Myxococcus xanthus - sohs
... • Habitat – Organic soil (has to have pH 5- 8) Can also live in rockier terrain • Special Adaptations - 2 types of locomotion 1. Type IV Pilli (used as a hook) 2. Mucus Secretion (helps it move in a 'gliding' fashion) ...
... • Habitat – Organic soil (has to have pH 5- 8) Can also live in rockier terrain • Special Adaptations - 2 types of locomotion 1. Type IV Pilli (used as a hook) 2. Mucus Secretion (helps it move in a 'gliding' fashion) ...
Week 8
... Objective: Students will gain an understanding of the cellular structure common to all eukaryotic cells but not found in prokaryotic cells. Activity: Complete warm up. Activity: Complete lecture on Activity: Complete remaining parts of the Review eukaryotic cell structures Eukaryotic cells. cell lab ...
... Objective: Students will gain an understanding of the cellular structure common to all eukaryotic cells but not found in prokaryotic cells. Activity: Complete warm up. Activity: Complete lecture on Activity: Complete remaining parts of the Review eukaryotic cell structures Eukaryotic cells. cell lab ...
2-Morphology-of-bacteria
... With Gram stain bacteria can be divided into two categories; Gram positive bacteria that retain the methyl violet-iodine ...
... With Gram stain bacteria can be divided into two categories; Gram positive bacteria that retain the methyl violet-iodine ...
Gastroenteritis
... • Common intestinal flora of many animals • Contaminated animal products are reservoir • Reptiles, eggs and undercooked poultry ...
... • Common intestinal flora of many animals • Contaminated animal products are reservoir • Reptiles, eggs and undercooked poultry ...
The Nonproteobacteria Gram
... • propionic acid fermenter – Important in swiss cheese production – P. acnes commonly found on human skin; primary cause of bacterial acne ...
... • propionic acid fermenter – Important in swiss cheese production – P. acnes commonly found on human skin; primary cause of bacterial acne ...
Biology 340 Name
... The eubacteria evolved from the more primitive archaeobacteria about 3 billion years ago. Some time later, the eukaryotes diverged from their eubacterial ancestors. The ancestors of the present-day archaeobacteria diverged from other organisms first. Later in time, the ancestors of present-day eubac ...
... The eubacteria evolved from the more primitive archaeobacteria about 3 billion years ago. Some time later, the eukaryotes diverged from their eubacterial ancestors. The ancestors of the present-day archaeobacteria diverged from other organisms first. Later in time, the ancestors of present-day eubac ...
Kingdoms and Domains Section 18-3
... small subunit of ribosomal RNA that occurs in all living things. Three domains: 1. Bacteria 2. Archaea ...
... small subunit of ribosomal RNA that occurs in all living things. Three domains: 1. Bacteria 2. Archaea ...
Organic nutrients
... bacteria cells •Hypertonic: Less solutes in cell than in environment • hypertonic solutions such as concentrated salt and sugar solutions act as preservatives for food(salted ham is an ...
... bacteria cells •Hypertonic: Less solutes in cell than in environment • hypertonic solutions such as concentrated salt and sugar solutions act as preservatives for food(salted ham is an ...
Hospital ecology of bacteria - mims
... • Gram-positive – Easy to kill with disinfectants – Withstands desiccation quite well – can survive for months in the hospital environment. Enterococci can be found almost anywhere ...
... • Gram-positive – Easy to kill with disinfectants – Withstands desiccation quite well – can survive for months in the hospital environment. Enterococci can be found almost anywhere ...
Lecture_1_The role of microbiology_Physiology of microorganism
... is responsible for a disease in humans transmitted through the bite of rats and other rodents (rat-bite fever, ...
... is responsible for a disease in humans transmitted through the bite of rats and other rodents (rat-bite fever, ...
first lecture
... Microbiology studies microorganisms (too small to be seen with the naked eye) – their morphology, physiology, pathogenesis, sensitivity to antimicrobials. ...
... Microbiology studies microorganisms (too small to be seen with the naked eye) – their morphology, physiology, pathogenesis, sensitivity to antimicrobials. ...
presentation source
... chlorophyll is contained here. • Hereditary material (DNA)- Lack a "true" nucleus. DNA is circular. Found in the nucleolid. Plamids are smaller segments of DNA. ...
... chlorophyll is contained here. • Hereditary material (DNA)- Lack a "true" nucleus. DNA is circular. Found in the nucleolid. Plamids are smaller segments of DNA. ...
Practice Exam 2 - Montgomery College
... A) Amphotericin B B) Bacitracin C) Cephalosporin D) Penicillin E) Polymyxin 15) More than half of our antibiotics are A) Produced by fungi. B) Produced by bacteria. C) Synthesized in laboratories. D) Produced by Fleming. E) Produced by eukaryotic organisms. 16) Which of the following antibiotics doe ...
... A) Amphotericin B B) Bacitracin C) Cephalosporin D) Penicillin E) Polymyxin 15) More than half of our antibiotics are A) Produced by fungi. B) Produced by bacteria. C) Synthesized in laboratories. D) Produced by Fleming. E) Produced by eukaryotic organisms. 16) Which of the following antibiotics doe ...
A model of the outer membrane of Gram
... A model of the outer membrane of Gram-negative bacteria J. Andersson,1 S.A. Holt2 and I. Köper,1 1Flinders University, Bedford Park, SA 5042, Australia and 2Australian Nuclear Science and Technology Organisation, New Illawarra Road, Lucas Heights, NSW 2234, Australia. We have developed a rugged and ...
... A model of the outer membrane of Gram-negative bacteria J. Andersson,1 S.A. Holt2 and I. Köper,1 1Flinders University, Bedford Park, SA 5042, Australia and 2Australian Nuclear Science and Technology Organisation, New Illawarra Road, Lucas Heights, NSW 2234, Australia. We have developed a rugged and ...
Experiment 4: Bacteria in the environment
... the wire loops that are used to transfer bacteria between cultures. All glass culture tubes are "flamed" at the lip before and after a sample is removed. Care must be taken to not get hair or skin in contact with any of the culture media both before and following inoculation with bacteria. Always wa ...
... the wire loops that are used to transfer bacteria between cultures. All glass culture tubes are "flamed" at the lip before and after a sample is removed. Care must be taken to not get hair or skin in contact with any of the culture media both before and following inoculation with bacteria. Always wa ...
Bacteria - Dickinson ISD
... warm, dark, and moist conditions •Some can reproduce every 20 minutes (one bacteria could be an ancestor to one million bacteria in six hours) ...
... warm, dark, and moist conditions •Some can reproduce every 20 minutes (one bacteria could be an ancestor to one million bacteria in six hours) ...
Exploring the Normal Flora of the Human Body
... has the potential to make normal cells cancerous. Several types of cancer are known to be caused by viruses (~10% of all cancers). Relationship between viruses and cancer first demonstrated in 1908 (chicken leukemia) Oncoviruses – viruses that transform normal cells into cancerous cells. Tra ...
... has the potential to make normal cells cancerous. Several types of cancer are known to be caused by viruses (~10% of all cancers). Relationship between viruses and cancer first demonstrated in 1908 (chicken leukemia) Oncoviruses – viruses that transform normal cells into cancerous cells. Tra ...
File
... Are more virulent and can cause diseases in a normal person. • Opportunistic pathogens : Are typically members of normal flora and cause diseases when they are introduced into unprotected sites, usually occur in people with underlying conditions. ...
... Are more virulent and can cause diseases in a normal person. • Opportunistic pathogens : Are typically members of normal flora and cause diseases when they are introduced into unprotected sites, usually occur in people with underlying conditions. ...
Family Enterobacteriaceae
... to nitrite, although exceptions exist (e.g. Photorhabdus). Unlike most similar bacteria, Enterobacteriaceae generally lack cytochrome C oxidase, although there are exceptions (e.g. Plesiomonas shigelloides). Most have many flagella used to move about, but a few genera are non-motile. They are non-sp ...
... to nitrite, although exceptions exist (e.g. Photorhabdus). Unlike most similar bacteria, Enterobacteriaceae generally lack cytochrome C oxidase, although there are exceptions (e.g. Plesiomonas shigelloides). Most have many flagella used to move about, but a few genera are non-motile. They are non-sp ...
Hypothesis - can UV produced by intracellular
... known about the mutational effects of UV-A which may induce DNA damage indirectly through radical formation and not at dipyrimidines. In summary, this is an interesting hypothesis, which while it might be unlikely, is not outside the bounds of possibility Nigel J. Jones School of Biological Sciences ...
... known about the mutational effects of UV-A which may induce DNA damage indirectly through radical formation and not at dipyrimidines. In summary, this is an interesting hypothesis, which while it might be unlikely, is not outside the bounds of possibility Nigel J. Jones School of Biological Sciences ...
18.4 Bacteria and Archaea
... – obligate anaerobes are poisoned by oxygen – obligate aerobes need oxygen – facultative aerobes can live with or without oxygen ...
... – obligate anaerobes are poisoned by oxygen – obligate aerobes need oxygen – facultative aerobes can live with or without oxygen ...
Introduction to microbiology - KSU Faculty Member websites
... cell so as to engulf the developing spore the two spores membrane now engage in the active synthesis of special layer that will form the cell envlope the spore wall and the cortex, lying between the facing membrane And the coat and exosporium lying outside the facing membrane properties of endospore ...
... cell so as to engulf the developing spore the two spores membrane now engage in the active synthesis of special layer that will form the cell envlope the spore wall and the cortex, lying between the facing membrane And the coat and exosporium lying outside the facing membrane properties of endospore ...
Bacteria
Bacteria (/bækˈtɪəriə/; singular: bacterium) constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep portions of Earth's crust. Bacteria also live in symbiotic and parasitic relationships with plants and animals. They are also known to have flourished in manned spacecraft.There are typically 40 million bacterial cells in a gram of soil and a million bacterial cells in a millilitre of fresh water. There are approximately 5×1030 bacteria on Earth, forming a biomass which exceeds that of all plants and animals. Bacteria are vital in recycling nutrients, with many of the stages in nutrient cycles dependent on these organisms, such as the fixation of nitrogen from the atmosphere and putrefaction. In the biological communities surrounding hydrothermal vents and cold seeps, bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. On 17 March 2013, researchers reported data that suggested bacterial life forms thrive in the Mariana Trench, which with a depth of up to 11 kilometres is the deepest part of the Earth's oceans. Other researchers reported related studies that microbes thrive inside rocks up to 580 metres below the sea floor under 2.6 kilometres of ocean off the coast of the northwestern United States. According to one of the researchers, ""You can find microbes everywhere — they're extremely adaptable to conditions, and survive wherever they are.""Most bacteria have not been characterized, and only about half of the phyla of bacteria have species that can be grown in the laboratory. The study of bacteria is known as bacteriology, a branch of microbiology.There are approximately ten times as many bacterial cells in the human flora as there are human cells in the body, with the largest number of the human flora being in the gut flora, and a large number on the skin. The vast majority of the bacteria in the body are rendered harmless by the protective effects of the immune system, and some are beneficial. However, several species of bacteria are pathogenic and cause infectious diseases, including cholera, syphilis, anthrax, leprosy, and bubonic plague. The most common fatal bacterial diseases are respiratory infections, with tuberculosis alone killing about 2 million people per year, mostly in sub-Saharan Africa. In developed countries, antibiotics are used to treat bacterial infections and are also used in farming, making antibiotic resistance a growing problem. In industry, bacteria are important in sewage treatment and the breakdown of oil spills, the production of cheese and yogurt through fermentation, and the recovery of gold, palladium, copper and other metals in the mining sector, as well as in biotechnology, and the manufacture of antibiotics and other chemicals.Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea.