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Örverufræði/Microbiology

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Society for General Microbiology | About Microbiology. Micro-organisms affect every aspect of life on Earth. Some microbes cause disease but the majority are completely harmless. These minute life forms are essential to the cycling of nutrients in the eco-systems of the planet. We need to understand the role of microbes in global terms, but there are many aspects of our daily lives where knowledge of microbiology can help us answer everyday questions such as How can I avoid flu? Should I have the HPV vaccine? And even... What happens to my poo when I go to the loo? Biotechnology, which often uses microbes or their products, is a fast-growing area of science. Since microbes are of such biological, economic and social significance, it is important that microbiology is a part of everyone’s education.

Download the climate change fact file from our Resources page Introducing Microbes Micro-organisms can be friend or foe but most importantly, we all need them to live! About microbes Microbe passports About microbe passports Microbes and food More information. The Science of Composting - Composting for the Homeowner. Enterobacteriaceae, Vibrio, Campylobacter and Helicobacter. MicrobeLibrary: premier visual resources and protocols used in teaching microbiological and biological sciences. MPN Calculator. DIY Experiments for home, school or science fair projects. This section contains a range of experiments that you can try out in the comfort of your own kitchen or school classroom. They all use easy to get hold of items, but some can be a bit dangerous if you don't take care. Please get a responsible person to help if you're unsure and be careful with anything involving fire. Explanations to why the experiments work are included on all the pages but I haven't gone into detail about controls, variables and experimental plans.

If you want to just have a bit of fun then you can use the experiments as they are. But if you are doing them at school or for a science fair project, you will need to have a read of the section below so that you think about things like controls and variables before you carry out the experiment. Doing an experiment - The Scientific Method The plan: Every experiment needs an aim - this is important because it tells us what we want to find out. Variables: Can you work out what the variables are in your experiment? Scirus - for scientific information. DSMZ - the German Resource Centre for Biological Material.

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Tímarit. Taxonomy of Bacteria and Archaea. National Center for Biotechnology Information. Hexavalent chromium reduction and 16S rDNA identification of bacteria isolated from a Cr (VI) contaminated site. Four strains used in this study were originally isolated by Mr. A.P. Das sukind chromite mines, jajpur, India. Bacterial strains, resistant to Cr (VI), were isolated from the soil using the serial dilution technique in PYE medium (Peptone, Yeast extract). Agar supplemented with 100g Cr (VI)/ml as K 2 Cr 2 O 7 and 0.5% (wt/vol) dextrose served as carbon source. Chromate-reducing activity was estimated as the decrease in chromate concentration in supernatant with time using the Cr(VI)-specific colorimetric reagent 1,5-diphenylcarbazide (DPC), prepared in acetone/H2SO4 to minimize deterioration (Urone 1955) as follows: DPC (0.025 g) was dissolved in 9.67 ml acetone (AR) and 330 μl of 3 M H2SO4 was added.

Gram staining of bacterial strain was carried out using established methods (Collins and Patricia 1984). Strain was grown aerobically in PYE at 30°C overnight. Strain APD15 (deposited in the National Center for Biotechnology Information ( NCBI ) Genbank; accession no. Cappuccino, J. Overview of membrane associated uptake, efflux, reduction and oxidation of metal ions. The complexity of several examples of some families (such as CopA/B and CadA P-type ATPases and three component chemiosmotic RND systems (CzcCBA and SilCBA) preclude a.

UW-Madison Dept. of Bacteriology, Madison, WI. Online Textbook of Bacteriology. Bacterial secretion system - Reference pathway (KO) Fatty Acids -- Complete beta-oxidation of palmitoyl CoA. 19-9. Diversity index. A diversity index is a quantitative measure that reflects how many different types (such as species) there are in a dataset, and simultaneously takes into account how evenly the basic entities (such as individuals) are distributed among those types. The value of a diversity index increases both when the number of types increases and when evenness increases. For a given number of types, the value of a diversity index is maximized when all types are equally abundant. True diversity (The effective number of types)[edit] True diversity, or the effective number of types, refers to the number of equally-abundant types needed for the average proportional abundance of the types to equal that observed in the dataset of interest (where all types may not be equally abundant).

The true diversity in a dataset is calculated by first taking the weighted generalized mean of the proportional abundances of the types in the dataset, and then taking the inverse of this. The equation is:[3][4] . Where. PubMed Central Image Viewer. Welcome to Microbial Life, Second Edition.