Food Processing And Industrial Production Test

Food Processing And Industrial Production

This is online test 03 for CBSE class 12 Biology Microbes in Human Welfare (Food processing and industrial production).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Which of the following group of diseases are treated using antibiotics?
  • A
    Common cold, malaria, plague
  • B
    Leprosy, common cold, plague
  • C
    Plague, diphtheria, whooping cough
    Correct
  • D
    Diphtheria, leprosy, common cold
2
The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorized as
  • A
    Cynobacteria
  • B
    Heterotrophic bacteria
    Correct
  • C
    Archaebacteria
  • D
    Chemosynthetic autotrophs
3
Monascus purpureus is a yeast used commercially in the production of
  • A
    Blood cholesterol lowering statins
    Correct
  • B
    Citric acid
  • C
    Streptokinase for removing clots from the blood vessels
  • D
    Ethanol
4
Two microbes found to be very useful in genetic engineering are
  • A
    Escherichia coli and Agrobacterium tumefaciens
    Correct
  • B
    Diplococcus sp. and Pseudomonas sp.
  • C
    Crown gall bacterium and Caenorhabditis elegans
  • D
    Vibrio cholerae and a tailed Bacteriophage
5
Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct?
  • A
    Clostridium butyricum - lactic acid
    Correct
  • B
    Aspergillus niger - citric acid
  • C
    Acetobacter aceti - acetic acid
  • D
    Yeast – statins
6
Which of the following is not an application of fermentation?
  • A
    Vine industry
  • B
    Manufacture of antibiotics
    Correct
  • C
    Curing of tea
  • D
    Tanning of leather
7
Bioactive molecule that is used as an immunosuppressive agent in organ-transplant patient obtained from Trichoderma polysporum is
  • A
    Cyclosporine
  • B
    Cyclosporin A
    Correct
  • C
    Homulin
  • D
    Tetracycline
8
Enzyme immobilization is
  • A
    Conversion of inactive enzyme into active enzyme
  • B
    Providing enzyme with protective covering
    Correct
  • C
    Conversion of active enzyme into inactive enzyme
  • D
    Changing pH
9
Propionbacterium sharmanjii is used to prepare Swiss cheese is due to
  • A
    Production of large amount of \({H_2}\) gas
  • B
    Production of large amount of \(C{O_2}\) gas
    Correct
  • C
    Production of acetic acid
  • D
    Production of lactic acid
10
Assertion: Dough used for making food such as dosa and idli is fermented by bacterial. Reason: The puffed-up appearance of dough is due to the production of lactic acid.
  • A
    Both assertion and reason are incorrect
  • B
    Both assertion and reason are correct
  • C
    Assertion is correct but reason is incorrect
    Correct
  • D
    Assertion is incorrect but reason is correct