Multiple Choice Questions

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Stirred -tank bioreactors have been designed for 

  • the addition of preservatives of the product

  • purification of the product

  • ensuring anaerobic conditions in the culture vessel

  • ensuring anaerobic conditions in the culture vessel


D.

ensuring anaerobic conditions in the culture vessel

The most common type of aerobic bioreactor in use today is the stirred tank- reactor, which may feature a specific internal configuration designed to provide a specific circulation pattern. The stirred tank bioreactor have been designed for the availability of oxygen throughout the processes.

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Which one of the following is one of the cahracteristics of a biological community?

  • Stratification

  • Natality

  • Mortality 

  • Mortality 

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Which one of the following statemtents about morula in human is correct?

  • It has almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA

  • It has far less cytoplasm as well as less DNA than in an uncleaved zygote

  • It has more or less equal quantity of cytoplasm and DNA as in uncleaved zygote

  • It has more or less equal quantity of cytoplasm and DNA as in uncleaved zygote

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The two gases making highest relative contribution to the green house gases are

  • CO2 and CH4

  • CH4 and NO2

  • CFCs and N2O

  • CFCs and N2O

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Which one of the following is not used in organic farming?

  • Glomus

  • Earthworm

  • Oscillatoria

  • Oscillatoria

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The part of fallopian tube closest to the ovary is 

  • isthmus

  • infundibulum

  • cervix

  • cervix

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An imporved variety of trasgenic basmati rice

  • does not require chemical fertilisers and growth hormones

  • gives high yield nd is rich in vitamin-A

  • is completely resistant to all insect pests and diseases of paddy

  • is completely resistant to all insect pests and diseases of paddy

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Infectionus proteins are present in

  • geminiviruses

  • prions

  • viroids

  • viroids

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Which one of the following symbols and its representation, used in human pedigree analysis is correct?

  •  = Mating between relatives

  •  = unaffected male

  •  = Unaffected female

  •  = Unaffected female

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