Commonly asked Interview Questions for Microbiologist with Answers

1.What is the difference between procaryotic and eukaryotic cells? Ans. Prokaryotic cells differ from eucaryotic cells in lacking a membrane bound nucleus and other cell organelles. They are much smaller in size (Typically 0.2-2.0 mm in diameter) compared to the eukaryotic cells (Typically 10-100 mm in diameter). Prokaryotic cells usually have a complex cell wall while eukaryotic […]

Beneficial Role of Microorganisms in Food Industry

Microorganisms play an important role in food industry. As already discussed in the earlier article Contributions of Microbiology in Food Industry, they are used in production of various food products, and are also responsible for food spoilage thereby causing intoxication and diseases. Microbial contamination of food products takes places usually on the way from the […]

How Microbiology contributes to the Pharmaceutical Industry?

The most important contribution of microbiology to the pharmaceutical industry is the development of antibiotics. All antibiotics were originally the products of microbial metabolism, however the recent genetic manipulations have enabled the production of more enhanced drugs. Vaccines are also a very important contribution of microbiology towards development of drugs. The production of vaccines against […]

Contributions of Microbiology in Food Industry

Food Microbiology covers studies on: Food spoilage by different kinds of microorganisms such as bacteria and fungi Testing of Food/ food products for microbial contamination Methods to be employed for prevention of food spoilage and preservation techniques Use of various microorganisms in production of various food products Microorganism Growth and Food Spoilage Different food products […]

Beneficial and Detrimental Roles of Microorganisms

Microorganisms occupy every small niche of the ecosystem and influence us in many ways. Their influence on human life is generally beneficial but at times can also be detrimental. The diversified role of microbes begins at their natural habitats. Elements as carbon, nitrogen, oxygen, sulphur, and phosphorus are basic requirement for life forms to survive. […]

What are the key activities in a Microbiology laboratory?

Microbiological laboratories are involved primarily in culturing, examination and identification of microorganisms. These processes involve a number of techniques that a microbiologist should be well acquainted with. The basic techniques practiced in a microbiological laboratory are 1.Aseptic techniques and Sterilization: Autoclave is the instrument used in the microbiology labs for sterilization of all types of […]

Familiarize with culture media-the growth and survival media of microorganisms

The artificial culture and maintenance of microorganisms is the basic necessity of the modern day research. Culturing of microorganism requires a supply of the necessary nutrients in the form of a culture media, together with the provision of appropriate conditions such as temperature, pH and oxygenconcentration.A culture medium is a solid or liquid preparation that […]

What conditions are favourable to growth of Microorganisms?

As all living organisms, microorganisms also require a combination of various physical and chemical factors for their growth and multiplication. Although individual cells approximately double in size during their lifetime this change is not very significant. Microbial growth actually refers to increase in numbers of the cells. The requirements for microbial growth can be divided […]

Structure and Function of Prokaryotic Cells

Prokaryotic cells fall into a size range of about 1–5µm and hence can be observed clearly by microscopes. However, some prokaryotic cells may be larger than this. A prokaryotic cell contains external and internal structures. Capsule, flagella, axial filaments, fimbriae, and pili are present external to the cellwall, while interior of the bacterial cell contains […]

General Classification and Characterization of Microorganisms

Classification of living organisms is referred to as taxonomy and it aims to classify living organisms by differentiating them and establishing relationships between groups of organisms. The kingdom of living organisms was termed as domain by Carl R. Woese in 1978.Organisms are grouped in three domain systems namely eukarya, archaea and bacteria, primarily on the […]