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Engineering
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Yeast is used in the production of

  • Option 1)

    Citric acid and lactic acid

  • Option 2)

    Lipase and pecinase

  • Option 3)

    Bread and beer

  • Option 4)

    Cheese and butter

 
Microbes especially yeasts have been used for the production of beverages like wine, beer, whisky, brandy or rum. Option 1) Citric acid and lactic acid This option is incorrect. Option 2) Lipase and pecinase This option is incorrect. Option 3) Bread and beer This option is correct. Option 4) Cheese and butter This option is incorrect.
Engineering
145 Views   |  

Widal Test is carried out to test:

  • Option 1)

    Malaria

  • Option 2)

    Diabetes mellitus

  • Option 3)

    HIV/AIDS

  • Option 4)

    Typhoid fever

 
As we learnt in    Widal test is taken to confirm whether an individual is affected with typhoid. Option 1) Malaria This option is incorrect. Option 2) Diabetes mellitus This option is incorrect. Option 3) HIV/AIDS This option is incorrect. Option 4) Typhoid fever This option is correct.
Engineering
264 Views   |  

Which part would be most suitable for raising virus-free plants for micropropagation?

  • Option 1)

    Bark

  • Option 2)

    Vascular tissue

  • Option 3)

    Meristem

  • Option 4)

    Node

 
As we learnt in Applications of totipotency - Another important application of the method is the recovery of healthy plants from diseased plants. - wherein Although the plant is infected with a virus, the meristem (apical and axillary) is free of virus. Hence, one can remove the meristem and grow it in vitro to obtain virus-free plants.       This is an Application of totipotency. When the...
Engineering
501 Views   |  

Which one of the following is an example of carrying out biological control of pests/diseases using microbes ?

  • Option 1)

    Trichoderma sp. against certain plant pathogens

  • Option 2)

    Nucleopolyhedrovirus against white rust in Brassica

  • Option 3)

    Bt - cotton to increase contton yield

  • Option 4)

    Lady bird beetle against aphids in mustard

 

As we learnt in concept

These are available in sachets as dried spores which are mixed with water and sprayed onto vulnerable plants such as rassicas and fruit trees, where these are eaten by the insect larvae. In the gut of the larvae, the toxin is released and the larvae get killed. The bacterial disease will kill the caterpillars, but leave other insects unharmed.


Option 1)

Trichoderma sp. against certain plant pathogens

This option is incorrect.

Option 2)

Nucleopolyhedrovirus against white rust in Brassica

This option is incorrect.

Option 3)

Bt - cotton to increase contton yield

This option is correct.

Option 4)

Lady bird beetle against aphids in mustard

This option is incorrect.

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Engineering
259 Views   |  

The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorised as:

  • Option 1)

    Cyanobacteria

  • Option 2)

    Archaebacteria

  • Option 3)

    Chemosynthetic autotrophs

  • Option 4)

    Heterotrophic bacteria

 

option 4

Engineering
258 Views   |  

Monascus purpureus is a yeast used commercially in the production of:

  • Option 1)

    ethanol

  • Option 2)

    streptokinase for removing clots from the blood vessels.

  • Option 3)

    Citric acid

  • Option 4)

    blood cholesterol lowering statins

 

Option 4

Engineering
379 Views   |  

Common cold differs from pneumonia in, that:

  • Option 1)

    Pneumonia is a communicable disease whereas the common cold is a nutritional deficiency disease.

  • Option 2)

    Pneumonia can be prevented by a live attenuated bacterial vaccine whereas the common cold has no effective vaccine.

  • Option 3)

    Pneumonia is caused by a virus while the common cold is caused by the bacterium Haemophilus influenzae.

  • Option 4)

    Pneumonia pathogen infects alveoli whereas the common cold affects nose and respiratory passage but not the lungs.

 
As learnt in @12181 and 12220 pneumonia infects the alveoli (air filled sacs) of the lungs Option 1) Pneumonia is a communicable disease whereas the common cold is a nutritional deficiency disease. This solution is incorrect. Option 2) Pneumonia can be prevented by a live attenuated bacterial vaccine whereas the common cold has no effective vaccine. This solution is incorrect. Option...
Engineering
112 Views   |  

Cirrhosis of liver is caused by the chronic intake of

  • Option 1)

    Opium

  • Option 2)

    Alcohol

  • Option 3)

    Tobacco (Chewing)

  • Option 4)

    Cocaine

 
Option 1) Opium Incorrect option  Option 2) Alcohol Correct option  Option 3) Tobacco (Chewing) Incorrect option  Option 4) Cocaine Incorrect option 
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