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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

Could you please tell me 3 names of pathogenic bacteria and their shapes?

Sure! Three pathogenic bacteria and their respective shapes are:

  1. Escherichia coli (E. coli) - rod-shaped
  2. Streptococcus pyogenes - spherical (cocci)
  3. Mycobacterium tuberculosis - rod-shaped (bacilli)

How fast can bacteria species grow on agar plates?

Bacteria species can grow at varying rates on agar plates, depending on factors such as temperature, nutrient availability, and the specific species of bacteria. Under optimal conditions, some bacterial species can double in population every 20 minutes, while others may take several hours to days to form visible colonies on agar plates.

What causes streptococcus?

Streptococcus is a gram-positive bacteria that causes various illnesses in human bodies. To answer the question briefly, the streptococcus is caused by other streptococcus, which asexually reproduces by binary fission to get another streptococcus. To answer the question regarding the disease, the disease is simply caused by the bacteria.

Could an organism be a fermenter and also be both MR and V-P negative?

Yes, an organism can be a fermenter and be both MR (methyl red) and V-P (Voges-Proskauer) negative. Fermentation is a metabolic process that converts sugar into acids, alcohols, or gases, but the MR and VP tests specifically evaluate different aspects of sugar metabolism that may not be related to fermentation. So, an organism can still ferment sugars without giving positive results on these tests.

What is the purpose of prolonged application of heat on the smear?

by application of heat and a mordant, the cell can be stained. the purpose of heating is to soften the waxy material of the cell wall and allow the stain enter the cell. rock on University of Luzon!

I swallowed some anti-bacterial foaming soap. Is this bad?

The active ingredient in antibacterial soap, triclosan, is not toxic. It is used in soap, deodorant, mouthwash, etc.

Be more careful. Things that taste yucky are probably never good for you to consume often.

Ecsept Veggies!

What is micro culture?

Concept of micro culture definedMicro Culture: Is a small unit of culture within a wider general culture. It is the identity and traits of a particular people within a dominant culture that is never lost to assimilation. It is the customery beliefs, social forms and material traits of a racial, religious or social group.Example: The native Americans within the wider of the usa.Chinemere Cralph

Owerri

What bacteria are microaerophiles?

These are microrganisms that need some or little oxygen to grow, however, if they receive oxygen concentrations reach those found in air (20%), they are unable to grow. Hence they need the right amount of oxygen. The source http://mansfield.osu.edu/~sabedon/biol2020.htm

What is the principle of methyl red test?

MRVP media contains glucose,peptone and phosphate buffer.Many enteric organism can overcome the buffering capacityb of media by producing large amount of stable acids as end product,thus lowering the pH.this acid production is detected bt methyl red indicator,which remains red in color at a pH of 4.4 or less.9red pH<4.4 or less,yellow pH >6).

What does a petri dish look like?

A petri dish is a shallow, circular dish made of glass or clear plastic that is used in laboratories for culturing cells or bacteria. It typically has a flat bottom and a lid to prevent contamination. The dish is transparent to allow easy observation of the growth of microorganisms inside.

How do black light uv kills algae?

Black light UV works by emitting ultraviolet (UV) radiation that damages the DNA of algae, preventing the algae from reproducing and eventually killing them. The UV light targets the cells of the algae, disrupting their biological processes and ultimately leading to their death.

How does the fact that when a bacterium reproduces the offspring are exact copies of the parent bacterium affect under what conditions would this stadegy would help a species continue in the future?

The reason that bacteria have been able to survive so long is that the asexual reproduction that they use allows for very little mutation, so as long as the environment stays the same, the bacteria will thrive. When mutation, or evolution does occur, because of the asexual reproduction the mutations are much more extreme and fast (because there is no recombination fo the DNA as in sexual reproduction). So the species will be able to survive in the new environment, thus the bacteria are able to survive.

What kind of bacteria can you find in an ash tray?

Bacteria found in ashtrays can include various species that are commonly found in soil and on surfaces such as Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli. These bacteria can thrive in the debris left in ashtrays and may pose health risks if they come into contact with skin or are inhaled. Regular cleaning and disinfection of ashtrays are important to prevent the growth and spread of harmful bacteria.

Do metabolic reactions occur in isolation?

Metabolic reactions do not occur in isolation, as they are interconnected and form complex metabolic pathways within cells. These pathways involve a series of reactions that are tightly regulated and coordinated to maintain cellular function and energy balance. The products of one reaction often serve as substrates for the next, allowing for efficient energy production and utilization.

What is the description of lactobacillus acidophilus?

Lactobacillus acidophilus is a type of bacteria that is part of the normal flora in the human intestine. It is considered a probiotic because it helps maintain the balance of good bacteria in the gut. L. acidophilus is commonly found in yogurt and other fermented foods.

What is the gram stain results for an L. lactus bacteria?

Lactococcus Lactus is a gram positive bacteria and therefore retains the darker staining and therefore shows on a gram stain as dark blue/violet colour. This is because the thick peptidoglycan cell wall retains the primary crystal violet stain.

How are bacteria classified?

Bacteria are classified in many ways. Most bacteria are classified by their shape, cell wall, movement, eating, and breathing.

The most useful technique of classification would be the Gram stain. The Gram stain distinguishes between differences in the cell wall composition of bacteria (Gram positive or Gram negative).

The shape of the bacteria could be spherical (coccus), rod (bacillus), spirochete, or vibrio (curved rod).

The texture could be wet/moist, dry, or mucoid. Bacteria come in a wide variety of colors.

Why are antibiotics made by fungi and bacteria?

Fungi and bacteria produce antibiotics as a defense mechanism against other microorganisms in their environment. These antibiotics help them compete for resources and survive in their ecological niche. Humans have harnessed this microbial warfare for medical purposes to combat bacterial infections.

What is the treatment for proteus vulgaris?

Proteus vulgaris infections are typically treated with antibiotics, such as fluoroquinolones, cephalosporins, or trimethoprim-sulfamethoxazole. The choice of antibiotic may depend on the sensitivity of the bacteria to specific medications, which can be determined through a culture and sensitivity test. It is important to complete the full course of antibiotics as prescribed by a healthcare provider to effectively clear the infection.

Can you kill bacteria by dropping it to a certain temperature?

It depends on the time and temperature. Lets say, you drop the temperature of the bacteria's environment to -50 degrees C for 1 minutes. It would have a larger possibility of making the inner bacterial plasma to freeze and expand thus breaking the cell wall and killing the bacteria then you expose the bacteria to - 100 degrees for 0.001 second. But do be aware of bacterias that have anti-freeze capabilities in their genes. They might stand extreme cold temperature without dying because the anti freeze genes produce anti freeze proteins that help delay the plasma from freezing. But for sure, all beings have their limits eh.... we just don't know the limits are... -RPW-

What type of bacteria is in insulin?

Well, the insulin a diabetic gets does not contain any bacteria. It is sterile. However, the insulin is made by bacteria, usually E. coli. Hope this helps! Some Stuff about the E.Coli Bacteria:

• • The Bacteria E.coli used to produce insulin for those with diabetes • It's Inexpensive - compared with 1980 methods(extracting insulin from pigs etc.) • Large quantities of the modified bacteria are killed and insulin is extracted and purified. •The Bacteria E.coli used to produce insulin for those with diabetes

Is bacteria a producer in a trophic level?

Bacteria are typically considered part of the decomposer trophic level, rather than the producer trophic level. They break down organic matter and recycle nutrients back into the ecosystem, playing a crucial role in nutrient cycling.

What do bacteria eat?

AnswerWhy, bacteria eat almost anything they can get! Of course, they can't chew through cement. They can eat anything edible to animals and humans, probably more! Take wood for example, termites eat wood, bacteria eat wood too. In fact, termites wouldn't even be able to eat wood if it wasn't for the bacteria in their stomachs!

Bacteria are decomposers. Decomposers eat anything dead and once they are finished they put nutrients from the dead object or plant back into the ground to grow new plants.

Why do prokaryotes include bacteria?

Prokaryotes include bacteria because they are single-celled organisms that lack a nucleus and other membrane-bound organelles. Bacteria are among the simplest and most abundant forms of life on Earth, playing critical roles in various ecological processes such as nutrient cycling and decomposition.

Does fruit essence kill bacteria?

Fruit essence is not known to have antibacterial properties that can effectively kill bacteria. It is mainly used for flavoring and aroma in various food and beverage products. If you are looking to kill bacteria, it's recommended to use specific antibacterial agents or products designed for that purpose.