End products of biochemical reactions are sometimes gases. How are these gases detected in liquid broth cultures? How are gases detected in agar slants?

Q: Isolating a pure culture from a mix sample is typically done on solid agar but can be performed…

A: A microbial culture is a method of multiplying microbial organisms by letting them reproduce in…

Q: What are the 2 most important reasons for using a positive control in Microbiology tests? What are…

A: A control test is used to set a reference for comparison in microbiological tests. It helps the…

Q: What is sterilization? Give specific examples of media which are sterilized by the following…

A: All microbes, such as bacteria, virus, and fungi, requires some essential nutrients for growth. The…

Q: In treating an oil spill, why might biostimulation be preferred over bioaugmentation?

A: Bioremediation is a technique that involves the usage of microbial metabolism in presence of…

Q: In a fed-batch culture operating with intermittent addition of lactose solution, values ofthe…

A: Note: As per Bartleby Guidelines For Remaining Answers Please Repost The Question. Introduction:  A…

Q: Need help  Can a pure culture be prepared from a mixed culture in a broth or plate? Explain.

A: INTRODUCTION How to make a pure culture from mixed culture is explained below.

Q: How to culture the media of L. bulgaricus and S. thermophiles properly by using aseptic technique?

A: For the culture of L. bulgaricus and S. thermophiles RCA (Reinforced clostridial) agar and ST…

Q: Why would the following medium not be considereda chemically defined medium: glucose, 5 grams…

A: A chemically defined media is a medium that has all the ingredients of known quantities.…

Q: why it is useful to plot the microbial growth from a growing microbial culture?

A: The term microbial growth refers to the growth of a population of microbe, it is an increase in the…

Q: microbiology: Aseptic Culture Techniques Lab Explain why a loop or needle is flamed before it is…

A: The process of introducing a microorganism in a plate or a tube containing culture media is called…

Q: Explain about different types of bioreactors and how they are used in cell suspension culture. What…

A: Ans: Bioreactor It refers to any device that supports the biological environment. This is used for…

Q: how can ultraviolet  be used to control microbial growth. which specific UV can be used to control…

A: Ultraviolet (UV) - non-ionizing radiation. - penetration power is less. - It is a physical mutagen.

Q: how many bacteria/ml of the diluted broth would be present on average

A: 37 bacteria/ml of the diluted broth would be present on average.

Q: What are the different types of fermentation pathways and how can they be used to differentiate…

A: Fermentation is the process of conversion of complex molecules into simpler form under anaerobic…

Q: What are bioreactors ? How are large volume of culture maintained and processed in them ?

A: A bioreactor is a system that enables organisms (such as yeast, bacteria, or animal cells) to…

Q: Under what conditions are media typically sterilized in an autoclave?

A: An autoclave is the pressure chamber used to carry out the scientific and industrial processes…

Q: Why is the batch bioreactor is suitable in milk fermentation?

A: Batch bioreactor is a closed system and  the process lasts until the nutrients are consumed.

Q: A researcher is planning to plant antibiotic-resistant Escherichia coli pure bacteria sample in…

A: Culturing the bacteria on a solid media involves several steps in which the major step is…

Q: Why differential centrifugation have poor yield, poor resolution and the fact that preparations…

A: The technique that involves centrifugal forces and aids in the separation of contents of any mixture…

Q: How would the pH of the culture medium be influenced by sugar fermentation? By urea hydrolysis?

A: Microorganisms grow well at their optimal pH. The concentration of hydrogen ion affects the growth…

Q: What do you think the reason behind using acidophilic and thermophilic bacteria in the bioleaching…

A: Bioleaching is a process that is used in metallurgy to leach out or to obtain valuable metals from…

Q: give one reason why is it necessary to keep stirring the agar medium mixture in a beaker when…

A: Agar is a heteropolysaccharide, which is composed of different carbohydrate units. Agar is obtained…

Q: Which of these bacterial characteristics could be evaluated with one of the rapid identification…

A: Arabinose Fermentation Test is used to determine the if the microbes can ferment the carbohydrate…

Q: What makes agar good support for microbial growth?

A: Microbial culture is a method of multiplying microbial organisms by letting them reproduce in…

Q: placing bacteria at ultracold temperatures is as effective at killing microbes as the use of dry…

A: true

Q: If you have a 15 mg/100 ml stock solution of GA3 and you need a 1 mg GA3 in 25 ml, how much stock…

A: Given: volume of stock solution is 15 mg/100 ml Needed amount is 1 mg kinetin in 25 ml Volume of…

Q: Describe how to most easily calculate the generation time for a population of bacteria in a batch…

A: Bacteria grow when one bacterial cell divides to form two daughter cells. Thus, bacterial growth can…

Q: determination of microbial motility, why do you think the microorganisms are ubiquitous?

A: Solution : The motility test is used to determine whether an organism is motile or non-motile.…

Q: Which B. megaterium culture, a culture in the exponential growth phase or a culture in the…

A: Ultraviolet radiation is a short-wavelength, non-ionizing radiation, and its wavelength ranges from…

Q: Control of Microbial Growth A) Which would be the best process to use and why?  B) Can you use…

A: A. In the control of microbial growth, Heating is the best method for controlling microbial growth,…

Q: Agar is a solidifying agent used in media preparation.a. What is its origin? b. What makes it ideal…

A: A growth medium or culture medium is a gel or liquid designed to support microorganism growth. The…

Q: An autoclave is typically used for sterilization of media. a. Define sterilization. b. Under what…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: What is thermal death time? What are the factors that may influence the efficiency of chemical…

A: Answer 1 :- Thermal death time is the way lengthy it takes to kill a particular bacterium at a…

Q: What are the main types of immobilization techniques used in biosensors? (with a deep explanation)

A: Immobilization It is a technique that is used for the chemical and physical fixation of the…

Q: What reaction would you expect when performing a positive control in the oxidase assay? What would…

A: Oxidase assay is performed to test the presence of the cytochrome c oxidase enzyme in bacteria. A…

Q: How can you account different diffusion rates of three dyes through the agarose media in the Petri…

A: Agar is used as a support medium for bacterial growth and culture in labs.This is extracted from sea…

Q: What is the result of this biochemical test in the gelatin deep?  Which enzyme is this testing for?…

A: Gelatin Hydrolysis Test: Gelatin is a collagen-derived protein obtained from the connective tissues…

Q: What chemical ingredients make MSA differential? How (in your own words) do those chemical…

A: Introduction  A liquid medium known as enrichment media contains specific selective agents,…

Q: If a biotechnologist wishes to obtain a primary metabolite, they will harvest the organism/media…

A: Bacteria are omnipresent and are found in air, water, soil, etc. Each bacterial species has a unique…

Q: ar contains salt to prevent the growth of most microbes and mannitol plus a pH indicator to detect…

A: In order to produce and culture different types of microbial species, a culture media is required.…

Q: Please explain the differences between freeze drying,drum drying and air drying and which give a…

A: Freeze drying, drum drying, and air drying are dring methods to remove water content from the cell…

Q: What is diluent? Why is it useful for working with bacterial samples?

A: Dilution is done to decrease the concentration of the original sample that is being tested. Dilution…

Q: In the tripple sugar fermentation test, why is the triple sugar iron agar called a multi-test…

A: The process of chemical breakdown of complex substances into simple ones in the absence of oxygen…

Q: Which of the following items is the least suitable for sterilization by autoclave? a. Water for…

A: An autoclave is a machine that is used to perform industrial and scientific processes that require…

Q: A. Antibiotics, such as gentamicin, are used in media to prevent growth of susceptible microbes. Is…

A: Antibiotics are medicines prescribed to patients who are suffering from a bacterial infection. The…

Q: What is the hazard of the splattering tendency in flame sterilizing an inoculating loop? Can…

A: Aseptic preparation of culture media :-