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Bacteria

Bacteria are a large domain of single-celled, prokaryote microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals.

2,228 Questions

When was Bartonella bacilliformis isolated?

The bacteria, Bartonella bacilliformis, was isolated by Alberto Barton in 1909, but wasn't identified as the cause of the fever until 1940.

Why do bacteria still survive although you clean your homes every day?

Bacteria are extremely resilient organisms that can survive in various environments. Even thorough cleaning may not always eliminate all bacteria, as they can hide in small cracks, on surfaces, or in the air. Additionally, some bacteria may form spores that are resistant to cleaning agents and can remain viable for long periods of time.

Is pseudomonas aeruginosa catalase positive or negative?

Pseudomonas aeruginosa is catalase positive, meaning it produces the enzyme catalase which converts hydrogen peroxide into water and oxygen. This can be used as a diagnostic test to differentiate it from other bacteria that may be catalase negative.

What is cyanobacteria is now classified as?

Cyanobacteria are now classified as part of the domain Bacteria. They are prokaryotic organisms that are capable of performing photosynthesis like plants and algae.

What if a lense is contaminated with Staphylococcus or Acanthamoeba?

If a contact lens is contaminated with Staphylococcus or Acanthamoeba it could cause an eye infection that may lead to blindness if not treated. Steps are taken in a lab to make sure microscope lenses are free from contamination, but it is possible for this to occur.

What percentage of Guillan-Barre syndome cases is caused by the C.fetus subtype of the Campylobacter bacteria.?

Approximately 25% of Guillain-Barré syndrome cases are thought to be triggered by infection with Campylobacter jejuni, with the C. fetus subtype being less common. The exact percentage caused specifically by the C. fetus subtype is not well established.

What organs and systems can be affected by Campylobacter bacteria?

Campylobacter bacteria primarily affect the gastrointestinal system, causing symptoms like diarrhea, abdominal pain, and fever. In severe cases, it can lead to complications such as sepsis and Guillain-Barré syndrome, which affects the nervous system.

What is the range of treatment for patients infected with Campylobacter?

Treatment for patients infected with Campylobacter typically involves supportive care to manage symptoms such as diarrhea and dehydration. In severe cases or for immunocompromised patients, antibiotics may be prescribed to shorten the duration of illness and reduce the risk of complications. It is important to stay hydrated and follow medical advice for appropriate treatment.

What is the most common condition caused by Campylobacter bacteria?

The most common condition caused by Campylobacter bacteria is gastroenteritis, which is an infection of the digestive system characterized by symptoms such as diarrhea, abdominal pain, fever, and nausea. In most cases, the symptoms are mild and resolve on their own without requiring medical treatment.

What is the listeriosis survival rate in newborns infected with Listeria?

The survival rate of newborns infected with Listeria can vary depending on factors such as the gestational age at birth, the severity of infection, and how quickly treatment is initiated. In general, the survival rate can range from 50% to 80%, with prompt diagnosis and treatment being key factors in improving outcomes.

What is the different reaction of Gram-negative and Gram-positive bacteria to Gram's stain testing?

Gram-positive bacteria retain the crystal violet stain and appear purple when stained with Gram's stain, because the thick peptidoglycan layer in their cell wall traps the dye. On the other hand, Gram-negative bacteria do not retain the crystal violet stain and appear red or pink after the addition of a counterstain like safranin, due to their thin peptidoglycan layer which is unable to retain the dye.

What is diphtheria's bacteria?

The bacteria that causes diphtheria is Corynebacterium diphtheriae. This bacterium produces a toxin that can lead to the characteristic symptoms of diphtheria, such as a thick gray coating in the throat and difficulty breathing. Vaccination against diphtheria is highly effective in preventing the disease.

What is bacterial mesosome?

In some locations, the cell membrane forms internal folds in the cytoplasm called mesosomes.

Denying all claims of having functional role, recent studies have shown that mesosomes are artifacts of preparation, resulting from stain fixation.

References: The Cell, A Molecular Approach, 5th Edition

An Introduction to Cell Biology, Edition 2010

See link below:

What if there is insufficient fluid to use in the identification of the bacteria that caused mastoiditis?

If there is insufficient fluid for bacterial identification, other diagnostic methods such as blood cultures or imaging studies may be used to help determine the causative agent. Clinical presentation and history can also guide antibiotic selection. In some cases, empirical treatment based on common pathogens causing mastoiditis may be initiated.

What happens when Borrelia burgdorferi gains entry to the body?

it can move through the bloodstream quickly. Only 12 hours after entering the bloodstream, Borrelia burgdorferi can be found in cerebrospinal fluid (which means it can affect the nervous system

What do mycoplasma cause?

Male mycoplasma infection probably causes nongonococcal urethritis, with the clinical symptoms as follows: urethra discomfort, burning or painful urination, itch urethra, urethral meatus inflammation, urethral secretion increase, urethral obstruction in early morning. But sometimes, patients could have no clinical symptoms.so if you find these symptoms ,you should get tested soon and get treatment. diuretic anti-inflammatory pill is a good choice and has cured a lot of patients suffering mycoplasma infection.So you surf on the internet.

What do Klebsiella and Proteus cause?

Klebsiella and Proteus sometimes cause pneumonia, ear and sinus infections, and urinary tract infections

What is the bacterial cell called when the f factor is in plasmid form?

When the F factor is in plasmid form within a bacterial cell, the cell is referred to as an F-positive or F+ cell. This means the cell carries the plasmid containing the F factor, which enables the cell to transfer genetic material during conjugation.

What carries Borrelia burgdorferi in the US?

In the United States, Borrelia burgdorferi is primarily carried by the black-legged tick, also known as the deer tick. These ticks become infected with the bacteria by feeding on animals such as mice and deer that harbor the pathogen. When the infected ticks then feed on humans, they can transmit the bacteria, leading to Lyme disease.

Is true or false reheating leftovers in the microwave can leave cold spots for bacteria to grow?

True. Uneven heating in the microwave can lead to cold spots in leftovers, which can allow bacteria to grow and cause foodborne illness. It is important to stir the food and ensure it reaches the appropriate internal temperature when reheating in the microwave.

Does bacteria give off poisons that can damage or kill body cells?

Some forms of bacteria can be toxic to body cells, all right. There are many beneficial bacteria in your body, too, though.

What is coccoid bacteria?

Coccoid bacteria are spherical in shape and can be found in various environments including soil, water, and the human body. They are a type of bacteria that can exist as single cells or form clusters, and can be both beneficial and harmful to humans depending on the species.

Is a bacterial infection a symbiotic relationship?

A bacterial infection is not typically considered a symbiotic relationship because it usually involves a harmful interaction where the bacteria benefits at the expense of the host. In a symbiotic relationship, both parties usually benefit or at least one is unaffected.

What is the type of milk called when it is heated to kill harmful bacteria?

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What is bacteria power?

"Bacteria power" refers to the ability of certain bacteria to generate energy through various metabolic processes, such as fermentation, respiration, or photosynthesis. Some bacteria can harness this energy to thrive in diverse environments, ranging from extreme habitats like deep-sea vents to our own digestive tract.