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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
What foodborne illness mostly caused by bacteria in soft cheese?
The foodborne illness primarily associated with soft cheese is listeriosis, which is caused by the bacterium Listeria monocytogenes. This illness can lead to severe complications, especially in pregnant women, newborns, the elderly, and individuals with weakened immune systems. Soft cheeses, such as feta, queso fresco, and brie, are particularly risky if they are made from unpasteurized milk. Proper food handling and cooking can help reduce the risk of listeriosis.
Do bacteria and virus spread the same way?
Viral and bacterial infections are both spread in basically the same ways. A person with a cold can spread the infection by coughing and/or sneezing. Bacteria or viruses can be passed on by touching or shaking hands with another person.Feb 5, 2014
Found on Netdocter.Is all Lactobacillus Acidophilus the DDS-1 strain?
No, apparently the DDS-1 strain of Lactobacillus Acidophilus was discovered by Dr. Shahani at the University of Nebraska, and is considered to be a superior strain for supplements because of it's ability to survive the acids in the stomach.
Not all probiotics that say they contain Lactobacillus Acidophilus use the DDS-1 strain. If they have the DDS-1 strain in their probiotic compound, they would most likely advertise it on the labeling. If it is not specified as DDS-1, then most likely it is a different strain.
Is archae bacteria atoutrophic?
Archaea can be autotrophic or heterotrophic, depending on the specific type and environmental conditions. Autotrophic archaea, such as certain methanogens and halophiles, can produce their own food using inorganic substances. However, many archaea are heterotrophic and obtain energy by consuming organic compounds. Therefore, it's not accurate to categorize all archaea as autotrophic.
Fermented by harmless bacteria added after pasteurization?
Yogurt and buttermilk are fermented by a harmless bacteria added after pasteurization to prolong their shelf lives.
How many bacteria in your uncovered toothbrush?
Millions most likely. If you flush your toilet with the lid up, many are fecal.
How bacteria can become harmful to microorganisms?
Bacteria compete with other bacteria and microorganisms by secreting toxins and antibiotic proteins.
Is it true that bacteria are used in food production to produce several types of dairy products?
yes it is
Can azithromycin cure the flu?
No. Azithromycin is an antibiotic. Antibiotics only work to kill or control growth of bacteria. The flu is not caused by bacteria, so antibiotics are ineffective to treat it. Influenza is caused by viruses.
How many species are included in the genus of bacteria Listeria?
The species called Listeria currently contains eight different species of bacteria. The bacteria species that are included in the genus of Listeria are considered to be highly infectious and deadly to humans.
How does trypanosoma brucei differ from bacteria and multi-celled parasites?
Trypanosoma brucei (cause of sleeping sickness) is a protist with a flagella. It is a eukaryote. It is carried by the tsetse fly and humans. Bacteria are prokarocytes and don't have membrane bound organelles. The other parasite mentioned are different and have many cells. For example, tapeworms.
What do bacteria have instead of a nucleus?
By saying nucleus, we mean that the DNA is contained in a membrane structure, that we call the nuclear membrane. However in prokaryotes (bacteria are examples!) the nucleus is not contained in a membrane structure. On the contrary, the DNA is rather suspended inside the cytoplasm itself in a compact form and is called a nucleoid.
The compound eyes of insects, while often remarkable in capability including cnhanced light sensitivity, high speed motion and even polarization detection, are adapted for survival in the macroscopic world. Because of diffraction effects in the small lenses used, microscopic objects such as an individual bacterium would be impossible to resolve. Viruses are orders of magnitude smaller. One could argue that a colony of millions of bacteria might be visible to a bug, but generally the answer would be no; the ability to see germs would simply not be a practical adaptation.
What is haemophilus influenzae b?
It is a type of bacteria that can cause pneumonia. Although the name sounds like influenza, it is unrelated to the flu, which is caused by viruses and not bacteria.
Yes. They have a cell wall. This is commonly considered the dividing line between living and non-living things.
What do you understand by incompatibility of any plasmid?
Incompatibility of a plasmid refers to the inability of two plasmids to stably coexist in the same bacterial host cell. This is usually due to competition for limited cellular resources or to the presence of similar replication origins that interfere with each other's replication process. Plasmids that are incompatible will not be able to establish stable populations within the same bacterial cell.
Bacteria decomposes organisms that have died. This is important because when bacteria decomposes the organism, therefore we have carbon dioxide. If we didn't have carbon dioxide, then we wouldn't have photosynthesis, therefore we wouldn't have plants.
What is the optimal pH range of Pseudomonas aeruginosa?
The optimal pH range for Pseudomonas aeruginosa is around 6.6-7.4. However, P. aeruginosa is known for its ability to adapt and survive in a wide range of acidic and alkaline environments.
Bacteria can act as decomposers, breaking down organic matter and recycling nutrients in the environment. They can also be beneficial by aiding in digestion, producing vitamins, and helping protect against harmful pathogens. However, some bacteria can also be harmful, causing infections and diseases in humans and other organisms.
Answer - None of the above.
1. Resistance increases in direct proportion to an increase in length.
2. Dielectric constant is the tricky one as the answer may depend on your application. Dieletric constants are usually associated with insulators, not conductors.
For fixed voltage/direct current, as long as the dielectric's voltage specifications aren't exceeded, the insulator remains intact. Going beyond that voltage results in current flow (short) and a significant reduction in resistance. So in essence, changing the dielectric constant will alter the resistive properties of your conductor/nonconductor.
For situations dealing with alternating currents, capacitance becomes an issue - as there is a current flow as the electric field fluctuates, but just as before - the dielectric constant is not a factor in a component's resistance... until its voltage ratings are exceeded.
3. An increase in temperature usually results in a decrease in resistance.
4. An increase in cross sectional area results in a decrease in resistance.
Note: If "none of the above" is not an option here, then I would have to select #2 as being the answer, with some qualification as noted.
