1010ExamII
... An insignificant amount of the Earth’s carbon is in Bacteria and Archaea There are way more humans on Earth than Bacteria and/or Archaea Less than 1% of Bacteria and Archaea can be cultured in the laboratory All of the above are true None of the above are true ...
... An insignificant amount of the Earth’s carbon is in Bacteria and Archaea There are way more humans on Earth than Bacteria and/or Archaea Less than 1% of Bacteria and Archaea can be cultured in the laboratory All of the above are true None of the above are true ...
Atypical Interstitial Pneumonia
... entire lung not just the cranial and ventral portions like bronchopneumonia. A virus lives 90% of its life in the cells of animals or humans. The viruses sometimes can’t replicate by themselves, so they steal the DNA or RNA factory from the animal’s cells to replicate. Sometimes the viruses will kil ...
... entire lung not just the cranial and ventral portions like bronchopneumonia. A virus lives 90% of its life in the cells of animals or humans. The viruses sometimes can’t replicate by themselves, so they steal the DNA or RNA factory from the animal’s cells to replicate. Sometimes the viruses will kil ...
Quiz #1 Study Guide, Summer 05
... Know how to calculate CFU/mL from # colonies/plate and the dilution pg. 184 Be prepared to do a dilution problem(s) like those you saw in the homework assignment This is a guide I put together. It is not complete, so you should fill in the spaces with observations you have seen under the brightfield ...
... Know how to calculate CFU/mL from # colonies/plate and the dilution pg. 184 Be prepared to do a dilution problem(s) like those you saw in the homework assignment This is a guide I put together. It is not complete, so you should fill in the spaces with observations you have seen under the brightfield ...
Identification of bacteria by biochemical testing
... longer in the agar to react with the iodine. If starch has not been hydrolyzed, the agar will remain a dark brown or blue/black color. B. PROTEIN HYDROLYSIS DISCUSSION Proteins are made up of various amino acids linked together in long chains by means of peptide bonds. Many bacteria can hydrolyze a ...
... longer in the agar to react with the iodine. If starch has not been hydrolyzed, the agar will remain a dark brown or blue/black color. B. PROTEIN HYDROLYSIS DISCUSSION Proteins are made up of various amino acids linked together in long chains by means of peptide bonds. Many bacteria can hydrolyze a ...
Bacteria and Viruses - Archbishop Ryan High School
... Leeuwenhoek, the invention of the microscope opened our eyes to the hidden, living world around us ...
... Leeuwenhoek, the invention of the microscope opened our eyes to the hidden, living world around us ...
Document
... professional cleaning of the teeth to remove any plaque. • This is particularly important because plaque can harden into a mineral form called calculus or tartar, which can be removed only by professional instruments. • In addition, dental structures that can interfere with plaque removal, such as b ...
... professional cleaning of the teeth to remove any plaque. • This is particularly important because plaque can harden into a mineral form called calculus or tartar, which can be removed only by professional instruments. • In addition, dental structures that can interfere with plaque removal, such as b ...
userfiles/153/my files/27_lecture_presentation?id=3209
... • -Extreme thermophiles thrive in very hot environments • Methanogens live in swamps and marshes and produce methane as a waste product • Methanogens are strict anaerobes and are poisoned ...
... • -Extreme thermophiles thrive in very hot environments • Methanogens live in swamps and marshes and produce methane as a waste product • Methanogens are strict anaerobes and are poisoned ...
6A - UAB School of Optometry
... slide for 60 seconds. Rinse slide with water. 2. Flood slide with iodine solution (serves as a mordant by increasing the affinity of the dye for the bacterial cell) and allow to remain for one minute. Rinse slide with water. 3. Rinse slide with 95% alcohol (washes away the non-adherent to cell wall ...
... slide for 60 seconds. Rinse slide with water. 2. Flood slide with iodine solution (serves as a mordant by increasing the affinity of the dye for the bacterial cell) and allow to remain for one minute. Rinse slide with water. 3. Rinse slide with 95% alcohol (washes away the non-adherent to cell wall ...
bacterial investigations lab
... A. The World of Prokaryotes 1. They’re (almost) everywhere! An overview of prokaryotic life Prokaryotes were the earliest organisms on Earth and evolved alone for 1.5 billion years. Today, prokaryotes still dominate the biosphere. Their collective biomass outweighs all eukaryotes combined by a ...
... A. The World of Prokaryotes 1. They’re (almost) everywhere! An overview of prokaryotic life Prokaryotes were the earliest organisms on Earth and evolved alone for 1.5 billion years. Today, prokaryotes still dominate the biosphere. Their collective biomass outweighs all eukaryotes combined by a ...
Phenylalanine Deamination
... peroxide directly onto colonies growing on a plate. However, colonies growing on blood agar should not be tested in this way because blood cells contain catalase and would cause a false positive reaction. Staphylococcus, Micrococcus and most aerobic organisms produce catalase, while Streptococcus an ...
... peroxide directly onto colonies growing on a plate. However, colonies growing on blood agar should not be tested in this way because blood cells contain catalase and would cause a false positive reaction. Staphylococcus, Micrococcus and most aerobic organisms produce catalase, while Streptococcus an ...
Dairy Microbiology Key Terms Mastitis Somatic Cells
... survive under adverse conditions. o When conditions become unfavorable (e.g., lack of nutrients), vegetative growth (“multiplication”) stops and “spores” begin to form within the cell. o During sporulation a thick coating develops and encases the cell’s genetic material. Spores forming inside a cell ...
... survive under adverse conditions. o When conditions become unfavorable (e.g., lack of nutrients), vegetative growth (“multiplication”) stops and “spores” begin to form within the cell. o During sporulation a thick coating develops and encases the cell’s genetic material. Spores forming inside a cell ...
resistance.activity.pdf
... different kingdoms of Bacteria. Thinking this way, we readily see that bacteria are too diverse for any one drug to kill them all. Some antibiotics come close, though. These are called “widespectrum” antibiotics. Other kinds of antibiotics are fairly specific in the type of bacteria against which th ...
... different kingdoms of Bacteria. Thinking this way, we readily see that bacteria are too diverse for any one drug to kill them all. Some antibiotics come close, though. These are called “widespectrum” antibiotics. Other kinds of antibiotics are fairly specific in the type of bacteria against which th ...
Nitrogen cycle
... Organic nitrogen compounds Nitrogen-containing compounds are important in plants. Examples are proteins (including enzymes), nucleotides (e.g. ATP) and nucleic acids (e.g. DNA and RNA). The process of decay of dead remains is also known as putrefaction. Decay, or putrefying, bacteria and fungi break ...
... Organic nitrogen compounds Nitrogen-containing compounds are important in plants. Examples are proteins (including enzymes), nucleotides (e.g. ATP) and nucleic acids (e.g. DNA and RNA). The process of decay of dead remains is also known as putrefaction. Decay, or putrefying, bacteria and fungi break ...
Prescription for the Future
... to each of these antibiotics have been identified. It takes millions of dollars and many years to develop a new antibiotic. Few new drugs are under development because bacteria can render an antibiotic useless with a single shuffle of the genetic deck. The day may be rapidly approaching when even th ...
... to each of these antibiotics have been identified. It takes millions of dollars and many years to develop a new antibiotic. Few new drugs are under development because bacteria can render an antibiotic useless with a single shuffle of the genetic deck. The day may be rapidly approaching when even th ...
Proteus Vulgaris
... With this result, the organism isolated could be either Streptococcus lactis or Staphylococcus epidermidis. The negative results of the Catalase test differentiate between Streptococcus lactis and Staphylococcus epidermidis. The Catalase test is used to determine the presence of catalase, which brea ...
... With this result, the organism isolated could be either Streptococcus lactis or Staphylococcus epidermidis. The negative results of the Catalase test differentiate between Streptococcus lactis and Staphylococcus epidermidis. The Catalase test is used to determine the presence of catalase, which brea ...
Responsible Use of Antibiotics in Endodontics
... to each of these antibiotics have been identified. It takes millions of dollars and many years to develop a new antibiotic. Few new drugs are under development because bacteria can render an antibiotic useless with a single shuffle of the genetic deck. The day may be rapidly approaching when even th ...
... to each of these antibiotics have been identified. It takes millions of dollars and many years to develop a new antibiotic. Few new drugs are under development because bacteria can render an antibiotic useless with a single shuffle of the genetic deck. The day may be rapidly approaching when even th ...
Biology 1290B: An introduction to general microbiology. 1. Microbes
... (Viruses are not cellular and most biologists consider them to be biological entities of course, but as not being alive in the generally accepted sense of the word. Do not make the common mistake of thinking of viruses as being cells, they are not! ) Prokaryotic cells do NOT have a discrete membrane ...
... (Viruses are not cellular and most biologists consider them to be biological entities of course, but as not being alive in the generally accepted sense of the word. Do not make the common mistake of thinking of viruses as being cells, they are not! ) Prokaryotic cells do NOT have a discrete membrane ...
Phylogeny of Bacteria, Archaea, and Eukaryotic
... Manual of Systematic Bacteriology divides domain Bacteria into over two dozen phyla, based on cladistic taxonomy. Some of the more notable phyla are described here. Phylum Aquiflexa The earliest “deepest” branch of the Bacteria Contains genera Aquiflex and Hydrogenobacter that can ...
... Manual of Systematic Bacteriology divides domain Bacteria into over two dozen phyla, based on cladistic taxonomy. Some of the more notable phyla are described here. Phylum Aquiflexa The earliest “deepest” branch of the Bacteria Contains genera Aquiflex and Hydrogenobacter that can ...
THE GENUS CLOSTRIDUM
... bacterium to host interaction through which compounds can be exchanged. This transfer can include not only the nutrients and supplementary amino acids, etc. that is necessary for the support of bacterial growth, but also toxic metabolic compounds. ...
... bacterium to host interaction through which compounds can be exchanged. This transfer can include not only the nutrients and supplementary amino acids, etc. that is necessary for the support of bacterial growth, but also toxic metabolic compounds. ...
The Gram Positive Bacteria
... Aerosol (not via insect bite therefore no longer classified with the rickettsia) Can produce an endospore-like structure able to withstand extreme environmental conditions ...
... Aerosol (not via insect bite therefore no longer classified with the rickettsia) Can produce an endospore-like structure able to withstand extreme environmental conditions ...
Professor Diane Hilker
... Gram Stain: also see size, shape & arrangement ◦ Differential stain: stain pink/red or blue/purple ◦ 4 Reagents: Primary Stain-crystal violet Mordant-iodine Decolorizer-ethanol Counterstain-safranin (red) ◦ Results: Gram + bacteria: blue/purple Gram – bacteria: pink ◦ Why? Cell wall composition (PG) ...
... Gram Stain: also see size, shape & arrangement ◦ Differential stain: stain pink/red or blue/purple ◦ 4 Reagents: Primary Stain-crystal violet Mordant-iodine Decolorizer-ethanol Counterstain-safranin (red) ◦ Results: Gram + bacteria: blue/purple Gram – bacteria: pink ◦ Why? Cell wall composition (PG) ...
1-024_prelimt - 2P219lsseportfolio
... Allicin has anti-bacterial and anti-fungus properties. Garlic generate allicin using enzymes when it is injured to protect itself from fungus and insects. In garlic, an enzyme called alliinase, which is stored in a separate compartment in garlic, combines with a compound called alliin to produce all ...
... Allicin has anti-bacterial and anti-fungus properties. Garlic generate allicin using enzymes when it is injured to protect itself from fungus and insects. In garlic, an enzyme called alliinase, which is stored in a separate compartment in garlic, combines with a compound called alliin to produce all ...
Biofilm Centre
... the beginning of the Paleoproterozoic era, about 2.4 billion years ago. It is also called the Oxygen Crisis, Oxygen Revolution or The Great Oxidation. ¾ When evolving life forms developed oxyphotosynthesis about 2.7 billion years ago, molecular oxygen was produced in large quantities. This eventuall ...
... the beginning of the Paleoproterozoic era, about 2.4 billion years ago. It is also called the Oxygen Crisis, Oxygen Revolution or The Great Oxidation. ¾ When evolving life forms developed oxyphotosynthesis about 2.7 billion years ago, molecular oxygen was produced in large quantities. This eventuall ...
Microflora of the Gastrointestinal Tract
... In healthy human beings, the intestinal epithelial surface is covered by a layer of mucus, comprised mainly of mucin (mucus glycoprotein). Mucus glycoproteins are synthesized and secreted from the salivary glands, esophagus, stomach, small and large intestine, gallbladder, and pancreatic ducts. The ...
... In healthy human beings, the intestinal epithelial surface is covered by a layer of mucus, comprised mainly of mucin (mucus glycoprotein). Mucus glycoproteins are synthesized and secreted from the salivary glands, esophagus, stomach, small and large intestine, gallbladder, and pancreatic ducts. The ...
Spore Forming and Non-Spore Forming Gram
... Survival Classification Definition = a resting cell, highly resistant to dessication, heat, and chemical agents; when returned to favourable conditions bacteria re-activated, the spores germinate to produce single vegetative cells. ...
... Survival Classification Definition = a resting cell, highly resistant to dessication, heat, and chemical agents; when returned to favourable conditions bacteria re-activated, the spores germinate to produce single vegetative cells. ...
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.