Bacteria is being cultured in an agar plate. It was observed that the growth of bacteria is proportional to the bacterial population itself. In an experiment don between 12:00NN and 2:00PM, the population triples. At what time should the population be 100 times than it was at noontime? Select the correct response: 7:48 PM 8:50 PM none of these 8:22 PM 9:10 PM

Q: starting with four bacterial cells per milliliter in a rich nutrient medium, with a 1-hour lag phase…

A: Bacterial Growth --Bacterial Cell growth is proliferation of bacterium in to daughter cells ,…

Q: Day 1 Day 2 Day 3 Day 4 R1 30 40 68 63 R2 47 45 61 81 R3 47 51 69 60 R4 36 38 74 77 R5 53 36 77 60…

A: First, calculate the mean. Now Calculate each measurement's deviation from the mean. Now square it.…

Q: Pathogen population size correlates with the severity of an infection. What is the most inexpensive,…

A: To quantify bacteria, we can use methods like:Plate Counting (CFU): Dilute and plate samples, count…

Q: . What is meant by a bacterial “colony” or colony-forming unit? 2. Why are colonies that develop on…

A: Since you've asked multiple questions, we're only answering the first three answers for you. If you…

Q: A bacterial culture contains 500 organisms / mL in the exponential growth phase at 8 am in the…

A: The exponential phase of bacterial growth is the phase when bacteria are actively dividing and…

Q: Based on the data below, how much more UV resistant was B. licheniformis relative to S. aureus? (All…

A: UV radiation cause production of large number of ROS and also get absorbed into DNA thus leads to…

Q: Based on the following image, which concentration of antibiotic would be considered the minimum…

A: Minimum bactericidal concentration (MBC) is defined as the lowest concentration in which an…

Q: Use the following data to calculate the original bacterial sample. 1 ml Sample of E. coli 1/10 OF-10…

A: Bacteria is a ubiquitous microscopic prokaryotic organisms which does not contain true nucleus and…

Q: Oxygen Make sketches to show the characteristic growth of each of the four cultures. P. stutzeri E.…

A: It requires oxygen to survive.The black fill is a cap, and the other line is till there is the…

Q: You have a culture that has 5 X103 cfu/ml of bacteria in it. You perform a serial dilution by adding…

A: In microbiology and bacteriology, the technique of serial dilution is a fundamental method used to…

Q: Decimal Reduction time is a measurement of What percentage of a microbial population is removed…

A: INTRODUCTION Decimal reduction time Time required at the given condition or a set of condition to…

Q: The number of bacteria in the samples need to be quantified. The laboratory uses a specific protocol…

A: Introduction :- Bacteria are single-celled organisms with a small size. Bacteria can be found…

Q: A patient is diagnosed with a urinary tract infection and a urine sample is obtained and sent to the…

A: Question : A patient is diagnosed with a urinary tract infection and a urine sample is obtained and…

Q: It is the period wherein the bacteria is sensitive to radiation and antimicrobial agents. Question…

A: Often bacterial growth involves different phases in its life cycle. These different phases are very…

Q: A sample of water was enumerated using a counting chamber (haemocytometer) and 220 bacterial cells…

A: The viable plate count, or simply plate count, is a count of viable or live cells. It is based on…

Q: A bacterial strain is growing exponentially. At 1:00pm the titre of the culture is 2x10^3 cells per…

A: The objective of the question is to determine the number of generations that have elapsed, the…

Q: Use the information in the tables below to determine the most probable number of bacteria per 100 mL…

A: The Most Probable Number (MPN) method, which replicates liquid broth growth in ten-fold dilutions,…

Q: aseptic technique and pure culture technique

A: The aseptic technique is a fundamental practice in microbiology aimed at preventing the introduction…

Q: Which of the following is FALSE about interpreting the results of normal microbial flora experiment?…

A: Huge diversity of microbial flora could be found with the skin and mucous membranes of the hosts…

Q: After treating the bacterium Examplicus expedientius with a chemical agent to test the effectiveness…

A: Answer.) :- The Decimal Reduction Time (DRT) is a measure used to evaluate the effectiveness of a…

Q: c. MPN = Tube Original sample 10-¹ 10-² 10-3 10-4 10-5 10-6 Dilution factor 1 1/10 1/100 1/1000…

A: Introduction No of bacteria present in a sample can be estimated by MPN (most probable number)…

Q: Describe how you would execute this first stage from the point you are handed the nutrient broth…

A: For isolation of any culture, it needs to be incubated in broth to obtain full fledged turbidity or…

Q: What is the growth rate of the E. coli population?

A: We know that the bacteria doubles after a certain time: Number of bacteria in beginning of growth…

Q: You begin with an overnight culture of approximately 108 organisms/ml and need a concentration of…

A: In an Overnight culture of the bacteria, their growth factor depends upon the type of bacteria we…

Q: O Yes O No

A: Growing bacteria on a petri dish is a fundamental technique used in microbiology to culture and…

Q: Which of the following is FALSE about interpreting the results of normal microbial flora experiment?…

A: Normal microbial flora: Normal flora includes microorganisms (bacteria, fungi, viruses, and…

Q: The cell concentration measured in samples taken at certain intervals from a microorganism growth…

A: From the given table,   Cf, final cell concentration =0.376  Ci, initial cell concentration=0.01…

Q: Below are the results of streak for isolations of Bacterium 1 and Bacterium 2 before and after they…

A: Pure culture :- Pure culture is one that has only one kind of bacterial population which earlier…

Q: What is the correct arrangement of the unknown bacterium growing on your MacConkey agar?

A: MacConkey agar (MAC) was the first solid differential media to be designed by Alfred Theodore…

Q: Percentage of bacteria surviving 100 80 60 40 20 10 0 1% iodine in 70% ethanol (tincture of iodine)…

A: The microorganisms can cause different health issues. For this reason proper hygiene must be…

Q: Use the information in the tables below to determine the most probable number of bacteria per 100 mL…

A: Given  Number of positive tube  0.1 ml = 4  0.01 ml = 1  0.001 ml = 0

Q: Graph of Absorbance vs Time(mins) 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 10 20 30 40 50 60 70 Time (mins) -…

A: Ampicillin is an antibiotic which inhibits the bacterial enzyme transpeptidase by binding to it…

Q: Using a diagram similar to those provided, describe how serial dilutions and the Standard Plate…

A: The stepwise dilution of a solution is termed as a serial dilution. Generally, the dilution…

Q: Describe how to make bacterial culture in different media. Explain different cultural techniques…

A: The predigested protein provides nutrition for the growth of bacteria. A culture medium must contain…

Q: The below  photograph shows a Gram-stained slide viewed using a light microscope set at brightfield…

A: Gram's staining is a technique used to distinguish between Gram negative and Gram positive bacteria.…

Q: Use the photo below to measure the diameter of each antibiotic (all 3) and record the name and…

A: The microorganisms or bacteria are grown in the culture plate in the microbiology laboratory for…

Q: Which of the following is FALSE about interpreting the results of normal microbial flora experiment?…

A: From shortly after birth until death, every human being's skin and mucous membranes are home to a…

Q: A culture of bacteria is found to have a DRT of 2 minutes. How long would it take to reduce the…

A: Heat is used for sterilization of those substances that can withstand it over longer periods or…

Q: You attempted to determine the number of bacteria in a culture using the Turbidimetry method with a…

A: Bacterial cell counts in a broth or culture can be determined by culturing multiple plates and…

Q: (refer to the photo below) Which of the 2 types of bacteria will soon die? Why?

A: P.caudatum will die soon. P. aurelia outcompetes P. caudatum for food, leading to the latter's…

Q: a) Create a bacterial growth curve with log values of CFU/ml on the Y-axis andthe time

A: Bacterial growth curve is a graphical representation of number of live bacterial cells over the time…

Q: A patient sample will be analyzed. You are responsible to quantify the bacteria number. The dilution…

A: A sample of your blood, urine, skin, or any part of your body will be taken during a bacteria…

Microbial Growth

The development of microbial growth is influenced by various natural conditions (both physical and synthetic) like pH, temperature, saltiness, gas focus (O2, CO2, and H2), nutrients, water action, and assimilation. Knowing the distinctive physical and chemical factors that influence the development and endurance of microbial growth in the climate will assist with reinforcing endeavors outfitted towards their control. These lines lessen or diminish their harmful impacts on humankind, creatures, and the climate.