Aspergillus fumigatus and Pseudomonas aeruginosa are central fungal and bacterial members of the pulmonary microbiota. What type of mold is Aspergillus? Aspergillus lives in the environment Aspergillus, the mold (a type of fungus) that causes aspergillosis, is very common both indoors and outdoors, so most people breathe in fungal sporesRead More →
In the real world, with its limited resources, exponential growth cannot continue indefinitely. Exponential growth may occur in environments where there are few individuals and plentiful resources, but when the number of individuals becomes large enough, resources will be depleted, slowing the growth rate. What increases the rate of bacterialRead More →
Fact: Bacteria that causes food-borne illness can be destroyed by exposing it to high temperatures during the cooking process. The same can be said of some other microorganisms, too. Does bacteria die at 32 degrees? Cold weather restricts the growth of bacteria. At 32 degrees Fahrenheit or lower, you willRead More →
Phagocytes (neutrophils and monocytes) are immune cells that play a critical role in both the early and late stages of immune responses. Their main role is to circulate and migrate through tissues to ingest and destroy both microbes and cellular debris. What happens to bacteria during phagocytosis? Once inside theRead More →
Certain types of fish (as described above) that produce histamine. Transmission is by ingestion of histamine-containing food, typically fish. Scombroid poisoning is not communicable from person to person. How is scombroid fish poisoning spread? Scombroid poisoning typically occurs when people eat certain fish that have been inadequately preserved. These includeRead More →
Nitrogen-fixing bacteria examples comprise Rhizobium (formerly Agrobacterium), Frankia, Azospirillum, Azoarcus, Herbaspirillum, Cyanobacteria, Rhodobacter, Klebsiella, etc. N-fixing bacteria synthesize the unique nitrogenase enzyme responsible for N fixation. Are nitrates bacteria? The bacteria species in soil that convert nitrites to nitrates all belong to the genus Nitrobacter. There are four identified species:Read More →
Coccus form:- These are spherical bacteria. … Bacillus form:- These are rod-shaped bacteria. … Spirilla form:- These are spiral-shaped bacteria that occur singly. Vibrio form:- These are comma-shaped bacteria. What are 5 examples of bacteria? Here are seven types of bacteria to be concerned about as you fill up yourRead More →
Gastro is an infection that has a number of causes. It can be caused by bacteria (such as salmonella), which is found in undercooked chicken or food left unrefrigerated for too long. However it is more commonly caused by viruses, such as rotavirus and norovirus (pictured). What is a gastroRead More →
Working bacterial stocks can be streaked onto agar plates and stored at 4°C for daily or weekly use. Culture dishes should be wrapped with laboratory sealing film (plastic or paraffin) and stored upside down (agar side up) to minimize contamination and to keep both the culture and agar properly hydrated.Read More →
Vancomycin inhibits cell-wall synthesis in Gram-positive bacteria, but is generally ineffective against Gram-negative bacteria and unable to penetrate the outer membrane barrier. What does vancomycin work against? Vancomycin is typically used for suspected or known Staphylococcus aureus (Staph) infections. It is also active against a variety of other common gram-positiveRead More →