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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 is the differences n prokaryotic cells and eukaryoti cells?

The simplest answer is that prokaryotic cells do not have a membrane-bound nucleus, and eukaryotic cells do. The nucleus is a compartment where the cell stores its genetic information (DNA). Prokaryotes' DNA is simply within the cytoplasm.

Another simple difference is that eukaryotes have membrane-bound organelles, whereas prokaryotes lack this feature.

When was the first life forms of bacteria?

3.5 Billion Years Ago. This is how old fossil stromatolites have been dated. You can find modern versions of these same formations growing now off the coast of Australia.
About 3,500 million years ago.

What is an important role of bacteria?

Bacteria are the most abundant organisms in the world. Scientists believe that bacteria helped create the earth's atmosphere. By producing so much life-producing oxygen, bacteria eventually made the atmosphere habitable for all creatures, including humans.

Bacteria are importnant to the planet as decomposers of dead organic matter, processors of nitrogen, and makers of medicine

Is Amebiasis a bacteria?

No, amebiasis is not caused by bacteria. It is an infection caused by a parasite called Entamoeba histolytica.

How can cyanobacteria in contrast to saprotrophic bacteria live in environment that lacks organic nutrients?

Cyanobacteria can utilize sunlight through photosynthesis to produce energy, allowing them to live in environments lacking organic nutrients. They can also fix atmospheric nitrogen, enabling them to obtain essential nutrients for growth. Additionally, cyanobacteria can form symbiotic relationships with other organisms to obtain nutrients in nutrient-poor environments.

Is bacteria in air soil and the human body?

Yes, bacteria can be found in all three environments – air, soil, and the human body. In the air, bacteria can be carried by dust particles or released from soil or water sources. In soil, bacteria play essential roles in nutrient cycling and decomposition. In the human body, bacteria are present in various locations, such as our skin, gut, mouth, and other mucosal surfaces, where they can be beneficial or harmful depending on the specific species and context.

How are halophiles adapted for their environment?

Halophiles disientergrate within themselves and produce chemicals like glucose to help them survive. Halophiles were discovered on eearth rouhly 2200 years ago and ancient scientists put salt into the cells to record the results. From then on the offspring of this Halophiles can live in salt. This means that the legacy of these scientists will live on for evermore.

How many spieces of bacteria are there?

their could be many different types of bacteria and no one knows for sure how many there is

What is the smell of bacillus subtilis?

Bacillus subtilis generally has a neutral smell. It doesn't have a distinct or strong odor.

Are boils a bacteria or virus?

Boils are generally caused by bacterial infections, most commonly by the Staphylococcus aureus bacteria. The bacteria usually enters the body through small cuts or hair follicles on the skin, causing an infection that leads to the development of a boil.

What three short chain fatty acids are produced by bacterial fermentation of fiber in the colon?

The three short chain fatty acids produced are acetate, propionate, and butyrate. These SCFAs play important roles in supporting digestive health, providing energy to colon cells, and influencing various physiological functions in the body.

What do vent tubeworms and chemosynthetic bacteria get from there close relationship?

Vent tubeworms provide a stable environment and chemical compounds for chemosynthetic bacteria to thrive while the bacteria convert chemicals from the hydrothermal vent into energy for the tubeworms. This symbiotic relationship allows both organisms to obtain essential nutrients and energy from an otherwise harsh environment.

When insulin was being commercially produced in genetically engineered bacteria and yeast it was obtained from the pancreas of what?

When insulin was being commercially produced in genetically engineered bacteria and yeast, it was obtained from the pancreas of pigs and cows. This animal insulin was then purified and used as a template to create synthetic human insulin through genetic engineering processes.

Is cyanobacteria monera or protists?

Cyanobacteria is classified as monera, specifically within the kingdom Monera. They are prokaryotic organisms, lacking a true nucleus, and are commonly referred to as blue-green algae.

Is staphylococcus aureus sexual or asexual?

Staphylococcus aureus reproduces through asexual means, specifically through binary fission where a single cell divides into two identical daughter cells. There is no sexual reproduction involved in the life cycle of this bacterium.

What classification of protists would include paramecia?

Paramecia belong to the classification of protists known as ciliates. Ciliates are characterized by the presence of hair-like structures called cilia, which they use for movement and feeding.

What type of food is made without bacteria?

I had to do a project about foods without bacteria. To be honest, there is absolutely no food without bacteria. Bacteria is everywhere, inside you around you. THERE IS NO ESCAPE! I myself searched for hours on this subject, and still didn't have any luck with the topic. I am sorry that I couldn't have help you more. :'/

What is the first step in identifying bacteria?

There are many ways to identify an unknown bacteria. The method to identify depends on tools available and setting. A medical setting has different identification process than an educational setting. Both places would usually begin with a gram stain. A gram positive bacteria would appear purple under a microscope, whereas gram negative would appear orange. Another way to identify bacteria would be to choose different agar plates to grow the bacteria. The presence of bacterial growth on different media helps to identify the unknown bacteria.

Is Potato blight a bacteria or virus?

Potato blight, also known as late blight, is caused by a water mold called Phytophthora infestans, which is neither a bacteria nor a virus. It is a type of oomycete, which is a group of fungus-like microorganisms that can cause plant diseases.

What would happen if all the nitrogen-fixing bacteria disappeared?

Life dependent on plants would die. The nitrogen fixing bacteria change nitrogen into a useable and they have a symbiotic relationship with plants. Plants need the nitrogen to synthesize amino acids. Without being able to synthesize amino acids, the plant would die and the other organisms dependent on it would starve/die off.

What type of phylum does paramecium live in?

Paramecium belongs to the phylum Ciliophora, which is a group of organisms known as ciliates. These single-celled protists are characterized by the presence of hair-like structures called cilia on their surface, which they use for locomotion and feeding.

What important question remained unanswered by griffith experiment?

Assuming you mean the Frederick Griffith bacterial experiment, the question left unanswered was how the rough strain (less harmful) bacteria transformed into the smooth strain (lethal) bacteria. When he injected live rough strain bacteria, the mouse lived. When he injected live smooth strain bacteria, the mouse died. But if dead smooth strain bacteria was injected, the mouse lived. So if either live rough strain or dead smooth strain could be injected without killing the mouse, then it would stand to reason that one could inject both, the mouse should live. But the mouse died. So he figured the rough strain was somehow taking on the characteristics of the smooth strain bacteria, perhaps by being in close proximity to dead smooth strain bacteria, but he didn't know why. We now know that the smooth strain DNA was somehow getting grafted into the rough strain bacteria and making it able to create a coating which prevented the immune system (of the mouse in this case) from killing it.

In case you mean the John Howard Griffin racial change experiment, the question left unanswered was how to stop racism. While his experiment was not completely successful, he gained a number of insights into the experiences of men of color in America. He was able to speak to people in both groups, but yet, he was not able at that point to get them to reconcile with each other.

Why bacterial mesosome similar to mitochondrial crestae?

The similarities in appearance between these structures are pretty clear. The mitochondrion is a double-membrane organelle, with a smooth outer membrane and an inner membrane which protrudes into the interior of the mitochondrion in folds called cristae. This membrane is very similar in appearance to the prokaryotic plasma membrane with its mesosomes.

What is the strong mechanical barrier that resists penetracted from pathogens?

The skin is the strong mechanical barrier that resists penetration from pathogens. Its outermost layer, the stratum corneum, along with the tight junctions between skin cells, provides protection against the entry of microorganisms into the body.

Is bacteria the same as lactobacillus vulgaris?

No, bacteria is a broad category that includes a wide variety of different microorganisms, while Lactobacillus vulgaris is a specific species of bacteria within the Lactobacillus genus. Lactobacillus vulgaris is commonly found in the human gastrointestinal tract and is known for its probiotic benefits.