The result of sweat sitting on bacteria crowded areas of the skin is called body odor. Sweat itself is odorless, but when it mixes with bacteria on the skin, it can produce a distinct smell that varies from person to person. Regular bathing and wearing breathable fabrics can help manage body odor.
What is the staining process for separating bacteria?
One common staining process for separating bacteria is the Gram staining method. This involves applying crystal violet, iodine, alcohol, and safranin to the bacterial sample. Gram-positive bacteria will retain the crystal violet stain, appearing purple, while Gram-negative bacteria will not retain it and will appear pink after the safranin counterstain.
What are the classification schemes of fungus and bacteria?
Fungi are classified into divisions based on their reproductive structures, such as Ascomycota (sac fungi) and Basidiomycota (club fungi). Bacteria are classified based on their shape, cell wall composition, and metabolic properties, leading to groups like cocci (spherical) or bacilli (rod-shaped) and Gram-positive or Gram-negative bacteria.
How is an endospore an evolutionary advantage endospore-producing bacteria?
Imagine if you have two different bacteria. They are just hanging out, doing what they do, enjoying their nice, nutrient rich environment. They get to divide over and over...life is good. Then the nutrients start to dry up, all of a sudden there is no more food! The bacteria that cannot produce endospores shrivel up and they, and all of their offspring die! The bacteria capable of that final internal division and capable of using its internal goo to use as an iron clad capsule to protect its genetic material can then go metabolically dormant for...ever. When the environment improves it can resume its happy division. 2 bacteria enter...one bacteria leaves! There is your evolutionary advantage.
Which domain would one classify bacteria that live in hydrothermal vents?
The domain for bacteria that live in hydrothermal vents would be "Bacteria." They belong to the domain Bacteria in the three-domain system of classification, which includes Bacteria, Archaea, and Eukarya.
What selective agent found in Mannitol Salt Agar?
Mannitol Salt Agar typically contains a high concentration of salt, which acts as the selective agent. This high salt concentration provides an environment that restricts the growth of many organisms, allowing only salt-tolerant bacteria such as Staphylococcus species to grow on the agar plate.
Which type of bacteria caused disease the S form or R form?
The S form of bacteria typically causes disease, as it has a polysaccharide capsule that aids in virulence and evasion of the immune system. The R form does not have this capsule and is usually avirulent.
Why do protest differ from bacteria and archaea?
Protests are eukaryotic organisms with distinct cellular structures and organelles, while bacteria and archaea are prokaryotic organisms lacking a true nucleus and membrane-bound organelles. Additionally, protests typically have a more complex cellular organization and can exhibit various forms of motility, whereas bacteria and archaea are typically unicellular and exhibit simpler structures.
Are membrane bound organelles in bacteria?
Bacteria do not contain membrane-bound organelles such as mitochondria or chloroplasts, as eukaryotes do. However, photosynthetic bacteria, such as cyanobacteria, may be filled with tightly packed folds of their outer membrane. The effect of these membranes is to increase the potential surface area on which photosynthesis can take place.
Why does bacteria grow on sugar?
Only certain bacteria can grow on sugar (sucrose). In order for a bacteria to be able to grow on sugar a certain level of moisture must be present along with the ability to absorb sugar as a food/energy source.
What makes some bacteria harmful?
some bacteria produce toxins in their metabolism which is harmful for humans. if you have used antibiotics, the normal, good, bacteria that live in your body can be replaced by a pathogen, which will make you sick.
Does bacteria breathe through stomata?
No, bacteria do not have stomata. Stomata are microscopic pores found on the surface of plant leaves that allow for gas exchange, primarily water vapor and oxygen. Bacteria typically obtain the oxygen they need for respiration directly from their environment.
How can you preserve pickles and jams from bacteria?
Pickles and jams can be preserved from bacteria by using proper canning methods, such as hot water bath canning or pressure canning. Ensure jars are sterilized, process for the appropriate amount of time, and store in a cool, dark place. Adding vinegar or sugar can also help inhibit bacterial growth.
Why does stress heighten vulnerability to bacterial and viral infections?
Stress can weaken the immune system, making it less efficient at fighting off invading bacteria and viruses. Chronic stress can lead to prolonged release of stress hormones, which can suppress the immune response and create an environment in the body that is more susceptible to infections. Additionally, stress may also impact behaviors like poor sleep, unhealthy eating habits, and lack of exercise, which can further weaken the immune system.
What is the scientific name for vibrio?
Vibrio is a genus of Gram-negative bacteria with many known species.
What is the common illnesses and infections caused by bacteria viruses fungi and parasites?
Common illnesses caused by bacteria include strep throat, urinary tract infections, and pneumonia. Viruses can cause the common cold, influenza, and gastroenteritis. Fungal infections can result in athlete's foot, yeast infections, and ringworm. Parasites can lead to malaria, toxoplasmosis, and giardiasis.
Why is catalase test performed on enterococcus faecium?
The catalase test is performed on Enterococcus faecium to differentiate it from certain other bacteria such as Staphylococcus species, which are catalase-positive. Enterococcus faecium is catalase-negative, meaning it does not produce the enzyme catalase, which helps in the identification of the bacteria.
What is the most common injury done to a victim of salmonella bacteria?
In my opinion i would say Chicken. If Chicken has been left out uncovered for too long then cooked or if it is not cooked correctly. I think this can be a cause! Correct me please if i am wrong!
Is there bacteria in a unspoiled cheese?
Yes, there are bacteria present in all types of cheese, including unspoiled cheese. These bacteria are crucial in the fermentation process that helps develop the flavor and texture of the cheese. However, in unspoiled cheese, these bacteria are carefully controlled to ensure they are beneficial and safe to consume.
How do you remove pathogenic bacteria from a wastewater treatment plant?
Just beyond the visible light spectrum is a band of electromagnetic radiation commonly called ultra-violet (UV) light. When ultraviolet radiation is absorbed by the cells of microorganisms, it damages the genetic material in such a way that the organisms are no longer able to grow or reproduce, thus ultimately killing them. This ability of UV radiation to disinfect water has been understood for almost a century, but technological difficulties and high energy costs prevented widespread use of UV systems for disinfection. Today, however, with growing concern about the safety aspects of handling chlorine and the possible health effects of chlorination by-products, UV disinfection is gaining in popularity. Technological advances are being made and a growing number of manufactures now produce UV disinfection systems for a variety water and wastewater applications. As operating experience with installed systems increases, UV disinfection is expected to become the practical alternative to the use of chlorination at many municipal water treatment plants.
What enables an organism to grow at high osmotic pressure?
Organisms that can grow in high osmotic pressure environments typically have adaptations such as osmoregulation mechanisms that help maintain internal water balance, along with specialized cell walls or membranes that can withstand the pressure. These adaptations allow the organism to prevent excessive water loss and maintain structural integrity, enabling growth in high osmotic pressure conditions.
What helps filter bacteria and infection?
The immune system plays a crucial role in filtering bacteria and fighting infection by producing specialized cells and proteins to recognize and destroy pathogens. Physical barriers like skin and mucous membranes also help prevent bacteria from entering the body. Additionally, beneficial bacteria in the gut and other parts of the body can compete with harmful bacteria, providing a level of protection.
Why mueller Hinton agar used instead of TSA?
Mueller Hinton agar is used for antibiotic susceptibility testing because it has a consistent pH and low calcium and magnesium content, reducing the likelihood of interference with the antibiotics being tested. TSA (tryptic soy agar) may contain higher levels of these elements and can affect the results of antibiotic susceptibility testing.
What happens if you drop a piece of jelly with bacteria into boiling water?
The boiling water will likely kill the bacteria on the jelly due to the high temperature. However, it is important to note that boiling water may not kill all types of bacteria and viruses, so caution should still be taken when handling contaminated items.
Is capsulated bacteria are virulent or non virulent?
Capsulated bacteria are usually more virulent compared to non-capsulated bacteria. The presence of a capsule helps the bacteria evade the host's immune system and promotes its ability to cause disease. Capsules can provide protection against phagocytosis, making the bacteria more likely to establish an infection.