16 Questions
Which of the following is a significant role played by bacteria in the food industry?
Conversion of milk sugar to lactic acid
What is the mode of nutrition exhibited by bacteria?
Autotrophic and heterotrophic
What is the most distinguishing feature of bacteria at the cellular level?
Unicellularity and prokaryotic nature
Which microbial group is commonly used in the manufacture of certain vitamins like B12 and amino acids?
Bacteria
What role do bacteria play in mineral cycles, such as the carbon and nitrogen cycles?
Essential role in mineral cycles in the soil
What is the primary reason for studying bacteria, according to the given text?
Bacteria cause disease and produce important antibiotics
Which of the following is NOT true about photosynthetic bacteria?
They have 70S ribosomes
What is the mode of vegetative reproduction generally observed in filamentous bacteria (actinomycetes)?
Budding
Which of the following is NOT a characteristic of fungi?
They are photosynthetic
What is the primary mode of nutrition for fungi?
Absorption
What is a beneficial effect of fungi?
Decomposition of decayed organic matter
Which of the following is NOT a harmful effect of fungi?
Production of citric acid
What is the major factor governing the activity of algae?
Light intensity
What is the primary mode of reproduction observed in algae?
Sexual reproduction by fusion of gametes from different individuals
Which type of reproduction is absent in bacteria but may occur through processes such as conjugation, transduction, and transformation?
Sexual reproduction by meiosis
What is the primary mode of growth observed in fungi?
Hyphal tip elongation (in true fungi)
Explore the use of different microbial groups such as bacteria, actinomycetes, fungi, and yeast in biological treatment and waste recycling. Learn about the significance of bacteria to mankind, including their role in disease, antibiotic production, mineral cycles, and food production.
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