chapter 7 Introduction to Microbiology
- How does the bread become spongy? breads are produced from flour of cereals. Dough is formed by mixing of baker’s yeast – Saccharomyces cerevisiae, water, salt and other nece... 1
- Which fuels are obtained from biomass? fuels obtained from biomass is biogas and biodiesel. The biogas is obtained from dung of cattle. The fermentation of cattle dung gives rise... 1
- Which plants are cultivated to obtain the fuel? most popularly used biofuel plants are corn, sugarcane, palm oil, jatropha, soyabean, canola, cottonseed, sunflower and wheat. 1
- What are the benefits of mixing ethanol with petrol and diesel? Ethanol, an alcohol is a clean (smokeless) fuel obtained during fermentation of molasses by the yeast- Saccharomyces.it is easily available... 2
- What is role of microbes in compost production? Composting is a type of waste which is biodegradable so that it can be broken down into different substances. So here microbes carry out the... 2
- Complete the following conceptual picture related to environmental management. Oil spill Microbes Sewage Treatment , Land filling ,Inoculents , Biofuels , Biogas , oil spill 1
- Complete the following conceptual picture with respect to uses. Xanthan gum Weedisides , Toothpaste , pigments , Fertilizers , papers , Chocolates 1
- Microbial enzymes are used instead of chemical catalysts in chemical industry Microbial enzymes are used instead of chemical catalysts in chemical industry because Now a day, instead of chemical catalysts, microbial en... 1
- Enzymes obtained by microbial process are mixed with detergents. Enzymes obtained by microbial process are mixed with detergents because When detergents are mixed with microbial enzymes, they start working... 1
- Use of mutant strains has been increased in industrial microbiology. Use of mutant strains has been increased in industrial microbiology because Mutant strains are genetically improved strains which give highe... 1
- Complete the following conceptual picture. Cleaning Sewage after processing Cleaning , mopping floors , Gardening , Groundwater treatment 1
- Why is it necessary to ban the use of plastic bags? Plastic bags are a very big problem to the environment. They are mostly made of organic polymers which are nothing but long chains of carbon... 1
- Which precautions are necessary for proper decomposition of domestic waste? It is important to take precautions for decomposition of domestic waste or household waste . The containers that held pickles, jams, coffee,... 1
- How the bread and other products produced using baker’s yeast are nutritious? Different types of breads are produced from flour of cereals. Dough is formed by mixing of baker’s yeast – Saccharomyces cerevisiae, water,... 1
- Which are the reasons for increasing the popularity of probiotic products? These are also milk products, but contain active bacteria e.g. Lactobacillus, Acidophilus, Lactobacillus casei, Bifidobacterium bifidum, etc... 2
- Explain the importance of biopesticides in organic farming. Some microbes-containing inoculants are produced by process of fermentation. These inoculants are sprayed on seeds before sowing and some of... 1
- How can the soil polluted by acid rain be made fertile again? Sulphuric acid is present in the acid rain and materials coming out of mines. You know that erosion of metals present in statues, bridges an... 1
- How can the oil spills of rivers and oceans be cleaned? Spilling of petroleum oil occurs in ocean due to various reasons. This oil may prove fatal and toxic to aquatic organisms. It is not easy to... 1
- Which fuels can be obtained by microbial processes? Why is it necessary to increase the use of such fuels? Natural gases such as biogas, ethane, methane can be obtained from the microbial process. It is necessary to use or increase this because it... 2
- Match the pairs ‘A’ group ‘B’ group a. Xylitol 1. Pigment b. Citric acid 2. To impart sweetness c. Lycopene 3. Microbial 'A' group 'B' group a. Xylitol 1. To impart sweetbess b. Citric acid 2. To imart acidity c. Lycopene 3. Pigment d. Nycin 4.Microbial restric... 1
- Rewrite the following statements using correct of the options and explain the completed statements. a. Process of coagulation of milk proteins occurs due to lactic acid. b. Harmful bacteria in like clostridium in the intestine are destroyed... 1