The generation time of a bacterial culture that produces two generations per hour is: a. Equal to that produces three generations per hour bLesser than that produces five generations per hour than that produces three generations per hour Lesser than that produces four generations per hour Greater than that produces three generations per hour

Q: The time between inoculation and the beginning of growth is usually called the: A) O lag phase B) O…

A: Provided with the correct conditions (food, correct temperature, etc) microbes will grow terribly…

Q: You want to produce a biological agent to kill bacteria that cause disease. Which organism you will…

A: Antibiotics are drugs that help the host's defense mechanism combat infection by preventing…

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: There are two cultures of yeast cells in the pictures, one has been incubated for 6 hours and one…

A: Let's say, the yeast cell culture which was incubated for 6  hours as  = sample A the yeast cell…

Q: If a bacterium can ferment one type of sugar, it can ferment any sugar. If a bacterium can ferment…

A: Most bacteria metabolise sugar as a primary source of their energyobtained in the form of ATP.…

Q: Blood agar is a differential medium that will show us a clear zone around a colony of normal flora…

A: A differential medium is made up of chemicals or composition that would help us to determine…

Q: A culture initially has P0 number of bacteria. At t = 1 hour the number of bacteria is measured to…

A: A first order initial value problem is a system of equations of the type  F(t,y,y’)=0 ,  y(t0)=y0 .…

Q: Which of the following is the best definition of generationtime?(a) The length of time it takes for…

A: Bacteria are unicellular prokaryotic microorganisms (nucleus is not enclosed in a nuclear membrane)…

Q: What makes a culture media DIFFERENTIAL? Explain and provide examples of differential type of…

A: Answer: Culture media is the growth medium or culture medium which is solid, liquid, or semisolid in…

Q: Day 1 Day 2 Day 3 Day 4 log CFU/ml 5.6294 5.6493 5.8488 5.8235 Data for Graph 1 Day 1 Day 2 Day 3…

A: Bacteria are prokaryotic organisms that may be pathogenic in nature. The cells are devoid of…

Q: Draw the following growth curves for E. coli, starting with 100 cells with a generation time of 30…

A: The number of living cells in a bacterial population over time is represented by the bacterial…

Q: The phase (s) in a growth curve where bacterial numbers do not increase considerably in a nutrient…

A: In microbiology, the bacterial growth curve is a very essential tool to determine the development of…

Q: ake a look at your streak plate from the use of a mix culture. Does your plate show the results that…

A: The streak plate method is a microbiological technique used for the isolation of pure strain ;…

Q: what are some of the strengths and weaknesses to using a Culture dependent enumeration approach from…

A: culture-dependent methods generally recover a small portion of the diversity from soil environments.…

Q: The number of bacteria in a culture increases rapidly. The table below gives the number N (t) of…

A: Given Values: Number of bacteria at a time (t=0) = 1000 Number of bacteria at a time (t=3.1 hours) =…

Q: How would a limited food supply affect the bacterial growth curve? The lag phase would be longer…

A: Bacterial growth curve is the number of living cells plotted against time. It has four phases, these…

Q: This diagram shows the filter paper method used to evaluate the inhibitory effect of chemical…

A: Factors that affect the size of the zone of inhibition-  effectiveness of the inhibitory agent…

Q: f you compare the standards on bacteria provided by the simulation, a higher level is acceptable for…

A: Concept used:  Industrial and recreational waters' water quality. Important terms:  Water for…

Q: In this activity, you will receive an “unknown” containing two species. The first step in…

A: For identifying unknown samples ,Microbiology students perform a step by step experiments and…

Q: Your lab coordinator has decided to grow and maintain a sourdough starter.  A sourdough starter is a…

A: Fermentation is the anaerobic process by which microorganisms use carbohydrates as substrates to…

Q: How would you enrich for an organism that can use phenol as a carbon source?

A: Enrichment culture media is a type of growth media that is used to obtain the microorganisms of…

Q: Based on these results, which of the following statements is true regarding the effectiveness of…

A: A disinfectant is a chemical substance or compound that is used to inactivate or destroy the…

Q: The bacterium Dontuplodemeus tocheggus has a generation time of 20 minutes. Starting with one cell…

A: Bacteria are a family of rod-shaped bacteria that are often found in soil or water. They are known…

Q: Why is it important to use a sterilized loop between streaks when preparing a streak­plate?…

A: Streak plates are prepared to grow and isolate individual colonies of bacteria. Here, we will mark…

Q: A loopful of bacteria containing 1000 bacterial cells is inoculated into a nutrient broth and…

A: It is a multiple choice question.

Q: e the process to make a 4-phase streak plate beginning with your first streak (i.e you have…

A: The sample/inoculum is usually pored by streak with the diluted through streaking it across the…

Q: A culture is inoculated with 109 cells/mL at noon. At ten PM, the population is determined to be 115…

A: The number of generations of a bacteria is the number of times it divides. The doubling time is…

Q: The graph shows the number of microbial cells (log scale) against time in a liquid culture. In which…

A: Bacterial growth is divided into four stages. During the lag phase, the bacterium prepares itself by…

Q: A colony of bacteria or fungi A. are one single individual B. Cannot survive on agar C. Is formed…

A: Bacteria are microscopic prokaryotic organism. Fungi on the other hand is eukaryotic organism.…

Q: A medium was inoculated with 5 * 106 cells/ml of Escherichiacoli cells. Following a 1-h lag, the…

A: Growth curves are generally the description of the density of cell populations in liquid culture…

Q: A slant is inoculated with 100 E.coli cells. The slant is left at room temperature where the…

A: Bacterial cells divide by binary fission to produce two daughter cells. The growth of a bacterial…

Q: Define the following (Microbiology) Lag phase Exponential phase Stationary phase Death phase

A: Bacteria are prokaryotic organisms. They undergo asexual reproduction that occurs commonly by the…

Q: A stock solution of a bacterial strain is diluted 1/10000 to a total volume of 500ul. Then, 50ul of…

A: The mixing of the stock solution with the dilutant liquid is known as dilution. The ratio of stock…

Q: From the growth OD data alplot a growth curve graph with standard deviation bars blcalculate the…

A: Abstract Error bars commonly appear in figures in publications, but experimental biologists are…

Q: How do you know if you have a ‘countable’ plate when doing a dilution series?   Two plates…

A: The concentration of stock solution can be calculated by first diluting the stock into a suitable…

Q: Based on prior experiments, you have determined that for a culture of S. aureus an absorbance…

A: In this question, we are given that 1 absorbance reading of S.aureus culture contains 5.75 x 106…

Q: All of the following are valid measurements of growth except: A. Counting viable cells B.…

A: Use the general formula: [Number of colonies counted] × 10 × [how many times the sample must be…

Q: Which of the answers below represents the correct mathematical expression of bacterial growth of…

A: The formula for bacterial growth is as follows: Nt = No × 2n Where Nt= bacterial population at time…

Q: Describe the following phases of the bacterial growth curve and draw them out: a.    Lag phase b.…

A: Answer

Q: The following plates were inoculated with organisms A, B, C, and D on each sector of this plate.…

A: The study of tiny living creatures such as bacteria, viruses, fungus, algae, and protozoa is known…

Q: А B

A: Cell passaging or subculturing is a technique, wherein the cell culture is divided or transferred to…

Q: An inoculum of 106 bacterial cells was introduced into a flask of culture medium and growth…

A: Disclaimer: It is assumed that the initial number of cells is 106 and the final number of cells is…

Q: One of the following is INCORRECT about Spread plate a-Allow aerobic bacteria to grow b-The sample…

A: The spread plate method is used to count the viable cells.

Q: Which of the following takes the LONGEST to kill a live culture of vegetative bacterial cells?   a)…

A: A "microbe" is a living entity that is so tiny that it cannot be seen with the naked eye.…

Q: Using a solid line draw a standard bacterial growth curve. Represent all the phases by numbering…

A: Bacterial growth curve is defined as the graph representing the number of viable bacterial cells…

Q: In a new batch of culture medium, a group of sub-lethally wounded bacterial cells were transferred.…

A: Lag Phase- In this phase bacteria are still adapting themselves to the culture and are maturing with…

Q: (a) if it is found that the number doubles in 6 hours, how many may be expected at the end of 18…

A: Bacteria are microscopic organisms not visible to the naked eye. These are omnipresent (they are…

Q: Bacteria can increase in their number by binary fission into two daughter cells. The rate of…

A: The bacterial growth curve is divided into the four-phase the lag phase, the log phase or…

Q: Bacteria growth and multiplication play a role in infectious diseases : Bacteria can increase in…

A: According to the question given above, we have to find out the growth curve effect on the generation…

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.