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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

Does nutrient agar supports the growth of more or fewer organism than a complex medium?

Nutrient agar supports the growth of fewer organisms compared to a complex medium because it contains fewer nutrients. Complex media typically have a more diverse array of nutrients, allowing for the growth of a wider variety of organisms.

Why couldn't you see a virus with your microscope even if you increased the eyepiece lens magnification to 100x?

Viruses are much smaller than the resolution limit of a light microscope, which is about 200 nanometers. Most viruses are around 20-400 nanometers in size, making them too small to be seen with a light microscope even at high magnifications like 100x. Specialized techniques like electron microscopy are needed to visualize viruses.

Which type of media would be the best choice when shipping a sample of bacteria to a laboratory to be tested from a satellite office site?

A solid transportation medium, such as slants or stab cultures, would be the best choice for shipping bacterial samples to a laboratory from a satellite office site. This ensures that the bacteria remain viable during transit and are protected from potential contamination. Additionally, including ice packs or a cold pack in the shipment can help to maintain the integrity of the samples.

What is myoplasma?

Mycoplasma is a type of bacteria that lack a cell wall and are known to cause respiratory infections in humans, such as walking pneumonia. They are often treated with antibiotics that are effective against this type of bacteria.

What kinds of bacteria do people encounter everyday?

People come across all sorts of bacteria in a day, but is all bactiera bad for you? as my sister calls it "goodatcteria" well im can't name all the bateria we would be here all day. so here it goes..... theres idk and idk and idk :p

Why are bacteria good to add to a composting heap?

Bacteria help break down organic matter in a compost heap by decomposing it into simpler compounds, speeding up the composting process. They also help maintain the balance of nutrients and pH levels in the compost, creating an ideal environment for other microorganisms to thrive. Additionally, bacteria in compost help suppress the growth of harmful pathogens and odors, resulting in a healthier and more effective composting process.

What prevent bacteria from reproducing continually?

Healthcare professional can prevent the spread of antibiotic resistance by: Prescribing an antibiotic only when it is likely to benefit the patient. Prescribing an antibiotic that targets the bacteria that is most likely causing their patient's illness when an antibiotic is likely to provide benefit.

Why is it important to immobilize the bacteria on a slide prior to staining?

Immobilizing the bacteria on a slide prior to staining helps prevent them from being washed away during the staining process. This ensures that the bacteria remain in place and are properly situated for observation under the microscope. It also helps to maintain the integrity of the sample and improve the accuracy of the staining results.

Does haemophilus influenza compare to todays Flu?

Not at all, because Haemophilus influenzae (Hib) is the name of a type of bacteria and the flu is caused by viruses;they are entirely different infectious disease-causing organisms. Although the name includes "influenzae" it is not a "flu" virus. When this bacterium was first named in 1892, it was during an influenza pandemic at the time. It was thought then to be the cause of the influenza until 1933 when more was known about viruses and Hib was determined more conclusively to be bacterial and not viral. H. influenzae causes a wide range of different infectious disease processes but it does not cause the flu.

What is an ideal number of colony forming units for an effective enumeration using the direct method?

The ideal number of colony forming units (CFUs) for an effective enumeration using the direct method is generally between 30 and 300 CFUs per plate. This range helps ensure accurate counting without overcrowding the plate or having too few colonies for statistical significance. It allows for a good balance between countable colonies and reliable results.

Why is it important to kill all the bacteria in the raw sewage duringphage isolation?

because bacteia that are present will contaminate the plates that will be used to isolate phages and will be imposible to detect the phages.Normally sewage are filter sterilized before isolation.

What happens if the temperature is too hot or too cold for the bacteria?

If the temperature is too hot, the bacteria may be killed due to denaturation of their proteins. On the other hand, if the temperature is too cold, the bacterial growth and metabolism may slow down significantly or even stop. Both extreme temperature conditions can disrupt normal bacterial function and hinder their survival and growth.

What loosens bacteria from the skin?

Soap and warm water help to loosen and remove bacteria from the skin by breaking down oils and dirt that may be harboring the bacteria. Proper handwashing techniques can help to effectively remove bacteria from the skin.

Is bacteria a uncellular or a multicullar?

Bacteria are single-celled organisms, making them unicellular. They do not have a nucleus or other membrane-bound organelles like multi-cellular organisms do.

Which has more bacteria your shoes a door knob your telephone the toilet seat or your comb?

a toilet seat has more bacteria because a toilet seat is what everybody uses every day. to take number 2's or dunks, and urinate. which sometimes goes on the seat and you forget to clean it.

What type is more difficult to remove between normal flora and transient bacteria?

Normal flora is more difficult to remove than transient bacteria. Normal flora are naturally occurring bacteria that have established a stable population on the body's surfaces, making them more resilient to removal efforts. Transient bacteria, on the other hand, are temporary and easier to remove through basic hygiene practices.

What temperature does bacteria start to die at when frozen?

It actually depends on the kind of bacteria. Based on their temperature requirements (temperatures at which they grow) bacteria are classified as psychrophiles (very low temperatures... even below zero).. mesophiles (above zero to say 20-30 on an average...).. thermophiles (above 50).. extreme thermophiles (very extreme temperatures such as hot springs.. may be in hundreds...).

What is the difference between thermophiles and halophiles?

Thermophiles are microorganisms that thrive in high temperature environments, while halophiles are microorganisms that thrive in high-salt environments. Both types of extremophiles have adapted to survive in these extreme conditions by evolving specific metabolic and physiological strategies.

What is the optimum temperature of enzymes of thermophilic bacteria?

The optimum temperature for enzymes of thermophilic bacteria is typically around 70-80°C. These enzymes have evolved to function best at high temperatures, allowing the bacteria to thrive in extreme environments such as hot springs and deep-sea hydrothermal vents.

Does cyanobacteria have pseudopodia?

No, cyanobacteria do not have pseudopodia. Pseudopodia are temporary protrusions of the cell membrane used for movement in certain single-celled organisms like amoebas, while cyanobacteria move through gliding or floating.

Can men catch klebsiella?

Yes, men can catch klebsiella infections. Klebsiella is a type of bacteria that can cause various infections in people, regardless of gender. It is important to practice good hygiene and seek medical treatment if you suspect an infection.

What scientific tool would you use to look at something very small like bacteria?

You would use a microscope to look at something very small like bacteria. There are different types of microscopes, such as light microscopes and electron microscopes, that can magnify objects at the microscopic level.

What is the main source of staphylococcus bacteria?

The main source of Staphylococcus bacteria is typically human skin and nasal passages. It can also be found in the environment, on surfaces, and in contaminated food. Staphylococcus bacteria can easily spread through direct contact or through contaminated objects.