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प्रश्न
Give reasons.
A refrigerator is used in almost every home.
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उत्तर
A refrigerator is used in almost every home because it prevents the spoilage of food. Refrigerator provides an optimum environment for storage of vegetables, fruits, and cooked and uncooked food. If an optimum temperature is not provided, it can lead to the growth of bacteria and fungi, thus leading to spoilage of food.
संबंधित प्रश्न
Match the organisms in Column A with their action in Column B.
| A | B | ||
| (i) | Bacteria | (a) | Fixing Nitrogen |
| (ii) | Rhizobium | (b) | Setting of curd |
| (iii) | Lactobacillus | (c) | Baking of bread |
| (iv) | Yeast | (d) | Causing Malaria |
| (v) | A protozoan | (e) | Causing Cholera |
| (vi) | A Virus | (f) | Causing AIDS |
| (g) | Producing antibodies |
Give scientific reasons.
Use of mutant strains has been increased in industrial microbiology.
Who am I?
I reproduce mainly by cell division.
Name the four major groups of Microbes.
Paheli watched her grandmother making mango pickle. After she bottled the pickle, her grandmother poured oil on top of the pickle before closing the lid. Paheli wanted to know why oil was poured? Can you help her understand why?
Assertion (A): Boiling milk is a method of preservation.
Reason (R): Probiotic is a method of preserving milk.
Name the scientist who first discovered the penicillin antibiotic. Can you name any other known antibiotic?
Which of the following best describes microorganisms based on their visibility to the human eye?
Which of the following best characterizes the relationship between microorganisms and human welfare?
What is the fundamental distinction between solitary microorganisms and colony microorganisms in terms of their survival mechanisms?
