Explain why surfactant chemicals are more effective against gramnegativebacteria than against gram-positive bacteria.

Q: 2. Diagram (draw) how biofilms forms on the surface of an indwelling device. Explain how biofilms…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: compare the mechanisms of microbial death by dry and moist heat.   give 3 factors that would affect…

A: Sterilization is characterized by any process that removes, eliminates, deactivates or kills all…

Q: explain that  Staphylococcus aureus is gram positive

A: Staining : It is  a biochemical technique of coloring specimens. To stain these specimens dyes are…

Q: Why is Hydrogen peroxide solution so effective against anaerobes?

A: Hydrogen peroxide is a chemical compound that is acts as mild antiseptic. It is also an endogenous…

Q: Describe the basic process of biofilm formation.

A: Biofilm refers to the collective growth of microorganisms on different surfaces. The microorganisms…

Q: Explain whether the MacConkey agar plate inoculated with good water would show the presence of…

A: Water contamination is the presence of unwelcome particles in the water. Water bodies may become…

Q: EXPLAIN WHY STAPHYLOCOCUS AUREUS IS GRAM POSITIVE

A:

Q: Define pH, acidophile, neutrophile, and alkaliphile.

A: Answer: Introduction: pH scale has impact on the presence and distribution of microbes.

Q: Describe the term resistance and biofilm related to microbiology.

A: The ecosystem is composed of species such as plants, animals, and microbes. Microorganisms, which…

Q: When innoculate the bacteria noticed yellow colonies, is that staphylococcus aureus or…

A: It is required to identify the yellow colonies seen after inoculation of the bacteria is…

Q: Why mightproteorhodopsin make a bacterium such as Pelagibacter morecompetitive in its habitat?

A: Proteorhodopsin(pRhodopsin) is a family of transmembrane proteins which is the most abundant retinal…

Q: explain

A: The beta hemolytic bacteria are the bacterias that causes complete hemolysis of the RBC in the blood…

Q: What factors influence the appearance of microbial colony

A: Microbial colony can be defined as the visible mass  of microbes like fungi ,bacteria etc on a…

Q: For which diseases can one not rely upon chlorination of water as a method of control? Explain why…

A: Thyroid disease has been practically eliminated by using the chlorination of water. The treatment of…

Q: Which bacterium does not have the genetic machinery to convert nitrate to nitrite? O A. Paracoccus O…

A: Which bacterium does not have the genetic machinery to convert nitrate to nitrite?  A. ParacoccusB.…

Q: Write down two differences between bioaccumulation and Efflux pump mediated heavy metal removal by…

A: Metals that are relatively dense are heavy metals and even the presence of the slightest…

Q: Do you think scientists working at Pitch Lake were at a great risk ofinfection from the organisms…

A: Pitch lake located on the Caribbean island of Trinidad and Tobago. It is a poisonous, toxic,…

Q: Explain the purpose and phase where cells lose flagella and motility in biofilm formation, and why…

A: There are several steps associated with the biofilm formation. The first step includes adherence of…

Q: On what medium is the membrane filter incubated? Describe the appearance of coliforms on this…

A: Membrane filter technique is used for the enumeration as well as isolation of microbes in the water…

Q: Briefly explain the shake-tube inoculation

A: Inoculation is the key process in the microbiology in which inoculum is extracted.

Q: Explain why a population of microbes does not die instantaneouslywhen exposed to an antimicrobial…

A: Antimicrobial agents are agents that are used to stop or prevent the growth of microbes. They…

Q: what are psychrotolerant bacteria and examples of it.

A: Psychrotolerant bacteria Psychrotolerant bacteria, or those that can grow at temperatures below…

Q: Describe a microbial biofilm. Discuss why it is likely that a biofilm contains bacteria with…

A: The unicellular, microscopic organisms that cannot be visualized by the naked eye are known as…

Q: Which of the letter labeled microbes is exhibiting alpha-hemolysis?

A: The lysis or breakdown of red blood cells is called hemolysis. There are three types of hemolysis…

Q: explain how the use of an Eosin methylene blue agar plate can help determine the type of fermenters…

A: Eosin methylene blue agar (EMB) is a selective and differential media.

Q: Think of three situations in which the same microbe would beconsidered a serious contaminant in one…

A: Microbe or microorganism is a microscopic organism. Microorganisms can be fungi, bacteria, protists,…

Q: Indicate which are the laboratory conditions necessary to cultivate Clostridium bacteria in medium,…

A: A significant human pathogen that is a causative agent for many diseases like botulism, tetanus,…

Q: Example of psychrotrophic bacteria includes:

A: Psychrotrophic bacteria are those bacteria which can grows at 7°C although their optimal growth…

Q: Why is identification of bacterium's growth patterns in broth important.

A: The question asks to determine the importance of broth in the identification of a bacterium.

Q: How does the biofilm growth mode differ from that ofplanktonic cells? Which growth mode better…

A: Biofilm basically refers to the matrix like a thing that helps the cells to stick to one another. It…

Q: Some antibiotics show no zone of inhibition against the microbe. How is this possible? Explain how…

A: Zone of inhibition The Zone of inhibition, it is a area around  the antibiotic drug which inhibit…

Q: Identify an acellular infectious agent that is studied in microbiology.

A: Microbiology is the study of various organisms viewed under a microscope, such as bacteria, viruses,…

Q: On what basis were both Shigella and Salmonella eliminated aspossible causes of the outbreak…

A: Shigella and Salmonella are pathogens that cause gastroenteropathy in humans. They are two genera…

Q: Explain why it is important to wash the wells with PBS between the additions of each reagent?

A: ELISA is a enzyme linked immunosorbent eassay. It is a process to get the measurements of antigens…

Q: Under what conditions is sterilization by filtration preferred over sterilization by heat

A: Filteration is the sterilization process wherein there is the physical removal of micro-organisms…

Q: describe how the pure culture of mycobacterium ulcerans should be inoculated with the culture

A: The Buruli ulcer (BU) is a necrotizing and weakening cutaneous contamination which is caused by…

Q: Explain how microbial agents A through D in the following diagram compare in effectiveness against…

A: It is used to determine the susceptibility of a given test organism (clinical) against a range of…

Q: Explain the formation of biofilm.

A: Certain microorganisms are capable of producing extracellular polymers that forms a matrix to which…

Q: Why would a psychrophile not be a human pathogen?

A: Microbes are classified according to the temperature range at which they can grow. The development…

Q: How is UV radiation a good type of control mechanism against microbial growth? Explain what happens…

A: UV-C is most commonly used to kill microbes. However UV of different wavelength can show different…

Q: Describe the appearance of coliforms on Levine EMB agar.

A: Coliform bacteria are found in a diverse range of places like waste products of animals, water…

Q: explain how bacteria can develop resistance to chemical disinfectants

A: Biocide resistance to biocides is bought about by Intrinsic resistance or (intrinsic…

Q: After the mordant has been added, Gram-positive organisms are stained __________ and Gram-negative…

A: Gram staining is a staining technique used to differentiate two large groups of bacteria based on…

Q: Would you expect to find the same typesof microorganisms associated with black smokerand carbonate…

A: Microorganisms can be defined as the  microbes  that are microscopic organisms  and present in the…

Microbial Isolation

Isolation of the microorganisms in microbiology is the process of developing a pure culture by separating one species of microbe from a mixture of many other species. A pure culture is a culture that contains only one species of microbe.