Gram Negative Bacteria

Gram negative bacteria

Gram negative bacteria is another type of bacteria. It does not retain the crystal violet stain used in the Gram staining method. The thin peptidoglycan layer of their cell wall is sandwiched between an inner cell membrane and bacterial outer membrane. The process of Gram staining is used in the same manner as with gram positive bacteria. The only difference is that gram negative bacteria will turn red or pink. Characteristics of gram negative bacteria. Gram negative bacteria display he following characteristics: Cell membrane. Thin…

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Gram Positive Bacteria

Gram Positive Bacteria

Gram positive bacteria are a class of bacteria. They can be identified by their crystal violet stain. This happens when they are subjected to the Gram staining method. It is a method where bacteria is identified. They can either be gram positive or gram negative. The thick peptidoglyan layer in the cell wall retains the stain. This make it possible for definitive identification. Gram negative bacteria cannot retain the violet stain after decolorization. Gram positive bacteria are more receptive to antibiotics. This happens even though…

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Flesh Eating Bacteria

Flesh Eating Bacteria

Flesh eating bacteria isn’t a joke. It does exist. People tend to believe it’s a movie or video game story. Actually, it is pretty dangerous. The only flesh eating bacteria that exist, is called necrotizing fasciitis. It is a rare infection of the deeper layers of the skin and subcutaneous tissues. The bacteria can spread quite easily through the fascial plane within the subcutaneous tissue. A most consistent feature of this flesh eating bacteria was first described in 1952. It was described as necrosis of…

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Types of protozoa

Types of protozoa

There are various types of protozoa that people hardly know about. What are their purpose? What do they actually do? Look at our protozoa taxonomy, protozoa structure and our protozoa explanation to learn more. Types of protozoa: Protozoa are classified according to the ways in which they move about. One phylum (the Sarcodina), moves by pushing out portions of their cytoplasm forming pseudopods (“false feet”) in order to propel them forward. They capture their food by extending their pseudopods around it, engulfing it, and digesting…

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Bacteria vs Virus

Bacteria vs Virus

Bacteria vs virus is a mix characteristics and differences. Each virus is different from each bacteria. What do we know about the differences? How can we explain it? It’s simple. All of the differences of bacteria vs virus will be explained. Definitions Bacteria Virus Bacteria are unicellular organisms. They are typically a few micrometers long. The differences in shapes vary greatly and they include curved rods, spheres, rods and spirals. A virus is a sub-microscopic particle. They can infect the host of a biological organism.…

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Evolution of fungi

Evolution of fungi

Why the evolution of fungi? The evolution of fungi has been researched for decades. Just like animals and plants, we have studied their evolutionary path through genetic analysis. The evolution of fungi. The evolution of fungi has been going on since fungi diverged from other life around 1,500 million years ago. The glomaleans branched out from the “higher fungi” at ~570 million years ago. This is based on DNA analysis. Fungi most-likely colonised the land during the Cambrian era. From today, that’s over 500 million…

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Virus Evolution

Virus Evolution

Viruses are ancient. Probably the same as bacteria but we hardly know where they come from.  Virus evolution is also defined as virology. A subfield of biology where people actually study their origins. Where do viruses come from? This is a question everyone probably asked at some point. Tracking virus evolution and origins is like searching for a needle in a hay stack. They don’t leave fossils because they are smaller than a grain of sand. Virus Evolution. The genomes of many organisms contain endogenous…

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Types of bacteria

Types of bacteria

There are many different types of bacteria. They can be classified according to their physical characteristics. Even by how they interact with the environment and other living things. The most important difference between the types of bacteria is whether it’s beneficial or not. Types of bacteria: Type. Explanation. Beneficial bacteria. Most individuals don’t want to come into contact with any form of bacteria due to fear. People have always been scared of deadly diseases. Some types are indeed helpful to your health. It’s not that…

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Virus Genome

Virus genome

A virus genome is just like every other genome. It contains all the genes necessary to replicate a virus. There is one problem though. Viruses are actually lazy and they rely on the host cell’s machinery to make what they need to replicate. Viruses encode a minimum of 2 proteins that are required to aid the virus in its quest for survival. The two proteins are: Replicase: The replicase is an enzyme that replicates the genome. Capsid: This is a protein that protects the genome.…

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Bacteria metabolism

Bacteria metabolism

The focus of a bacteria metabolism will greatly vary from the type of nutrition they require. There are only 3 types of nutrition for all the bacteria in the world. The distribution of these metabolic traits within a group has traditionally been used to determine their taxonomy. A point to take not of is that these traits often don’t correspond with modern genetic classifications. Nutritional types in bacteria metabolism: Nutitional Type. Source Of Energy. Sour Of Carbon. Phototrophs. Sunlight Organic compounds or carbon fixation. Lithotrophs…

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