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Test: Microbes in Household Products, Industrial Products (January 9) - NEET MCQ


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10 Questions MCQ Test - Test: Microbes in Household Products, Industrial Products (January 9)

Test: Microbes in Household Products, Industrial Products (January 9) for NEET 2024 is part of NEET preparation. The Test: Microbes in Household Products, Industrial Products (January 9) questions and answers have been prepared according to the NEET exam syllabus.The Test: Microbes in Household Products, Industrial Products (January 9) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Microbes in Household Products, Industrial Products (January 9) below.
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Test: Microbes in Household Products, Industrial Products (January 9) - Question 1

Which bacterium is responsible for the production of large holes in Swiss cheese?

Detailed Solution for Test: Microbes in Household Products, Industrial Products (January 9) - Question 1
  • Propionibacterium sharmanii is responsible for the production of large holes in Swiss cheese. This is a process that occurs during the cheese's aging process.
  • Propionibacterium sharmanii is a type of bacteria that can convert lactic acid into propionic acid, carbon dioxide, and water. This bacterium is specifically used in the production of Swiss cheese.
  • During the cheese-making process, the cheese is warmed, which encourages the growth of Propionibacterium sharmanii. As the bacteria metabolize the lactic acid, they produce carbon dioxide gas.
  • The carbon dioxide gas cannot escape the cheese, which is semisolid, leading to the formation of bubbles or holes within the cheese.
  • As the cheese ages, the bacteria continue to produce gas, and the holes, or 'eyes', in the cheese continue to grow larger. The size of the holes can be controlled by adjusting the temperature and aging time of the cheese.
Test: Microbes in Household Products, Industrial Products (January 9) - Question 2

Wine and beer are produced directly by fermentation. Brandy and whisky require both fermentation and distillation. This is because

Detailed Solution for Test: Microbes in Household Products, Industrial Products (January 9) - Question 2

Beverages of low alcoholic content (less than about 9% alcohol) are fermented from grains and are usually considered to be beers. Wines, on the other hand, are fermented to a higher percentage of alcohol (10 - 18% alcohol) and are usually fermented from fruit juice. Higher levels of alcohol kill or inhibit bacteria stopping spoilage as well as fermentation. Vodka, whiskey, and other alcoholic beverages with alcohol contents well above 20% are produced by distilling alcohol from a yeast-fermented beverage. Many liquors are produced by using distilled alcohol (as high as 95% alcohol) to extract various flavoring materials after which the resulting extract is diluted with water and often sugar to make a flavored alcoholic beverages. Unless the alcoholic content of the resulting beverage is well above 15%, the material will not be stable and may start to ferment or even decay in storage. Hence, most liquors are atleast 20% alcohol.

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Test: Microbes in Household Products, Industrial Products (January 9) - Question 3

An enzyme used in cheese-making is

Detailed Solution for Test: Microbes in Household Products, Industrial Products (January 9) - Question 3

Rennet is extracted from the stomach of the calf and is used to prepare cottage cheese.

Test: Microbes in Household Products, Industrial Products (January 9) - Question 4

Which of the following antibiotics is used to cure throat infections?

Detailed Solution for Test: Microbes in Household Products, Industrial Products (January 9) - Question 4

Among the given antibotics, tetracyclines, auromycins obtained from Streptomyces aureofaciens is used to cure whooping cough. Some other antibiotics  are also found  useful e.g. chloramphenicol, erythromycin.

Test: Microbes in Household Products, Industrial Products (January 9) - Question 5

Which of the following organisms is used in the production of beverages?

Detailed Solution for Test: Microbes in Household Products, Industrial Products (January 9) - Question 5

The yeast Saccharmyces cerevisiae, also known as brewer's yeast, is used for fermenting malted cereals an fruit juices to produce ethanol (ethyl alcohol). Microbes (yeasts in particular) have been used for the production of beverages, such as wine, beer, whisky, brandy and rum.

Test: Microbes in Household Products, Industrial Products (January 9) - Question 6

Big holes in Swiss cheese are formed as a result of

Detailed Solution for Test: Microbes in Household Products, Industrial Products (January 9) - Question 6

Large holes in Swiss cheese are formed by the CO2 produced (causing holes) by a bacterium called Propionibacterium shermanii.

Test: Microbes in Household Products, Industrial Products (January 9) - Question 7

The dough in bread making is fermented by

Detailed Solution for Test: Microbes in Household Products, Industrial Products (January 9) - Question 7

The dough used for making bread is fermented by saccharomyces cerevisiae or commonly called baker’s yeast. Co2 released during the process of fermentation gives a puffy appearance to the dough. It is used to make foods like idli, dosa, bread, etc.

Test: Microbes in Household Products, Industrial Products (January 9) - Question 8

______ produced by bacterium Streptococcus and modified by genetic engineering is used as a clot buster for removing clots from the blood vessels of patients who have undergone myocardial infarction leading to heart attack. 

Detailed Solution for Test: Microbes in Household Products, Industrial Products (January 9) - Question 8

Streptokinase (Tissue Plasminogen Activator or TPA) is an enzyme obtained from the cultures of some haemolytic bacterium Streptococcus and modified genetically to function as clot buster. It has fibrinolytic effect. Therefore, it helps in clearing blood clots inside the blood vessels in patients who have undergone myocardial infarction leading to heart attack, through dissolution of intravascular fibrin.

Test: Microbes in Household Products, Industrial Products (January 9) - Question 9

The fungus involved in the ripening of Roquefort cheese gives it the unique

Detailed Solution for Test: Microbes in Household Products, Industrial Products (January 9) - Question 9

Roquefort cheese is formed by ripening with the fungi penicillium roqueforti, for a particular flavour.

Test: Microbes in Household Products, Industrial Products (January 9) - Question 10

Which of the following antibiotics was extensively used to treat American soldiers wounded in World War II?

Detailed Solution for Test: Microbes in Household Products, Industrial Products (January 9) - Question 10

In 1940, E. Chain and H. Florey obtained a relatively stable preparation of penicillin, which was extensively used to treat wounded American soldiers in World War II. 

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