What is Nucleus? Nucleus Properties The Nucleus is an important cell organelle that is present in the eukaryotic cell. It is derived from the Latin word, ‘nucleus’ or ‘ nuculeus’. It means kernel or seed. It is first described by Robert Brown as the cell organelle. It was named chromatin … Read more
Cell membrane (Plasma membrane) The outer thin membrane or the layer of the living cell is known as the cell membrane. It is also known as the plasma membrane in animal cells. In the plant cells, it is known as plasmalemma. The term cell membrane was given by Nageli and … Read more
Mitochondria Properties Mitochondria is the cell organelle which is filamentous and granular structure. It is present in higher plants, animals, and some microorganisms. It is absent in bacteria but is found in algae, protozoa, and fungi. To carry out the energy metabolism, mitochondria have got the lipoprotein framework. It consists … Read more
Golgi body Properties Golgi body or complex is an organelle that is bound by a membrane in eukaryotic cells. The Golgi body is also called as Golgi apparatus, Golgi complex, lipochondrion, Barker’s body, Dalton Complex, and Apparato Reticulare. Golgi complex may have distinct subunits called Golgiosomes, idiosomes, or dictyosomes. It … Read more
Endoplasmic Reticulum (ER) In 1897, Garnier observed the Endoplasmic Reticulum (ER) with a light microscope. Ergastoplasm was the term coined by him. In 1945 Porter first reported the Endoplasmic Reticulum. It was discovered independently by Porter and Thompson. It is a continuous membrane system. At one end, it connects the … Read more
1) What is the genome present inside the virus? Either DNA or RNA but not both. 2) What is the genome present in Coronavirus? RNA 3) Can we observe virus in general laboratory using a light microscope? No, they are too small whose size ranges from 20-250 nm in size. … Read more
1) What is Mycology? It is the study of fungi which includes yeasts and molds. 2) Fungi is prokaryotic or eukaryotic? Eukaryotic 3) Example of a unicellular eukaryotic organism? Yeast 4) What are saprophytes? Those organisms which depend on( live on) dead and decaying organism are saprophytes. Example: Fungi 5) … Read more
1) What is a parasite? The organism that depends on the host (other organisms) for all of its lifecycle or for some parts of its lifecycle is known as a parasite. 2) What is the host? The host is any organism or animal that harbors the parasite. There it provides … Read more
Medical Disclaimer: The information presented on this page is only for academic and study purposes and must not be used for the purpose of treatment. If you are not feeling well, please consult with your physician or doctor. Today, the world is still under the threat of pandemic COVID-19. Different countries … Read more
Differences between terminologies used in Microbiology Bacteroides and Bacteroids Bacteroides = It is a Gram-negative obligate anaerobic bacteria. Bacteroids= It is the morphological form of the nitrogen-fixing bacteria like Rhizobium which is irregular shaped and is present in the root nodules of legumes. Actinomyces and Actinomycetes Actinomyces = It is … Read more
Outbreak of Wuhan pneumonia 2019-20 (2019-nCoV) The recent outbreak of Wuhan pneumonia has threatened China and the nearby states. Travelers from the Wuhan city being suffered from fever and cough are on strict observations at the airports. Medical authorities in the different international airports are supervising the travelers as to … Read more
Ideonella sakaiensis- Plastic eating bacteria Today the use of plastic and the pollutants has been the global threat. It has created an impact on the terrestrial as well as the marine ecosystem. Though the use of plastic has to comfort our living style, the lack of proper management has created … Read more
Hepatitis is a liver infection. It is caused by the Hepatitis C virus which is a blood-borne virus. It is a short term illness but it can be asymptomatic until decades after the infection. Chronic Hepatitis C is a serious disease that can result in long term health problems and … Read more
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 … Read more
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 … Read more
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) … Read more