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प्रश्न
Big holes in Swiss cheese are made by ______.
पर्याय
a machine
a bacterium that produces methane gas
a bacterium producing a large amount of carbon dioxide
a fungus that releases a lot of gases during its metabolic activities
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उत्तर
Big holes in Swiss cheese are made by a bacterium producing a large amount of carbon dioxide.
Explanation:
The big holes in Swiss cheese are formed by the bacterium Propionibacterium shermanii, which produces a large amount of carbon dioxide (CO2) during fermentation. The CO2 gets trapped inside the cheese, forming characteristic round holes known as “eyes”.
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संबंधित प्रश्न
Bacteria cannot be seen with the naked eyes, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes with the help of a microscope, which sample would you carry and why?
Give examples to prove that microbes release gases during metabolism.
In which food would you find lactic acid bacteria? Mention some of their useful applications.
Name some traditional Indian foods made of wheat, rice and Bengal gram (or their products) which involve use of microbes.
Find out the role of microbes in the following:
Single cell protein (SCP)
Give the biological name of the following:
The microbe used to produce Swiss cheese.
Give the biological name of the following:
A symbiotic nitrogen-fixing bacterium found in root nodules.
Answer the following question:
Name the group of bacteria involved in setting milk into curd. Explain the process they carry in doing so. Write another beneficial role of such bacteria.
Name the microbes that help the production of the following product commercially:
Citric acid
Which of the following pair is correctly matched for the product produced by them?
How is milk converted into curd? Explain the process of curd formation.
List the advantages of biogas plants in rural areas.
Which of the following used in Swiss cheese?
The vitamin whose content increases following the conversion of milk into curd by lactic acid bacteria is ______.
Why does ‘Swiss cheese’ have big holes?
What is the source organism for ECORI, restriction endonuclease?
Which species of Penicillium produces Roquefort cheese?
Which type of food would have lactic acid bacteria? Discuss their useful application.
Home-made fruit juices are turbid, while the bottled ,fruit juices purchased from the market are clear. Give a reason for this difference.
Read the passage given below carefully and answer the questions that follow:
|
The bacterium Bacillus thuringiensis serovar israelensis (Bti) is commercially prepared in various formulations such as liquid, water dispersible granules, powders, and pellets. It is used as a larvicide all over the world due to its ability to produce a toxic protein that primarily targets the larvae of mosquitoes. In Sweden, Bti has been applied on a large scale in the form of commercially available granular formulation Vecto Bac G (Valent BioScience, USA). The applications have taken place in the lower Dalalven River Area to control mass outbreaks of the floodplain mosquito Aedes sticticus. |
- Why does the toxic protein kill the insects but not the bacterium?
- Can the formulation Vecto Bac G be used to eliminate the species of mosquito referred to above? Why?
Which of the following microbes is NOT involved in the preparation of household products?
- Aspergillus niger
- Lactobacillus
- Trichoderma polysporum
- Saccharomyces cerevisiae
- Propionibacterium sharmanii
Choose the correct answer from the options given below:
