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Microbes in Human Welfare · Question 30

AIPMT 2012 (Mains)MCQMedium📈 Topic in 75% papers+4−1
1

Read the following four statements (A-D) : How many of the above statements are wrong ?

  1. Two
  2. One
  3. Four
  4. Three

Answer

(4) Three

Solution

A: Wrong. As per NCERT, the yellowish fluid colostrum secreted during the initial days of lactation has abundant antibodies (IgA), not antigens, to protect the infant.

B: Wrong. Chikungunya is a viral disease transmitted by the Aedes mosquito, not a bacterial one.

C: Correct. As per NCERT, healthy (virus-free) plants can be recovered from diseased plants by removing the meristem and growing it in vitro.

D: Wrong. As per NCERT, wine and beer are produced without distillation, whereas whisky, brandy and rum are produced by distillation of the fermented broth; also beer is made from malted barley, not grape juice.

∴ Three statements (A, B and D) are wrong.

Answer: (4)

AIPMT 2012 (Mains)

Keep practising — Microbes in Human Welfare

2

Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition?

  1. Azotobacter
  2. Aspergillus
  3. Glomus
  4. Trichoderma
AIPMT 2012 (Prelims)
3

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

  1. Ethanol
  2. Streptokinase for removing clots from the blood vessels
  3. Citric acid
  4. Blood cholesterol lowering statins
AIPMT 2012 (Prelims)
4

A patient brought to a hospital with myocardial infarction is normally immediately given

  1. Penicillin
  2. Streptokinase
  3. Cyclosporin A
  4. Statins
AIPMT 2012 (Prelims)
5

A nitrogen-fixing microbe associated with Azolla in rice fields is

  1. Tolypothrix
  2. Spirulina
  3. Frankia
  4. Anabaena
AIPMT 2012 (Prelims)
6

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

  1. Trichoderma sp. against certain plant pathogens
  2. Ladybird beetle against aphids in mustard
  3. Nucleopolyhedrovirus against white rust in Brassica
  4. Bt-cotton to increase cotton yield
AIPMT 2012 (Prelims)
7

Yeast is used in the production of

  1. Citric acid and lactic acid
  2. Lipase and pectinase
  3. Bread and beer
  4. Cheese and butter
AIPMT 2012 (Prelims)
8

Read the following statement having two blanks (A and B): “A drug used for (A) patients is obtained from a species of the organism (B) .” The one correct option for the two blanks is:

  1. A Organ-transplant, B Trichoderma
  2. A AIDS, B Pseudomonas
  3. A Swine flu, B Monascus
  4. A Heart, B Penicillium
AIPMT 2011 (Mains)
9

Consider the following statements (A-D) about organic farming. Which of these statements are correct?

  1. (B) and (C) only
  2. (B), (C) and (D)
  3. (C) and (D) only
  4. (A) and (B) only
AIPMT 2011 (Mains)
10

Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct?

  1. Acetobacter aceti – acetic acid
  2. Clostridium butylicum – lactic acid
  3. Aspergillus niger – citric acid
  4. Yeast – statins
AIPMT 2011 (Mains)
11

The most common substrate used in distilleries for the production of ethanol is :

  1. Ground gram
  2. Molasses
  3. Soyabean
  4. Corn meal
AIPMT 2011 (Prelims)

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