Bacteria

The presence of certain genetic and molecular features, such as introns, histones, and similarities in the RNA polymerase structure, suggest a closer evolutionary relationship between archaea and eukaryotes. Additionally, comparative genomics studies have shown that archaea share more genes and metabolic pathways with eukaryotes than with bacteria. This evidence supports the hypothesis that archaea and eukaryotes share a common ancestry.

One method to count the number of bacteria in a sample of water is through serial dilution and plating. The sample is diluted multiple times and then spread onto agar plates, allowing individual colonies to grow. The number of colonies formed can then be counted to estimate the original bacterial count.

sunlight, carbon dioxide and water. photoheterotrophs need sunlight but cannot use carbon dioxide and chemoautotrophs need CO2 but not sunlight and chemoheterotrophs need neither sunlight nor CO2.

Factors that help a log decompose include moisture, microbes like bacteria and fungi, insects, and environmental conditions like temperature and oxygen availability. These factors break down the organic matter in the log, converting it into simpler compounds and releasing nutrients back into the ecosystem.

Beneficial bacteria assist in the breakdown and absorption of food. For example, bacteria in the large intestine use undigested material to make vitamins, such as vitamin K. Vitamin K helps your blood to clot.

A sample can be taken from the boil using a sterile swab or syringe and sent to a laboratory for culture and sensitivity testing. This will help identify the causative organism and determine if it is pathogenic by observing its growth characteristics and conducting susceptibility tests to see which antibiotics can effectively treat it. Treatment can then be tailored based on the results of these tests.

Some bacteria are metabolically active in hot springs because they have adapted to survive and thrive in extreme temperatures. These bacteria have enzymes and metabolic pathways that are stable at high temperatures, allowing them to carry out processes like photosynthesis or chemosynthesis even in these harsh conditions.

Bacteria are considered part of the fauna kingdom, as they are living organisms that are classified as prokaryotes. They are not considered part of the flora kingdom, which typically includes plants and plant-like organisms.

* ALWAYS carry and use a sanitizer with you to prevent infections.

*Never eat food, suck thumb after touching anything

* spray some anti bacterial stuff, it helps kill the bacteria.

* clean your home often to prevent diseases.

Hope this helped

Neha Gupta

Pfiesteria is a genus of heterotrophic dinoflagellates, not bacteria, known for producing toxins that can harm fish and other marine life. These toxins can cause fish kills and have been linked to health issues in humans who come into contact with contaminated waters.

Bacteria never have a nucleus. They are prokaryotic organisms, meaning they lack a membrane-bound nucleus that houses their genetic material. Instead, their genetic material floats freely in the cytoplasm.

to grow yeast needs to respire it can only respire without air for a short period of time therefore this is not ideal for growth so it needs to be moist have a supply of oxygen and be quite warm it should be slightly acidic aswell if you are talking about fermentation the same conditions but it does not need oxygen otherwise no alcohol will form

Yes, it is also called staff infection. Anytime you come in contact with staff infection, or anything that is , or has come in contact with staff infection, you should wash with lots of soap and water. Staff infection is contagious and can spread. If not treated, it cause death!

well bacterias tend to go into a life cycle that describe their characteristic, the first part of the bacteria life cycle is something called a lag in-which the bacteria stay stationary and observe it environment, 2nd is the logarithmic exponential, in the logarithmic exp. the bacteria start using resources available to it and multiply it self- this is called (mitosis) and as it does that, it accumulates waste, and as the waste accumulates and as the bacteria resources isn't increasing it reaches the stationary phase were it just stay alive without much growth and eventually it decline and reaches the death phase and die.

so if you try to describe their characteristic you should say they observe their surroundings, and use all the resources available to it to multiply it self. It also tend to release waste, and try to maintain it self from dying.

Bacteria are one of the oldest and most abundant forms of life on Earth. They have adapted to a wide range of environments and play essential roles in various ecosystems. Their diverse metabolic capabilities and genetic diversity contribute to their classification as two of the three domains of life.

Acrylic nails can harbor bacteria and may pose a risk when caring for a newborn, as bacteria can be transferred from the nails to the baby. It is recommended to keep nails short and clean, and to practice good hand hygiene, especially before handling a newborn. Consider removing the acrylic nails to reduce the risk of bacterial transmission.

Bacillus subtilis is a facultative anaerobe, meaning it can grow in the presence or absence of oxygen.

Pseudomonas has capsule.The Pseudomonas aeruginosa capsule, composed of polysaccharide alginate, is an important Pseudomonas virulence factor encountered primarily in cystic fibrosis.(http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=209741)

Salmonella is a genus of rod-shaped, Gram-negative bacteria that belongs to the domain Bacteria. Monera is an older taxonomic grouping that is no longer used, as bacteria are now classified in multiple phyla within the domain Bacteria.

Yes, bacteria can make lipids with short or long fatty acid tails depending on the temperature. Longer tails mean more van der waals interactions which restricts movement so when temperature drops they have an enzyme that cuts the length of the tails to increase fluidity. Other bacteria can make more unsaturated tails that have a double bond which causes a kink in the fatty acid, the unsaturated lipids can't pack together as tight which again increase fluidity in the membrane.

Bacteria do not have a nucleus or membrane-bound organelles such as mitochondria or chloroplasts. They also do not have a true cell wall made of cellulose like plant cells.

They reproduce by Process called BINARY FISSION

Binary fission begins with DNA replication. DNA replication starts from an origin of replication, which opens up into a replication bubble (note: prokaryotic DNA replication usually has only 1 origin of replication, whereas eukaryotes have multiple origins of replication). The replication bubble separates the DNA double strand, each strand acts as template for synthesis of a daughter strand by semiconservative replication, until the entire prokaryotic DNA is duplicated.

After this replicational process, cell growth occurs.

Each circular DNA strand then attaches to the cell membrane. The cell elongates, causing the two chromosomes to separate.

Cell division in bacteria is controlled by the FtsZ, a collection of about a dozen proteins that collect around the site of division. There, they direct assembly of the division septum. The cell wall and plasma membrane starts growing transversely from near the middle of the dividing cell. This separates the parent cell into two nearly equal daughter cells, each having a nuclear body.

The cell membrane then invaginates (grows inwards) and splits the cell into two daughter cells, separated by a newly grown cell plate.

Helicobacter pylori (H. pylori) is a bacteria found in the inner lining of the stomach and/or duodenum, that causes chronic inflammation. H. pylori has been associated with several health conditions, and is known to be the strongest potential risk factor for gastric cancer. It is estimated that 20-30% of the adult population in the United States is infected with the bacteria. You can learn more by visiting www.helicobacterpyloritest.com

When a virus or bacteria enters the body, it can damage cells and tissues through various mechanisms. Viruses invade host cells, hijack their machinery to replicate, and sometimes cause cell death. Bacteria can release toxins that harm host cells or trigger an immune response leading to inflammation and tissue damage. Both can result in symptoms like fever, cough, fatigue, and more severe consequences depending on the extent of damage.

A slime capsule in a bacterial cell provides protection against desiccation (drying out), phagocytosis by immune cells, and chemical attack. It also helps the bacteria adhere to surfaces and form biofilms.