by LAB? (A) Vitamin A (B) ...

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  5. From what Beer is obtained ? (A) Grape (B) Apple (C) Barley (D)...

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  6. Ladybird is useful to get rid of what? (A) Aphid (B) Mosquito (C)...

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  7. Which process in making of Idli and Dosa is due to LAB? (A) Condensat...

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  8. What is prepared with the help of propioni bacterium ? (A) Swiss Chee...

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  9. Which microbe produces citric acid ? (A) Aceti bacteria (B) Aspergi...

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  10. What is used in Laundry to remove oily blots? (A) Protease (B) Ama...

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  11. What is used to decrease cholesterol in blood ? (A) Stains (B) Lip...

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  12. Instead of fossil fuel, efforts of which bio fuel to be used as energy...

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  13. Where is sedimentation of Flocs taking place in sewage process? (A) A...

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  14. Which bacteria are present in digestive tract of cattle ? (A) Rhizobi...

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  15. Which element is absorbed by mycorrhiza ? (A) Nitrogen (B) Sulphur...

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  16. Who was the first discoverer of antibiotic ? (A) Misher (B) Earnest...

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  17. Which one of the following is not an antibiotic ?

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  18. By the efforts of which institutes, biogas technology is developed ? ...

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  19. Ashbya gossipae produces

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  20. Match the following columns Column

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