Bacteria

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What is Micro Bacteria?
December 8, 2018

What is Micro Bacteria?

Any part of the human body that is open to the outside world it available for the colonisation of bacteria. While this blog has covered bacteria in the and the throat, one area I ve neglected to cover is the bacteria that get into the lungs. As the company I currently work for is involved in respiratory research I was rather excited to find a PLoS One paper that…

Protein Capsule Bacteria
December 5, 2018

Protein Capsule Bacteria

To search the entire book, enter a term or phrase in the form below Custom Search Bacterial Defense against Phagocytosis © Kenneth Todar, PhD Introduction Some pathogenic bacteria are inherently able to resist the bactericidal components of host tissues, usually as a function of some structural property. For example, the poly-D-glutamate capsule of Bacillus anthracis…

Prokaryote Bacteria cells
November 26, 2018

Prokaryote Bacteria cells

Bacterial cells are fundamentally different to the cells of multicellular animals such as humans. They are far smaller, with less internal organisation and no nucleus (they have DNA but it is not packaged safely within a membrane). Because of this bacteria are almost exclusively single-celled organisms, with their own autonomy and often mobility. Of course many…

Main Features of Bacteria
November 20, 2018

Main Features of Bacteria

Bacteria are mostly unicellular organisms that lack and are among the smallest living things on earth—only viruses are smaller. Multiplying rapidly under favorable conditions, bacteria can aggregate into colonies of millions or even billions of organisms within a as small as a drop of . The Dutch merchant and amateur scientist Anton van Leeuwenhoek was the first…

Bacteria and its Parts
October 6, 2018

Bacteria and its Parts

These are three bacterial motors with different torque (units of torque are piconewton nanmometres, pN nm). Credit: Morgan Beeby/Imperial College London Many bacteria swim using flagella - long tails that are attached to tiny motors made of proteins, just tens of nanometres wide. These motors spin the flagella, which work as nanoscale propellers to drive the…

Which Bacteria have Capsule?
August 29, 2018

Which Bacteria have Capsule?

Microorganisms sense and adapt to changes in their environment. When favored nutrients are exhausted, some bacteria may become motile to seek out nutrients, or they may produce enzymes to exploit alternative resources. One example of an extreme survival strategy employed by certain low G+C Gram-positive bacteria is the formation of endospores. This complex developmental…

Key Features of Bacteria
August 11, 2018

Key Features of Bacteria

Bacteria are a subset of prokaryotes and while very different, they still have some common features. Learning Objective Identify common bacterial traits Key Points Bacteria vary from species to species, thus assigning many common traits to bacteria is difficult. Bacterial species are typified by their diversity. Not all prokaryotes are bacteria, some are archaea…

Are All Bacteria Microscopic
August 8, 2018

Are All Bacteria Microscopic

It is possible to use non-toxic stains (such as ink for fountain pens) to stain yogurt bacteria in-vivo. Can one see bacteria using a compound microscope? The answer is a careful “yes, but”. Generally speaking, it is theoretically and practically possible to see living and unstained bacteria with compound light microscopes, including those microscopes which are…

Are fungi Bacteria
July 21, 2018

Are fungi Bacteria

Credit: TheAlphaWolf Wikimedia (CC BY-SA 3.0) Getting around in dirt is not easy for bacteria. Those that can move rely on water in which to swim, but soil is full of air pockets and dry particles (boulders, no doubt, to bacteria) that block progress. New research indicates, however, that the filaments of fungi may act as highways that enable soil bacteria to…

Bacteria Groups
July 12, 2018

Bacteria Groups

Abstract: From biofilm and colony formation in bacteria to wound healing and embryonic development in multicellular organisms, groups of living cells must often move collectively. While considerable study has probed the biophysical mechanisms of how eukaryotic cells generate forces during migration, little such study has been devoted to bacteria, in particular…

Biosafety Level 2 Bacteria List
July 9, 2018

Biosafety Level 2 Bacteria List

Biological Agents, Work Practices, Safety Equipment, and Facility Design Specific to Each A very specialized research laboratory that deals with infectious agents is the biosafety lab. Whether performing research or production activities, when working with infectious materials, organisms or perhaps even laboratory animals, the proper degree of protection is of…

What is soil Bacteria?
July 6, 2018

What is soil Bacteria?

Soil bacteria and soil fungi are the start of the soil food web that supports other soil organisms and the functions of a healthy soil. Diverse populations of soil bacteria and fungi can suppress root diseases. Soil bacteria and fungi are encouraged by ground cover and organic matter inputs. Populations of soil bacteria change rapidly depending on moisture, time…

Where is DNA located in Bacteria?
April 16, 2018

Where is DNA located in Bacteria?

From the tiniest bug, to the tallest oak tree, and largest mammal, DNA certainly gets around. What is so incredible about this molecule is its similarity in structure and composition in all living things. This article takes a peek inside cells to find out where DNA is found. Human Cells Nucleus DNA can be found inside the nucleus of every cell, apart from red…

Similarity Between Bacteria and fungi
March 17, 2018

Similarity Between Bacteria and fungi

In order to survive, organisms produce small molecules known as primary metabolites which help it to grow, develop and reproduce. Examples include nucleic acid used to make DNA, amino acids to make proteins, and simple sugars. Once the organism is established it will often start to produce secondary metabolites . Secondary metabolites are not vital for survival…

Mitochondria in Bacteria
February 12, 2018

Mitochondria in Bacteria

About 1.5 billion years ago, primitive bacteria took residence inside larger cells, resulting in an intimate relationship that would mold the evolution of more complex, multicellular beings. The bigger cell was eukaryotic, meaning it contained organelles - structures surrounded by membranes, but the prokaryotic bacterial cell had no such arrangement. The bigger…

Fungus is a Bacteria
February 9, 2018

Fungus is a Bacteria

Bacteria and fungi occur in all environments. In humans, these lifeforms can be harmless passengers, participate in beneficial biological processes, or cause disease. Bacterial and fungal infections affect people of all ages and range from minor to potentially life-threatening. Bacteria and fungi have similarities and differences that influence their disease-causing…

Does Bacteria have Cytoplasm
December 10, 2017

Does Bacteria have Cytoplasm

The structures of two prokaryotic cells. The bacterium (shown at the top) is a heterotroph , an organism that eats other organisms. Cyanophytes are autotrophs , organisms that make their food without eating other organisms. Most of these prokaryotic cells are small, ranging from 1 to 10 microns with a diameter no greater than 1 micron. The major differences between…

What are the Features of Bacteria?
November 16, 2017

What are the Features of Bacteria?

Mosquitoes kill an estimated 700 people a year. If infected with viruses that cause diseases like chikungunya, dengue and Zika, mosquitos can transmit them to humans in one bite. Researchers have now pilot-deployed a new technique to control diseases transmitted by mosquitoes by making use of nature. It is one of the new tools WHO recommends for pilot deployment…

Purpose of cell wall in Bacteria
October 23, 2017

Purpose of cell wall in Bacteria

Andre G, Leenhouts K, Hols P and Dufrene YF (2008) Detection and localization of single LysM‐peptidoglycan interactions. Journal of Bacteriology 190: 7079–7086. Barak I, Muchova K, Wilkinson AJ, O Toole PJ and Pavlendova N (2008) Lipid spirals in Bacillus subtilis and their role in cell division. Molecular Microbiology 68: 1315–1327. Bardy SL and Maddock JR (2007)…

Characteristics of Bacteria cell
October 14, 2017

Characteristics of Bacteria cell

Citation data is made available by participants in CrossRef s Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search inSciFinder. Anna Mette Hansen, Gitte Bonke, Camilla Josephine Larsen, Niloofar Yavari, Peter E. Nielsen, and Henrik Franzyk Bioconjugate Chemistry 2016 27 (4), 863-867 Xiao-Wan…

Bacteria and fungi Similarity
October 8, 2017

Bacteria and fungi Similarity

There exists very little similarity between Bacteria and Fungi as a whole. For starters, Bacteria are prokaryotes without any defined nuclei. Fungi are Eukaryotes, having a defined cellular nucleus, with the genomic DNA bound by a defined nuclear membrane. The modes of cellular metabolism are vastly different and so is the mode of reproduction. Very few fungi…

Information on Bacteria
September 17, 2017

Information on Bacteria

In the future, it will be possible to carry out tests of new drugs on bacteria much more efficiently using microfluidic devices, since each of the hundreds and thousands of droplets moving through the microchannels can act as separate incubators. So far, however, there has been no quick or accurate method of assessing the oxygen conditions in individual microdroplets…

Nucleus of Bacteria
May 23, 2017

Nucleus of Bacteria

A unique feature of eukaryotic cells, which distinguishes them from bacteria, is the presence of a membrane-bound nucleus that contains the chromosomal DNA (illustrated; image credit). Surprisingly, a nucleus-like structure that forms during viral infection of bacteria is the site of viral DNA replication (link to paper). During infection of Pseudomonas bacteria…

Bacteria Diagram Labeled
September 6, 2016

Bacteria Diagram Labeled

Site author Richard Steane The BioTopics website gives access to interactive resource material, developed to support the learning and teaching of Biology at a variety of levels. The Structure of bacterial cells Use the mouse to label these diagrams of a bacterial cell. Labels should include the following - but also read the notes which follow. single chromosome…

Bacteria cells Have a Nucleus
December 25, 2014

Bacteria cells Have a Nucleus

Photo by: icholakov Hundreds of thousands of bacterial species exist on Earth. They can be found in very diverse environments ranging from cold to hot and alkaline to acid. They live in soil, in water, and on rocks. They exist deep in the earth, high on mountains, and in deep-sea vents. They grow on and in other bacteria, worms, insects, plants, animals, and…

Does Bacteria have a Protein Coat
January 11, 2017

Does Bacteria have a Protein Coat

EMBL discovery could yield evolutionary insights and new model organism This electron microscopy image shows Gemmata obscuriglobus . This and other PVC bacteria, the EMBL scientists discovered, have membrane-coat proteins associated with the membranes of subcellular compartments like the one shown in green, in which vesicles can be seen as dark green regions…

Microscopic Bacteria
June 9, 2017

Microscopic Bacteria

The chaotic movements of bacteria could be tamed to create electricity, powering miniature future gadgets, such as medical devices or other nanoscale machines. A newly published paper from researchers at Oxford University explains how to turn a fluid soup of bacteria into a kind of miniature wind farm. The team dropped a minuscule array of 64 rotors into a microfluid…

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