Why do some bacteria grow in the presence of salts?

Q: How does E coli grow in liquid medium?

A: The liquid medium is used to grow the bacteria culture in the test tube and also it will involve the…

Q: What is faculative anaerobe and aerotolerant anaerobe?

A: Prokaryotic organisms require different environmental conditions for their survival. Some…

Q: What is the turgid in the water?

A: Osmosis is the process by which the solute molecules are transported from higher concentration to…

Q: List the different type of bacteria depending on the salt concentration required for their growth?…

A: Halophiles are found in  three domains -Inside the Bacteria  halophiles depend on salt concentration…

Q: How can we make soap?

A: Soaps are the salts of fatty acids. Soaps are generally used as surfactants for washing cloths,…

Q: How do cyanobacteria survive freezing and desiccation?

A: Cyanobacteria or blue-green algae are gram-positive, photosynthetic prokaryotes. They are one of the…

Q: What are non-ionic detergents?

A: Detergents are cleansing agents and commonly made from synthetic resources such as petroleum…

Q: Microbes are found mostly in topsoil, but some are found miles deep in bedrock. Nutritionally, how…

A: Microbes or microorganisms are single-cell organisms that can be observed by using a microscope.…

Q: Why are microorganisms called extremophiles?

A: Microorganisms are simplest form of organisms that cannot be seen by the unaided eye and are present…

Q: What is the pH of a 0.40 M ammonia solution?

A: Ammonia, NH3, is a colorless gas having a distinct odor. It has of nitrogen and hydrogen atoms, made…

Q: what does it mean if a bacteria tested negative for citrate

A: Citrate Utilisation Test It is used to determine the ability of an organism to utilize citrate as a…

Q: What is aquaporins ? Why it is used ?

A: Answer- There are many intergral proteins that are embedded in the plasma membrane.

Q: What are the pharmaceutical use of Hypotonic solution?

A: Hypotonic solution: When compared to another solution, this one has a lower osmotic concentration…

Q: Why would hydrogen peroxide be an effective disinfectant?

A: We have to answer why hydrogen peroxide can be an effective disinfectant.

Q: why do microorganisms differ in their response to disinfectants

A: Microorganisms are the minute microscopic organism that is generally invisible to the human eye.…

Q: Why are proteins and amino acids considered to be natural buffers?

A: Buffer is a solution that resists the pH change when an acid or base is added to it. pH is measured…

Q: Why efficascent oil is green liquid?

A: Efficascent oil is a liniment for the treating pains associated with muscles and joints. It is…

Q: What is activated sludge?

A: Activated sludge is the method which is used to stabilise the wastewater having organic Constituents…

Q: The following are major free radical scavengers except: A Superoxide dismutase B Catalase C…

A: Free radicals are generated in the body due to inflammation, radiation, oxygen toxicity, reperfusion…

Q: An obligate halophile is an organism that requires high osmotic pressure.True or false?

A: Osmotic pressure refers to the minimum pressure that is required to stop the occurrence of osmosis…

Q: What are the effects of buffer solutions and what is its importance to life processes?

A: A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate…

Q: What is the difference between an antiseptic and a disinfectant? Can the same chemical be used for…

A: Antiseptic Disinfectant 1.       These can slow down the growth as well as can kill the…

Q: How does a halophile maintain positive waterbalance while growing in a solution high in NaCl?

A: The term halophile comes from a Greek word salt loving. Halophiles are extremophilic organisms that…

Q: Why are most antimicrobial chemical agents disinfectants rather than sterilants? What general…

A: Most chemical antimicrobial agents are disinfectants instead of sterilants. A disinfectant reduces…

Q: What is a microaerophile?

A: Prokaryotes require different environmental conditions for their survival. Some prokaryotes survive…

Q: What is the source of the purple color from which the purplesulfur bacteria get their name?

A: Bacteria are prokaryotic organisms. They are devoid of the cellular organelles like the golgi bodies…

Q: how it is possible for certain microbes to survive and grow in the presence of cyanide, which would…

A: Cyanides are rapidly acting toxins that can be lethal. The working mechanism of cyanide involves its…

Q: Why does the bacterial oxidation of sulfur result in a pH drop?

A: Bacteria are the prokaryotic microorganisms that are diverse in its existence. The different types…

Q: Which of the following statements is true of chemoautotrophs?

A: Chemoautotrophs are able to synthesize their own organic molecules from the fixation of carbon…

Q: Why must alcohol be diluted with water to about 70 % percent before it could be used as an effective…

A: 70% isopropyl alcohol is most commonly used as disinfectant and killing all surface microorganisms.…

Q: Why do most iron-oxidizing bacteria grow at anacidic pH?

A: Iron-oxidizing bacteria are those chemotropic bacteria that obtain the energy for their living and…

Q: What is the limit to growth at low pH?

A: As we know growth is being affected by many external and internal conditions. Out of those few are…

Q: Why are emulsions important in food preparation?

A: Emulsion is a solution formed by the mixing of two immiscible liquids. An emulsifier helps to…

Q: What is the effect of pH in the shelf life of unsterilized media? [Answer in not more than 2…

A: The shelf life of unsterilized media will decrease due to the pH.

Q: What medical challenges do biofilms present?

A: Biofilms are microbial colonies that are linked to one another and enclosed in an exo-polysaccharide…

Q: What effect does the water temperature have on solution rate

A: There are many factors which influence the rate at which a solute will dissolve in a solvent…

Q: In terms of pH, what class of organism is the bacteriumEscherichia coli?

A: E. coli is a gram-negative bacteria that is also a well-studied coliform. All microorganisms have a…

Q: Why are microorganisms present in the bodies of water?

A: Microorganisms present in water use the water to take in food and to remove unwanted waste products.…

Q: What type of media components cannot be sterilized in an autoclave?

A: Sterilization refers to the complete destruction or elimination of all viable organisms. The process…

Q: Why can alcohol kill bacteria? Explain via proteins.

A: Alcohol kills bacteria through The process called as denaturation. Denaturation takes place when…

Q: What are detergents?

A: Introduction:- Detergents are amphipathic compounds with charged hydrophilic or polar groups at the…

Q: Why does honey stay at room temperature for months/years without "spoiling" or being affected by…

A: SPOILAGE- Mostly contamination comes from external sources during bleeding, handling, and at the…

Q: In what type of cell, gram-positive or gram-negative, would you find lipopolysaccharide in its cell…

A: Bacteria are members of a large group of unicellular microorganisms. Bacteria have cell walls but…