What are bacteria Slideshare?

Introduction  Bacteria defined as microscopic single celled organism that can penetrate into healthy tissues & start multiplying into vast numbers.  These are unicellular, free living small microorganism which are visible under the light microscope.

What is the most commonly found bacteria?

The following is a comprehensive list of 25 of the most common bacteria and viruses causing HAIs:

• Escherichia coli.
• Klebsiella pneumoniae.
• Morganella morganii.
• Mycobacterium abscessus.
• Psuedomonas aeruginosa.
• Staphylococcus aureus.
• Stenotrophomonas maltophilia.
• Mycobacterium tuberculosis.

What are 5 types of bacteria?

Bacteria are classified into five 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.

What are the 3 ways bacteria are identified?

There are three basic bacterial shapes: Round bacteria called cocci (singular: coccus), cylindrical, capsule-shaped ones known as bacilli (singular: bacillus); and spiral bacteria, aptly called spirilla (singular: spirillum). The shapes and configurations of bacteria are often reflected in their names.

What are the main characteristics of a bacteria?

There are three notable common traits of bacteria, 1) lack of membrane-bound organelles, 2) unicellular and 3) small (usually microscopic) size. Not all prokaryotes are bacteria, some are archaea, which although they share common physicals features to bacteria, are ancestrally different from bacteria.

What is bacteria and its structure?

Bacteria are prokaryotes, lacking well-defined nuclei and membrane-bound organelles, and with chromosomes composed of a single closed DNA circle. They come in many shapes and sizes, from minute spheres, cylinders and spiral threads, to flagellated rods, and filamentous chains.

What are the 10 types of bacteria?

Top Ten Bacteria

• Deinococcus radiodurans.
• Myxococcus xanthus.
• Yersinia pestis.
• Escherichia coli.
• Salmonella typhimurium.
• Epulopiscium spp. The big boy of the kingdom – about as large as this full stop.
• Pseudomonas syringae. Dreaming of a white Christmas?
• Carsonella ruddii. Possessor of the smallest bacterial genome known, C.

What bacteria Cannot be killed by cooking?

Staphylococcus aureus Staphylococcal bacteria can be destroyed by cooking but their toxins are heat resistant and cannot.

What are 2 types of bacteria?

Types

• Spherical: Bacteria shaped like a ball are called cocci, and a single bacterium is a coccus. Examples include the streptococcus group, responsible for “strep throat.”
• Rod-shaped: These are known as bacilli (singular bacillus).
• Spiral: These are known as spirilla (singular spirillus).

What are two methods of identifying bacteria?

Modern Methods for Identifying Microbes

• Identifying Microbes Using PCR. PCR, including Real-Time PCR, is probably the most widely used molecular technique for identifying microbes.
• Microarray-Based Identification.
• Immunological Identification.
• Chemical/Analytical Identification.

What are 5 characteristics of viruses?

These are: 1) attachment; 2) penetration; 3) uncoating; 4) replication; 5) assembly; 6)release. As shown in , the virus must first attach itself to the host cell.

What bacteria Cannot be killed by antibiotics?

Bacteria resistant to antibiotics

• methicillin-resistant Staphylococcus aureus (MRSA)
• vancomycin-resistant Enterococcus (VRE)
• multi-drug-resistant Mycobacterium tuberculosis (MDR-TB)
• carbapenem-resistant Enterobacteriaceae (CRE) gut bacteria.

What kind of slides are used in microbiology?

Microscopic slides –negative stain Negatively stained Bacillus sp. – cylindrical shape Negatively stained cocci – spherical shape 4 Class 1. General microbiology – Morphology of bacterial cell, staining procedures for bacteria, culture media for bacteria, cultivation and isolation techniques for bacteria, preparation of pure cultures.

What kind of bacteria is in your home?

The NSF International study found stove knobs to have some of the highest levels of bacteria in the home. They were often found to have coliform bacteria, yeast, mold and other germs. A common household mistake that could be making you sick is to ignore cleaning this area.

What do the three types of bacteria look like?

What do they look like? Bacilli• Three basic shapes – Rod shaped called bacilli – (buh-sill-eye) – Round shaped called cocci Cocci – (cox-eye) – Spiral shaped• Some exist as single cells, otherscluster together Spiral Cluster of cocci 6. Bacteria are ALIVE!

What kind of media are used in microbiology?

General microbiology – Morphology of bacterial cell, staining procedures for bacteria, culture media for bacteria, cultivation and isolation techniques for bacteria, preparation of pure cultures. Enriched media Loeffler medium (slant for the detection of corynebacteria) Loewenstein-Jensen medium (slant for the detection of mycobacteria)