Microbial Genetics

Microbial Genetics

Microbial Genetics Genetics: is the science that studies the inheritance of biological characteristics by living things. This subject, also known as heredity, is a wide-ranging science that examines: The transmission of biological properties (traits) from parents to offspring. The expression and variation of those traits. The structure and function of the genetic material and How … Read more Microbial Genetics

VIVA Alert: Basic Microbiology with mnemonics

VIVA Alert Basic Microbiology with mnemonics

VIVA Alert: Basic Microbiology with mnemonics Name one cluster shaped (grape-like) cocci? Staphylococcus aureus Name one chain shaped cocci? Streptococcus spp. What is the difference between Staphylococcus aureus and Streptococcus? S. aureus is cluster shaped and Streptococcus is chain shaped. S. aureus is catalase-positive and Streptococcus is catalase negative. Name any five lactose fermenting organisms? … Read more VIVA Alert: Basic Microbiology with mnemonics

Biofertilizer- Types and Uses

Biofertilizer- Types and Uses

Biofertilizer- Types and Uses Biofertilizer is a substance which contains living microorganisms which, when applied to seeds, plant surfaces, or soil and promotes growth by increasing the supply or availability of primary nutrients to the host plant. Biofertilizers add nutrients through the natural processes of nitrogen fixation, solubilizing phosphorus, and stimulating plant growth through the synthesis of … Read more Biofertilizer- Types and Uses

Edible Vaccines- Plant Used, Steps, Advantages

Edible Vaccines

Edible Vaccines WHAT IS  VACCINE? The vaccine is a biological preparation that improves immunity against a particular disease. It contains an agent that resembles a disease-causing microorganism and is often made from a weakened or killed form of microbe, its toxins or one of its surface proteins. The agent stimulates the body’s immune system to … Read more Edible Vaccines- Plant Used, Steps, Advantages

Human Immunodeficiency Virus (HIV)

Human Immunodeficiency Virus (HIV)

Human Immunodeficiency Virus (HIV) What is HIV? HIV stands for ‘human immunodeficiency virus’. It weakens a person’s immune system by destroying important cells that fight against disease and infection. HIV is a member of the genus Lentivirus, part of the family Retroviridae. It is the causative agent of AIDS.  AIDS is a condition in humans … Read more Human Immunodeficiency Virus (HIV)

Cell Inclusion Bodies

Cell inclusion Bodies

Cell inclusion Bodies Bacterial cell inclusion bodies are otherwise known as granules. Electron microscopic observation reported the presence of both organic and inorganic granules inside the bacterial cell. These granules function as energy storage and these are also involved in reducing osmotic pressure. Some of these granules are found freely moving in the cytoplasm (polyphosphate, … Read more Cell Inclusion Bodies

Immunological Techniques

Immunological Techniques

Immunological Techniques Most of the immunological techniques are based upon the antigen-antibody reactions. Precipitation reactions are one of the important reactions that occur when antigen and antibody come to contact. When a soluble antigen reacts with its antibody in the presence of NaCl at optimal temperature and pH, the antigen-antibody complex forms an insoluble precipitate. … Read more Immunological Techniques

Terminology used in Basic Microbiology

Terminology used in Basic Microbiology

Terminology used in Basic Microbiology Aerobe = organisms that grow in the presence of atmospheric oxygen Anaerobe = grows in absence of free oxygen aerotolerant anaerobes = microbes that grow equally well whether or not oxygen is present facultative anaerobes = microbes that don’t require oxygen for growth but do grow better in its presence … Read more Terminology used in Basic Microbiology

The Bacterial Cell Wall

The Bacterial Cell Wall

The Bacterial Cell Wall The cell wall is the outer most rigid structure which provides the structure to the bacterial cell. Moreover, it helps the cell by providing protection to the cell from osmotic lysis, toxic chemicals, and other pathogens. The chemical structure of the bacterial cell wall is similar in different bacteria. However, the … Read more The Bacterial Cell Wall

Culture media used in microbiology

Culture media used in microbiology

Culture media used in microbiology Image Source: Sigma-Aldrich Nutrient agar(1% to 2%) –> Basal media in microbiology, Supports the growth of all non-fastidious organisms MacConkey Agar—> Differential media for Enterobacteriaceae ( i.e. Lactose fermenting and non-lactose fermenting) Mannitol Salt Agar–> Selective and indicator media for S. aureus Triple Sugar Iron(TSI) medium–> Differentiation of various members … Read more Culture media used in microbiology