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Question
Write short notes on the following:
Brewer's yeast
Solution
Saccharomyces cerevisiae is a widely used fungal species in preparation & softening of bakery products like dough.
RELATED QUESTIONS
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?
Which of the following is white button mushroom?
(A) Agaricus bisporus
(B) Pleurotus Florida
(C) Volvariella volvacea
(D) Candida species
Give the biological name of the following:
The microbe used to produce Swiss cheese.
Answer the following question:
Why does 'Swiss Cheese' develop large holes?
Name the microbes that help the production of the following product commercially:
Citric acid
Lactic acid is formed by the process of:
Milk is converted to curd by:
A small amount of curd added to the milk to initiate the curdling is called
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 ______.
Big holes in Swiss cheese are made by ______.
Which species of Penicillium produces Roquefort cheese?
Which type of food would have lactic acid bacteria? Discuss their useful application.
Which one of the following factors is responsible for activation of protoxin into active Bt toxin of Bacillus thuringiensis?
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?
