Differences Between Bacteria and Viruses
Although bacteria and viruses both are very small to be seen without a microscope, there are many differences between Bacteria and Viruses. Some of the Differences Between Bacteria and Viruses…
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Different Size, Shape and Arrangement of Bacterial Cells
…on the influence of on growth and viability, bacteria are divided into aerobic and anaerobes Aerobic bacteria require oxygen for growth while anaerobes bacteria don’t require bacteria for growth. LarissaC…
Differences Between Exotoxins and Endotoxins
…treatment, clinicallu treatment is based on endotoxin or bacteria itself. Eg. You are given medicine to treat endotoxin or bacteria itself. If you treat bacteria itself, how can bacteria causes…
Techniques of Virus Cultivation
…on host cell. To prepare viruses for vaccine production. Cultivation of viruses can be discussed under following headings: Animal Inoculation Inoculation into embryonated egg Cell Culture 1. Animal Inoculation Viruses…
Differences between Gram Positive and Gram Negative Bacteria
…positive bacteria and gram negative bacteria but the distinction seem not to be clearly made. Pls help suresh Please also add types of diseases caused by them. Morema Amos What…
Gram Staining: Principle, Procedure, Interpretation, Examples and Animation
…Gram Positive and Gram Negative Bacteria, which helps in the classification and differentiations of microorganisms. Principle of Gram Staining When the bacteria is stained with primary stain Crystal Violet and…
Nutrient Agar: Composition, Preparation and Uses
…variety of types of bacteria and fungi, and contains many nutrients needed for the bacterial growth. Composition of Nutrient Agar 0.5% Peptone It is an enzymatic digest of animal protein. Peptone…
Antibiotics: Comprehensive Guide
…growth of bacteria that means no multiplication or generation of bacteria but they do not kill bacteria. Example: tetracycline, chloramphenicol Bactericidal: means those antibiotics that actually kill bacteria by any…
Differences Between Bacteremia and Septicemia
Bacteremia is the simple presence of bacteria in the blood while Septicemia is the presence and multiplication of bacteria in the blood. Septicemia is also known as blood poisoning. S.N.BacteremiaSepticemia…
Immunoglobulin A (IgA) – Structure, Properties, Subclasses, Functions
…against infection , Immunoglobulin A (IgA) is the first line of defense. It works via inhibiting bacterial and viral adhesion to epithelial cells and by neutralization of viruses and bacterial…
Top and Best Microbiology Books
…value of figure legends and Paradigm Boxes Appendix of quick reference summary tables featuring Major Bacteria, Main Pathogenic Bacteria, Medically Important Fungi, and Main Pathogenic Viruses Improved layout to increase…
Acid-Fast Stain- Principle, Procedure, Interpretation and Examples
…the end result? Will acid-fast bacteria be clear? And will non-acid fast bacteria be colored blue with methylene blue? Musamba ismael No because heat heat helps to melt the cell…
Top 10 Microbiology Journals with Impact Factor
…highlighting important developments in our understanding of bacteria, archaea, viruses, fungi and protozoa, their interaction with their environments, how these organisms are harnessed in human endeavor and their impact on…
Differences Between Antigenic Shift and Antigenic Drift
…HIV (human immunodeficiency virus), which causes AIDS, and in certain rhinoviruses, which cause common colds in humans. It also has been suspected to occur in some cancer-causing viruses in humans….
Differences Between B-Cells and T-Cells
…cells inhibit immune system. 16 Function They defend against viruses and bacteria that enter the blood and lymph. They defend against pathogens including protists and fungi that enter the cells….
Potassium Hydroxide Test – Principle, Procedure, Uses and Interpretation
…released which causes the bacterial suspension to become thick and stringy. The viscous and the solution sticks to the loop when touched. On the other hand, Gram positive bacteria are not…
Motility Test – Principle, Procedure, Uses and Interpretation
…allows motile bacteria to migrate readily through them causing cloudiness. The inoculum is stabbed into the center of a semisolid agar deep. Bacterial motility is evident by a diffuse zone…
Flagella – Introduction, Types, Examples, Parts, Functions and Flagella Staining- Principle, Procedure and Interpretation
…ability of certain bacteria to cause disease. Types and Examples of Flagella There are 4 types of flagellar distribution on bacteria: 1. Monotrichous – Single polar flagellum – Example: Vibrio…
Ames Test – Introduction, Principle, Procedure, Uses and Result Interpretation
…by observing whether they cause mutations in sample bacteria. Principle Ames test uses several strains of bacteria (Salmonella, E.coli) that carry a particular mutation. Point mutations are made in the…
Sabouraud Dextrose Agar (SDA) – Composition, Principle, Uses, Preparation and Colony Morphology
…of gram-positive and gram-negative bacteria. Gentamicin is added to further inhibit the growth of gram-negative bacteria. The neutral pH of the Emmons modification seems to enhance the growth of some…
Differences Between Antigen and Antibody
…produce antibodies. Antigens can be bacteria, viruses, or fungi that cause infection and disease. Following are some of the differences between Antigen and Antibody: S.N.AntigenAntibody1 Generally proteins but can be lipids,…
MacConkey Agar- Composition, Principle, Uses, Preparation and Colony Morphology
…agent. Uses of MacConkey Agar MacConkey agar is used for the isolation of gram-negative enteric bacteria. It is used in the differentiation of lactose fermenting from lactose non-fermenting gram-negative bacteria….
Methyl Red (MR) Test- Principle, Procedure and Result Interpretation
…they are used to characterize other groups of bacteria including Actinobacteria. Quality Control of Methyl Red (MR) Test Klebsiella pneumoniae ATCC 13883—MR negative (yellow) Escherichia coli ATCC 25922—MR positive (red)…
Differences Between Diarrhea And Dysentery
…!! Suggest to provide differences bacterial and protozoal (ameobic) dysentery as well ! teeth significantly whiter When some one searches for his vital thing, thus he/she needs to be available…
Catalase Test- Principle, Uses, Procedure, Result Interpretation with Precautions
…ask you pple a question. is it possible that a positive catalase bacteria can be cocci/streptococcus and similarly catalase negative can be staphylococcus….? im working on some unknown halophilic bacteria….
API (Analytical Profile Index) 20E Test – Procedure, Uses and Interpretation
…Biochemical Test Strip which contains dehydrated bacterial media/bio-chemical reagents in 20 separate compartments. Using a pasteur pipette, fill up (up to the brim) the compartments with the bacterial suspension. Add…
Lowenstein-Jensen (LJ) Medium- Composition, Principle, Uses, Preparation and Colony Morphology
…incubation in a 5-10% CO2 atmosphere in order to recover mycobacteria. Mycobacteria, for unknown reasons, are not recovered well from candle extinction jars. Negative culture results do not rule-out active…
Blood Agar- Composition, Preparation, Uses and Pictures
Blood Agar (BA) are enriched medium used to culture those bacteria or microbes that do not grow easily. Such bacteria are called “fastidious” as they demand a special, enriched nutritional…
Oxidase Test- Principle, Uses, Procedure, Types, Result Interpretation, Examples and Limitations
…information required in bacterial identification. It is not sensitive to detect cytochrome oxidase(s) activity in Enterobacteriaceae and other aerobic bacteria, which obviously contain corresponding gene(s). Therefore, Escherichia coli can’t be…
Differences Between Mitosis and Meiosis
…a type of cellular reproduction in which the number of chromosomes are reduced by half through the separation of homologous chromosomes, producing two haploid cells. Following are the differences between Mitosis…