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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

A bacteriostatic agent inhibits the growth of bacteria and fungi?

Yes, a bacteriostatic agent works by preventing the growth and reproduction of bacteria and fungi without directly killing them. This allows the immune system or other drugs to eliminate the pathogens from the body.

What are the differences between bacteria viruses fungi and parasites?

Viruses are coated genetic material that invade cells and use the cell's apparatus for reproduction.

Bacteria are single celled organisms. Some classify them as a separate (fourth) kingdom on the tree of life.

Fungi are multi-celled organisms that form a third Kingdom of life, along with the plant kingdom and the animal kingdom.

Parasites are plants or animals that derive benefit from the metabolism of other plants or animals at the expense of the host and without providing some benefit to the host in return.

What is a basic dye?

Basic dyes are a type of dye that are positively charged and primarily used to stain acidic components in cells and tissues in biological samples for microscopic examination. They have a strong affinity for structures that are negatively charged, such as nucleic acids and proteins, making them useful for visualizing these components under a microscope.

Does ginger kill bacteria?

Yes, ginger has many health benefits. It is said that it helps kill some bacteria, ex. it is often eaten with sushi either in condiment form or whole in order to prevent illness from harmful bacteria from the raw fish.

What would happen if a single cell pathogen entered a culture dish?

If a single cell pathogen entered a culture dish, it may replicate and grow rapidly if conditions are favorable for its growth. This could lead to contamination of the culture dish, affecting the growth of the intended cells and potentially compromising experimental results. Containment and proper sterilization protocols are important to prevent such contamination.

How are bacteria unhelpful?

Bacteria can be unhelpful when they cause infections in the body, leading to illnesses. Some bacteria can also contaminate food and water, causing food poisoning. Additionally, certain types of bacteria can damage surfaces, equipment, and infrastructure, leading to deterioration and decay.

Which bacterium is most important from commercial point of view?

One of the most important bacteria from a commercial point of view is Escherichia coli. It is widely used in biotechnology, food production, and genetic engineering. Other important bacteria include Bacillus subtilis and Saccharomyces cerevisiae, which are used in various industrial processes.

What does the bacteria cell do in a body?

Bacteria cells can have both positive and negative effects on the body. Some are beneficial and support functions like digestion, while others can cause infections and illnesses. In the body, bacteria cells can help in breaking down food, assisting in nutrient absorption, and supporting the immune system.

What is the name of the process when a person is immunised against a disease by injecting them with an inactive form of a pathogen?

The process is called vaccination. It involves injecting a person with a harmless form of a pathogen, such as a dead or weakened virus or bacteria, to stimulate the immune system to produce an immune response without causing the disease.

What break down dead plant and animal matter?

Decomposers, such as bacteria, fungi, and some insects, break down dead plant and animal matter by feeding on them and breaking them down into simpler compounds. This decomposition process recycles nutrients back into the ecosystem for other organisms to use.

What are 3 foods made with bacteria?

  1. Yogurt: made by fermenting milk with bacterial cultures like Lactobacillus bulgaricus and Streptococcus thermophilus.
  2. Cheese: certain types like cheddar, gouda, and brie are made by adding bacterial cultures to milk to aid in fermentation and flavor development.
  3. Kimchi: a traditional Korean side dish made from fermented vegetables like cabbage, radish, and seasonings with the help of lactic acid bacteria.

What kind of energy does bacteria and fungi help transform?

Bacteria and fungi help transform organic matter into energy by breaking down complex molecules into simpler compounds through processes like decomposition. This process releases nutrients and energy that can be used by other organisms in the ecosystem.

Is the rod shaped bacteria good bacteria or bad bacteria?

No such thing as "bad bacteria" and "good bacteria" because they are all one and the same (though not literally) and can be affected by the same thing if the "bad" bacteria is targeted. A rod-shaped bacterium can be any bacterial species, "good" or "bad."

What is the incubation temperature for candida albicans?

The optimal incubation temperature for Candida albicans is typically around 37°C (98.6°F), which is body temperature for humans. This temperature allows for the growth and proliferation of the yeast fungus.

What was the significance of Frederick Griffith's experiments with Streptococcus pneumoniae?

Frederick Griffith's experiments demonstrated the phenomenon of bacterial transformation, showing that genetic material can be transferred between bacteria. This discovery laid the foundation for understanding DNA as the genetic material and the mechanism of bacterial virulence. It also played a key role in the development of molecular biology.

How can bacteria survive in almost all environments?

Bacteria are highly adaptable and can survive in diverse environments due to their ability to develop unique metabolic pathways, resistance mechanisms, and dormancy strategies. They can withstand extreme temperatures, pH levels, salinity, and pressure, allowing them to thrive in various habitats such as deep sea vents, hot springs, polar regions, and acidic environments. Additionally, their rapid growth rate and genetic variability enable them to quickly evolve and respond to changing conditions.

What barriers stop cholera?

Barriers that can help stop the spread of cholera include improved access to clean water and sanitation facilities, effective hygiene practices, timely detection and treatment of cases, and vaccination. Community education and awareness campaigns also play a crucial role in preventing and controlling cholera outbreaks.

Which antimicrobial agents is the most toxic to humans?

One of the most toxic antimicrobial agents to humans is colistin. It is known for its potential to cause renal toxicity and neurotoxicity, particularly when administered in high doses. It is reserved for use in serious infections due to its potential side effects.

What does tntc in micro biology stand for?

"TNTC" in microbiology stands for "too numerous to count." It is used when a sample has a very high number of microorganisms or cells, making it impossible to accurately quantify them individually.

What can bacteria be on?

Bacteria can be on everything especially things that are nasty cause it is like their home basically BUT some other bacteria are good they are in your body helping things out and basically helping around in your body :p

Does something have to be dirty to have bacteria on it?

No, bacteria can be present on surfaces that appear clean. Bacteria can be found virtually everywhere, including on surfaces that may not look dirty. Regular cleaning and disinfecting can help reduce the presence of bacteria on surfaces.

Do the salinity of the skin protection from bacteria?

Yes, the salinity of the skin can help protect against certain types of bacteria. The salt on the skin creates an environment that is not ideal for bacterial growth, helping to prevent infections. However, it's not the only factor involved in skin protection, as the skin also has other defense mechanisms such as its acidic pH and beneficial bacteria.

Can ammonia kill bacteria?

Yes, ammonia is a disinfectant that can effectively kill bacteria when used in appropriate concentrations. It disrupts the cell membrane and protein structure of the bacteria, ultimately leading to their destruction. However, it is important to use ammonia carefully as it can be harmful if ingested or inhaled at high concentrations.

Why is catalase necessary for survival of aerobic microbes and what does it do?

The enzyme, catalase, is produced by bacteria that respire using oxygen, and protects them from the toxic by-products of oxygen metabolism.