Heat-labile material to be introduced to culture medium was filtered using membrane filters with unknown pore size. Effect: Rationale:

Q: A specific heat treatment used on a particular bacterial suspension has a DRT of 10 seconds, how…

A: Heat treatments have been used for the reduction of bacterial numbers and even for sterilization…

Q: What would your final dilution be if you transferred 0.1 mL of a 10-6 dilution and added it to a…

A: The pour plate method is a technique used to count the number of colony-forming bacteria found in a…

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

Q: Before inoculating and pouring molten nutrient agar into a plate, why must the agar first be cooled…

A: Agar or agar-agar is a jelly-like substances obtained from red algae. Agar is a solidifying agent…

Q: Explain why specimens should be taken aseptically and processed quickly to ensure accurate results,…

A: Microbiology is the study of microscopic organisms, such as bacteria, viruses, Achaea, fungi and…

Q: What are the advantages and disadvantages of the filter method in the analysis of water samples?

A: Utilising the membrane filter method, test is gone through the layer utilising a filter funnel and…

Q: With a plate count average of 297 and a final dilution on the plate of 1:1,000 ; what is the viable…

A: Bacteria are the prokaryotic, unicellular organisms that are sometimes pathogenic in nature. The…

Q: You aseptically transfer 1 ml of your optional liquid culture into 99 ml of sterile water. What is…

A: The following are needed for calculating the dilution factor  1) Original volume of  solution we…

Q: For a laboratory exercise of basic techniques in microbiology: Gram stain and Microscopy. What are…

A: "Gram staining is important in microbiology because it allows scientists to quickly and easily…

Q: Dilute cells from an old culture 1:200 into 5 mL of fresh media. What volume of the old culture…

A: Introduction Dilution is the process of lowering the concentration of a solute in a solution by…

Q: What is differential medium and differential media? Explain the difference ?

A: Difference between differential medumium -   .- A differential medium support the expansion of any…

Q: A microbiologist has isolated a new strain of bacteria, and is trying to characterize aspects of its…

A: Psychrophilic bacteria are cold loving bacteria that grows and reproduce at lower temperatures…

Q: Why does turbidity lose reliability at high cell concentrations when the culture reaches the…

A: The turbidity measurement method for counting the cells in the tissue culture is the estimation and…

Q: Solve the following problem: 34,000 bacteria/l have been measured 4 hours after inoculating a…

A: Given information Bacterial population after 4 hours of inoculation= 34,000 bacteria/l Bacterial…

Q: 1a.) How pH of the culture medium affects the cell culture? Please give examples of low pH and…

A: Every cell culture has a unique or specific pH at which the cells in the culture will grow. PH is an…

Q: What is the advantage of the plating method over an electronic cell counting method in counting…

A: Bacteria culturing is done in order to grow the bacterial strains that are able to show resistance…

Q: Voges Proskauer test Does color of the medium change to red after both reagents were added and…

A: Biochemical method of bacterial identification is a classical method that is used for the…

Q: Answer the following questions  What is the purpose of the 95% ethanol step in the Gram staining…

A: The gram staining technique is used to differentiate between the gram positive and gram negative…

Q: microbial sensivity lab: in the procedure used to test bacterial growth against various temperatures…

A: Growth of bacteria differs with varying temperature. Bacteria grows rapidly in the temperature range…

Q: You have 2 mL of bacterial culture. How would you make a 10^-2 dilution using the entire culture…

A: The objective of this question is to understand how to make a 10^-2 dilution of a bacterial culture…