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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

Do most bacteria have flagella?

A penicillum does not have flagella, it is a drug, or antibiotic

What process that uses gamma rays to eliminate harmful bacteria in meat and poultry?

Gamma rays have extremely high energies, and seeing as they are a form of ionizing radiation, they can cause cellular damage. When gamma rays are aimed at bacteria, in much the same as radiation harms humans, DNA damage occurs eventually resulting in the death of cells.

What are the main bacteria that cause contamination of food?

by contaminating it of course who asks such silly questions. and i only did this because i was bored so do not judge me and do not curse me by you know who F JAM from confusion.

What is bacteria what is the carrier?

a bacterial carrier is usually call this because it carries a significant amount of bacteria. bacteria resides on 99% of everything in this world. something such as a fly, or a rat can at times carry concentrated amounts of harmful bacteria... and sometimes reffered to as bacterial carriers. a person who is sick with some type of bacterial infection could also be considered a bacterial carrier. Although most of the time when someone reffers to something as a bacterial carrier they mean something or someone containing significant amounts of harmful bacteria, it is in my opinion that pretty much anything can carry harmful bacterial at some level; therefore pretty much anything can be a bacterial carrier.

What bacteria do you have in your digestive tract?

MILLIONS of them, not all cataloged or identified even today. You are outnumbered even within your own skin; there are more bacteria and other non-human cells in your body than there are human cells.

How many cells make up a bacterium?

Bacteria are one cell organisms.

They reproduce very very rapidly (when enough food is available for them) and a colony of bacteria on a nutrient culture in a petri dish or in uncooked food can contain many millions of individual bacterial cells (and millions of colonies may be present)! This is why food poisoning from improperly handled foods is a serious problem.

Is chicken pox protist bacteria or virus?

Chickenpox is caused by the varicella-zoster virus, which is a type of virus, not a protist or bacteria. It is highly contagious and primarily spreads through respiratory droplets or direct contact with the rash. While the disease is usually mild in children, it can lead to more severe complications in adults and individuals with weakened immune systems. Vaccination is the most effective way to prevent chickenpox.

Why do you think Linnaeus didn't include classifications for archaea and bacteria?

At the time, there were only two kingdoms: plantae and animalia. Only until later were different species found.

What are some common traits of bacteria and archaea?

There are two traits that archaeans and bacteria share. These are the presence of a plasma membrane and the lack of a nuclear envelope.

Is salmonella a virus or bacteria or fungus or protist?

Salmonella is a disease-causing bacterium which could often be found in raw chicken meat. Salmon is a fish.

What does streptococcus eat?

Streptococcus A (the kind that causes strep throat as well as necrotizing fasciitis) eats your body. It secretes an enzyme that breaks down your tissue and allows the bacteria to break down your cellular proteins into smaller bits it can consume

What kind of bacteria is in the bladder?

Bacteria are the most common cause - most frequently Eschericia coli. UTI's in females are generally caused by normal flora from the gastrointestinal tract (due to the close proximity). Other frequently encountered organims include the bacteria Proteus, Staphylococci. Hospital acquired organisms include the bacteria Pseudomonas, Klebsiella and Enterobacter. The yeast Candida may cause a UTI - but rarely. Even less common are parasites and viruses.

In summary: Bacteria are most often involved; E. coli the most common bacteria.

How do good bacteria can affect our lives?

Probiotics are a type of good bacteria that keep us healthy. These bacteria are found in the intestines and help to conquer disease.

Why bacteria grows faster ion open air than in refrigerator?

The incubation time is important because however long your culture is kept in incubation affects how many colonies you will have at the end. A short incubation time will result in minor bacterial growth, whereas a longer incubation will result in more colonies, as you're giving the bacteria more time to grow.

Be careful, if you leave your culture in incubation for too long, the bacteria will begin to use up all of the agar and start competing for food resources. If left even longer, this will consequently result in the death of your culture.

Do bacteria produce enzymes?

Are you dumb or what? Of course not all bacteria produce urease. Most bacteria that produce urease are bacteria that are in the stomach or intestine where there is present of high gastric acidity. This urease will serve as a function to reduce the acidity and increase towards a neutral PH so that the bacteria could survive in the intestine. Otherwise without the urease, the high acidity would normally kill the bacteria.

Do organisms live in isolation?

No. Every living organim must have some form of interaction to operate.

False. Easier for people to under stand than no.

Is bacteria the most abundant form of life earth?

The reason there are so many gay people now is because it's a chemical warfare operation. I have the government documents where they said they're going to encourage homosexuality with chemicals so people don't have children.

Why did bacteria in the agar dish turn yellow?

to see time fly!

You may be referring a bacterial transformation experiment. If so, the bacteria turns color to indicate that the DNA that was transferred to the bacteria is being expressed and the transformation was successful. If you are referring to the natural color of bacteria growing in large colonies on agar, that beige color is their natural color only visible when they are growing in colonies by the millions.

The yellow color could also be a fungus which has contaminated your plate which happens often in a non-sterile classroom environment.

Never open a petri dish after bacterial growth or fungal growth is evident.

What is it called when bacteria does not hurt its host?

Any symbiotic relationship in which one organism benefits while the other is unaffected is called a commensalisticrelationship.

Why are bacteria unable to live in our bodies?

Bacteria do live in and on our bodies, in fact we could not live without the bacteria that live symbiotically in our gut helping us digest foods and forming the majority of the mass of our feces.

However there are many places in our bodies where bacteria can harm us when they live there, causing diseases. Our immune system attempts to track down and kill bacteria (as well as viruses, parasites, fungi, etc.) in those places and limit the damage. One part of the immune system reacts as a "generalist" attacking all unknown foreign cells that it does not recognize as "self", another part of the immune system reacts as a "specialist" learning what has attacked us and preparing to fight that in the future when it is encountered again. This "specialist" portion of the immune system can be preactivated by vaccination to prevent disease.

What do endospores do for bacteria?

Endospores are dormant, resistant structures formed by some bacterial species to survive harsh environmental conditions such as extreme temperatures or lack of nutrients. They allow bacteria to remain viable for long periods and then germinate once conditions become favorable again.

The best way to destroy harmful germs that may be present in food?

Bringing the food to a high enough temperature will kill the bacteria. You can do this by cooking it for a while, frying, roasting or baking. Microwaving food should also kill bacteria but I am not sure whether it is just the microwave radiation that accomplishes this or the food has to become hot enough.

What type of bacteria feeds on dead things?

Bacteria that feed on dead organisms are called decomposers. I will explain how it works with plants. When plants are eaten by an animal or have died there are called ammonium compounds. Then ammonium compounds are decomposed by bacteria called decomposers and turned into nitrites. Then they get nitrified by bacteria called nitriying bacteria and turned into nitrates. Then the nitrates are absorbed by the roots of plants and the cycle starts again. There is a cycle that includes this that might help. Its called the nitrogen cycle.