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Is Life Thriving Deep Beneath the Seafloor?
Is Life Thriving Deep Beneath the Seafloor?

... for the right conditions to “awaken” its genetic machinery and resume growing and reproducing, the researchers said. In the Arctic and Antarctic, scientists have found metabolically active microbes in subsurface permafrost frozen at temperatures of –10°C (14°F) or colder for 2 million to 3 million y ...
Kingdom Monera Ch
Kingdom Monera Ch

...  This is a universal method of _______________ called Gram Staining.  This is a staining method developed by a Danish physicist named Hans Christian Gram.  It classifies bacteria by how they react to the stain.  Bacteria are divided into 2 categories: – Gram positive bacteria – Gram negative bac ...
Staining for Differences
Staining for Differences

... Some bacteria form hardy structures known as endospores. An endospore is a dormant cell that is highly resistant to heat (including boiling) drying out, nutrient depletion, and physical damage. 4. Click on the images titled “Botulism bacteria (malachite stain)” and “Botulism bacteria (Gram stain).” ...
Bacterial Kingdoms semi notes
Bacterial Kingdoms semi notes

...  This is a universal method of _______________ called Gram Staining.  This is a staining method developed by a Danish physicist named Hans Christian Gram.  It classifies bacteria by how they react to the stain.  Bacteria are divided into 2 categories: – Gram positive bacteria – Gram negative bac ...
Stereoselective Synthesis of Peptidoglycan Fragments On Solid
Stereoselective Synthesis of Peptidoglycan Fragments On Solid

... Centre for protein Engineering (ULg), Belgium ...
A2_Examples of Evolution
A2_Examples of Evolution

... time is the time it takes to go from one generation to the next. For example, in humans, it takes on average about 20 years to go from the birth of a child to the birth of that child’s child. Therefore, the generation time for humans is approximately 20 years. Contrast this with the average bacteria ...
The Nitrogen Cycle
The Nitrogen Cycle

... 2. Biological fixation: bacteria in the roots of legumes fix nitrogen. 3. Atmospheric fixation: lightning converts N2 to NO3- & NH4+. 4. Industrial fixation: factories make fertilizer from atmospheric nitrogen. Why is nitrogen important? Nitrogen is necessary for all life on earth as it is a key ele ...
Evolution of gram-negative bacteria: a view from lipid A biosynthesis
Evolution of gram-negative bacteria: a view from lipid A biosynthesis

... we examined. lpxH gene, which encodes pyrophosphatase, appeared to have arisen from a duplication of lpxH2 gene after beta/gammaproteobacteria were diverged from other proteobacteria. lpxH2 gene encodes phosphatase , and is not involved with lipid-A biosynthesis. Thus this new gene creation was foll ...
The Nitrogen Cycle - hrsbstaff.ednet.ns.ca
The Nitrogen Cycle - hrsbstaff.ednet.ns.ca

... • N is needed for life’s DNA, protein, amino and nucleic acids • Plants use nitrogen (N), phosphorus (P) and potassium (K) for growth. • Earth’s atmosphere is 70% nitrogen gas (N2). • Nitrogen gas is a form that very few organisms can use (they can’t absorb it directly). ...
Culture of the obligate anaerobes
Culture of the obligate anaerobes

... Water contains soluble O2, which must be removed when a broth is intended to be used for culturing anaerobic bacteria. It is possible to remove soluble from water by using a reducing chemical agent that reduces O2 to H2O such as Sodium Thioglycolate . Example: Thioglycolate broth. ...
acid-fast endospore and capsule stain
acid-fast endospore and capsule stain

... radiation.“ Common anti-bacterial agents that work by destroying vegetative cell walls do not affect endospores. • Endospores are commonly found in soil and water, where they may survive for long periods of time ...
Monera Kingdom - Fulton County Schools
Monera Kingdom - Fulton County Schools

... years ago by an impact with an asteroid and travelled through space to the earth, where it landed on Antarctica about 13,000 years ago. Some scientists believe that the rod-shaped structures across the top and center of this image may be tiny fossilized bacteria. Many other scientists believe that t ...
Bacteria - Brookwood High School
Bacteria - Brookwood High School

... • ex: streptococcus, Escherichia coli, anabaena ...
Microbes Flash cards
Microbes Flash cards

... Break down of organic matter containing carbohydrates and fats; Microbes respire / excrete CO2 into the atmosphere to be used by plants: photosynthesis ...
Unit 6: Classification and Diversity
Unit 6: Classification and Diversity

... Domain Bacteria  Eubacteria are prokaryotes whose cell walls contain peptidoglycan.  Eubacteria are a diverse group that can survive in many different environments. Domain Archaea  Archaea are thought to be more ancient than bacteria and yet more closely related to our eukaryote ancestors.  Arch ...
Review for Bio 6 Quiz 1
Review for Bio 6 Quiz 1

... differential medium. Know whether each of the different media we used were selective, differential or both. Don't forget that media is used to grow organisms and that all of these tests tell us something about some aspect of metabolism. The catalase and oxidase tests are not growth media because the ...
prokaryotic and eukaryotic cells
prokaryotic and eukaryotic cells

... types, and they are very different from each other in their shapes and functions. The diagram on the previous page shows examples of different types of cells in the human body. Not all organisms are complex. Some are very simple. In fact, some organisms are made up of only one cell. Take a look at t ...
Chapter 4 VIRUS, BACTERIA AND CYANOBACTERIA
Chapter 4 VIRUS, BACTERIA AND CYANOBACTERIA

... Russian biologist, Iwanowsky showed that this disease was due to some thing smaller than bacteria. He named them as viruses. No one had seen them because they were too small to be seen even with the compound microscope. The year 1935 was important in solving the story of what viruses really are and ...
Page 45 - Educast
Page 45 - Educast

... 1892, Russian biologist, Iwanowsky showed that this disease was due to some thing smaller than bacteria. He named them as viruses. No one had seen them because they were too small to be seen even with the compound microscope. The year 1935 was important in solving the story of what viruses really ar ...
Chapter 27 Prokaryotes
Chapter 27 Prokaryotes

... • The major bacterial taxa are now accorded kingdom status by most prokaryotic systematists ...
Chapter 6
Chapter 6

...  Sources of carbon, energy, and electrons ○ Two groups of organisms based on source of carbon  Autotrophs  Heterotrophs ...
Nitrogen Cycle in Aquaponics
Nitrogen Cycle in Aquaponics

... Nitrogen cycle and Aquaponics • The Nitrogen cycle is the most significant process within aquaponics. It is responsible for the conversion of fish waste into nutrients for the plants. • Without this process, the water quality would deteriorate rapidly and become toxic to both the fish and plants in ...
Laboratory 6- Acid Fast Stain
Laboratory 6- Acid Fast Stain

... hostile environments. Affects staining, a barrier to most dyes. Since they are difficult to destain, even with acid, they are called acid fast. The Acid fast stain procedure: ~ prepare an air dried, heat fixed smears of the bacterial culture Step 1: primary stain, carbolfuchsin ...
Characterization of Bacteria Responsible for Background Anomalies
Characterization of Bacteria Responsible for Background Anomalies

... Common Features of Atypical Bacteria on mFC Produce higher pH (up to 8.5) in the mFC Agar  Agar turns transparent yellow  Aerobic  Non-fermentative  Not inhibited by rosolic acid ...
Section 1 Prokaryotes Chapter 23 Domain Bacteria
Section 1 Prokaryotes Chapter 23 Domain Bacteria

... 1. Methanogens convert hydrogen gas and carbon dioxide into methane. They can be found in the intestines of organisms such as cattle and termites. ...
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Unique properties of hyperthermophilic archaea

This article discusses the Unique properties of hyperthermophilic archea. Hyperthermophiles are organisms that can live at temperatures ranging between 70 and 125 °C. They have been the subject of intense study since their discovery in 1977 in the Galapagos Rift. It was thought impossible for life to exist at temperatures as great as 100 °C until Pyrolobus fumarii was discovered in 1997. P. fumarii is an unicellular organism from the domain Archaea living in the hydrothermal vents in black smokers along the Mid-Atlantic Ridge. These organisms can live at 106 °C at a pH of 5.5. In order to get energy from their environment these organisms are facultatively aerobic obligate chemolithoautotrophs, meaning these organisms build biomolecules by harvesting carbon dioxide (CO2) from their environment by using hydrogen (H2) as the primary electron donor and nitrate (NO3−) as the primary electron acceptor. These organisms can even survive the autoclave, which is a machine designed to kill organisms through high temperature and pressure. Because hyperthermophiles live in such hot environments, they need to have DNA, membrane and enzyme modifications in order to withstand the intense thermal energy. Such modifications are currently being studied to better understand what allows an organism or protein to survive such harsh conditions. By learning what allows these organisms to survive such harsh conditions, researchers will be better able to synthesize molecules that are harder to denature that can be used in industry.
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