What Are Biochemical Characteristics?

What are the 7 major types of microorganisms?

Microorganisms are divided into seven types: bacteria, archaea, protozoa, algae, fungi, viruses, and multicellular animal parasites ( helminths )..

What is the importance of studying biochemical characteristics of bacteria?

Important in the identification of a genus and species of bacteria are biochemical tests, including the determination of the kinds of nutrients a cell can use, the products of its metabolism, the response to specific chemicals, and the presence of particular characteristic enzymes.

What are the characteristics of microbiology?

Key TakeawaysMicroorganisms are divided into seven types: bacteria, archaea, protozoa, algae, fungi, viruses, and multicellular animal parasites ( helminths ).Each type has a characteristic cellular composition, morphology, mean of locomotion, and reproduction.More items…

What is the principle of biochemical test?

2. (Sugar Fermentation Test) Aim: To determine the ability of microbes to ferment carbohydrates with the production of an acid and/or gas. Principle: Sugars are metabolized through different metabolic pathways depending on typesof microbial species and aerobic or anaerobic environment .

What are 4 types of bacteria?

Bacteria are classified into 5 groups according to their basic shapes: spherical (cocci), rod (bacilli), spiral (spirilla), comma (vibrios) or corkscrew (spirochaetes). They can exist as single cells, in pairs, chains or clusters. Artwork of bacterial cells becoming resistant to antibiotics.

How do you identify bacteria?

When identifying bacteria in the laboratory, the following characteristics are used: Gram staining, shape, presence of a capsule, bonding tendency, motility, respiration, growth medium, and whether it is intra- or extracellular.

How do biochemical tests help in identifying a specific bacteria?

Biochemical tests help identify an unknown bacterial species because they determine certain characteristics of the bacteria in question that make it possible to determine the species. … Describe the role a microbiologist and a medical laboratory technician would play in solving this case of the unknown bacteria.

What do biochemical tests determine?

Biochemical tests determine bacterial CO2 requirement, H2S production, urease activity, and growth inhibition by thionin or basic fuchsine, etc. Commercial biochemical identification systems such as the API 20 NE® (BioMérieux) may be used.

What are the different types of biochemical test?

Summary of Biochemical TestsCatalase Test.Mannitol Salt Agar (MSA)Blood Agar Plates (BAP) Streak-stab technique.Taxos P (optochin sensitivity testing)Taxos A (bacitracin sensitivity testing)CAMP Test.Bile Esculin Agar.Nitrate Broth.More items…

What are biochemical activities?

A Few Biochemical/Physiological Properties Used for identification of bacteria include: nutrient utilization (carbohydrate utilization, amino acid degradation, lipid degradation), resistance to inhibitory substances (high salt, antibiotics, etc.), enzyme production (catalase, coagulase, hemolysins, etc.)

What are the 7 types of bacteria?

Shapes of bacteriaComma-shaped bacteria – e.g. Vibrio Cholera.Spherical-shaped bacteria (Cocci) – e.g. Staphylococcus and Streptococcus.Rod-shaped bacteria (Bacilli) – e.g. E.Coli and Salmonella.Spiral-shaped bacteria (Spirilla) – e.g. Treponema and Borellia.Flagellated bacteria – e.g. Tetanus Bacteria.

What are the biochemical test for bacteria identification?

Biochemical tests that investigate the enzymatic activities of cells are powerful tests in the identification of bacteria. In the research lab, a microbiologist would be begin by examining the cell morphology, colony morphology, Gram stain reaction, and environment from which the bacterium was isolated.

What is an example of a biochemical reaction?

Biochemical reactions are chemical reactions within living things. For example, photosynthesis. How do enzymes speed up biochemical reactions? They reduce the amount to necessary activation energy.

How do you perform a biochemical test?

MethodInoculate a tube containing citrate medium with a small amount of bacteria. It is also possible to streak or perform a deep inoculation into “Simmons citrate tube”.Incubate at 30-37ºC during 24-48 h.

How do you identify unknown bacteria?

Begin the process of identifying unknown bacteria by observing their physical characteristics, such as cell wall, shape and linkages. Use standard laboratory procedures, like cell staining, culturing and DNA sequencing to further narrow down your identification.