Tag: commercial use of microorganism

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Multiple choice zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

The germ theory of diseases was established by

  1. Louis Pasteur

  2. Robert Koch

  3. Lister

  4. Alexander Fleming
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Louis Pasteur proposed the germ theory of disease. This theory explains that the disease is caused by the microorganisms which cannot be seen by naked eyes. These are small and microscopic organisms. These organisms are dependent on the host for activities like growth. He demonstrated that fermentation is the result of the action of microorganism on sugar. 

Thus, the correct answer is 'Louis Pasteur'.

Multiple choice zoology introduction to microbiology commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products food production and microorganisms

Bacteria responsible for fermentation of dairy milk are

  1. Lactobacillus

  2. Hay Bacillus

  3. Acetobacter

  4. Rhizobium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The most common bacteria responsible for fermentation of dairy milk are Lactobacillus species. Bacteria like Lactococcus and Leuconostoc are also used in production of fermented milk products. Lactobacillus produce lactic acid from lactose by the process of glucose fermentation. This also increases acidity and sours and thickens the milk.

Thus, the correct answer is 'Lactobacillus.'

Multiple choice zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

The fermenting agent of dosa and idli is

  1. Saccharomyces cerevisiae

  2. Leuconostoc mesenteroides

  3. Streptococcus faecalis

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The fermentation of Idli and Dosa batter is a complex process involving multiple lactic acid bacteria, including Leuconostoc mesenteroides and Streptococcus faecalis.

Multiple choice zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

Which one is not used in the production of Yoghurt?

  1. Streptococcus lactis

  2. Streptococcus thermophilus

  3. Lactobacillus bulgaricus

  4. Acetobacter aceti
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Yoghurt are produced from cultures of Lactobacillus and Streptococcus.Acetobacter aceti has no role in production of yoghurt.

Correct answer-D

Multiple choice zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

Which group is responsible for formation and flavour of yogurt?

  1. Bacillus megathermus and Xanthomonas sp.

  2. Bacillus subtilis and E.coli

  3. Rhizobium meliloti and Azotobacter

  4. Lactobacillus casei and Streptococcus thermophilus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lactobacillus and Streptococcus that are capable of lactic acid fermentation are used in the flavouring of yogurt.

Correct answer-D

Multiple choice zoology microbes in human welfare commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

Smack is chemically?

  1. Diacetyl morphine

  2. Diethyl morphine

  3. Ethyl alcohol
  4. $3-4$ Diacetylmorphine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 Smack is one of the street names of heroin which is chemically diacetylmorphine. It is generally produced by the acetylation of crude morphine and is a narcotic analgesic that is used in the treatment of severe pain. Illicit heroin may be smoked or solubilised with a weak acid and then injected.

So, the correct answer is 'Diacetylmorphine'.
Multiple choice zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

Large holes in Swiss cheese are formed due to production of a large amount of ${CO} _{2}$ by

  1. Propionebacterium

  2. Mycobacterium

  3. Saccharomyces

  4. Penicillium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Propionibacterium Sharmani or P.Sharmani is the bacterium used for the production of a large amount of CO2 for making large holes in cheese.

so, the correct option is 'Propionibacterium'.

Multiple choice biology introduction to microbiology food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms commercial use of microorganism microbes in household and industry

........... is used to make wine and bread.

  1. Amoeba

  2. Yeast

  3. Tradescantia

  4. Rheo leaf
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yeast is a single-celled, microscopic fungus which uses sugar as food. Ethanol fermentation is a biological process of converting sugars to alcohol and carbon dioxide. It is performed by yeasts in the absence of oxygen. 

So, the correct answer is option C.

Multiple choice biology introduction to microbiology food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms commercial use of microorganism microbes in household and industry

Why yeast is used in baking industry

  1. It reproduces rapidly

  2. Yeast produces carbon dioxide during respiration

  3. Both A and B

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yeast is used in baking because it reproduces rapidly and performs fermentation, which releases carbon dioxide gas. This gas gets trapped in the dough, causing it to rise.

Multiple choice biology introduction to microbiology food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms commercial use of microorganism microbes in household and industry

What is the basis of using yeast is baking industry? 

  1. Bubbles of gas fill the dough

  2. Bubbles of gas increase its volume

  3. Both A and B

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yeast reproduces rapidly and produces carbon dioxide during respiration. Bubbles of the gas fill the dough and increase its volume.