Are you able to identify the lag, log, stationary and death phase in using this growth curve? Are you able to calculate the generation time for the microbial under this condition?

Q: Identify and describe the 4 wet-heat methods that are used to control microbial growth.

A: The different methods used for controlling the growth of microbes by moist heat are boiling,…

Q: Discuss why microorganism presents in the nature environment has a longer lag phase and shorter…

A: The microorganisms present in the environment are continually replicating and utilizing the…

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: Is the eosin methylene blue agar? (EMB) a complex or defined medium? Explain based on its…

A: Complex media consists of nutrients such as water soluble extracts of plant or animal tissue and…

Q: At time zero a microbial population has a cell density of 100 cells/ml. After 12 hr the cell density…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: Why do variations in generation time exist:a. Among different species of microorganisms?b. Within a…

A: Generation time is the time taken by a microbial species to double in number. This ranges from…

Q: What are the approaches for sterilization during the production of sterile products? Please answer…

A: destruction or complete removal of all living organisms and their spores is called as sterilization.…

Q: Which of the following agents (yeast, bacteria, and molds) do you think should be utilized to…

A: Yeast is a single-celled creature known as Saccharomyces cerevisiae that requires food, heat, and…

Q: How might an enrichment culture be used to isolate bacteria capable of growing photoautotrophically…

A: Answer: Introduction: Enrichment cultures can be able to rise a less quantity of required organisms…

Q: Microbes are cultured for various industrial products. How growth curve can be used for maximum…

A: Introduction: The bacterial cells grow via binary fission which brings about an increase in the…

Q: List and define five terms used to express a microbe’s optimal growth temperature

A: To express temperature adaptation the organisms can be described according to their optimal growth…

Q: Why is the membrane filter method preferred to the most probable numbermethod (MPN) for the…

A: Most probable number (MPN) is a method used to estimate the numbers of bacterial cells in a water…

Q: micro-organisms are the most resistant to heat sterilization?

A: Most of the bacteria cannot survive adverse heat condition. But somehow particular bacteria can…

Q: Why are extended periods of exponential microbialgrowth in nature rare and often slower than…

A: Microbial growth is the proliferation of the microbe into genetically identical daughter cells, by…

Q: Is generation time a useful parameter to indicate the types of mediabest suited to support the…

A: The advancement in science led to the formulation of several growth mediums that could support the…

Q: How can a life cycle of microorganism and heat resistance graph be used to determine the boiling…

A: Heat is one of the effective as well oldest physical methods that have been employed for microbial…

Q: What temperature is considered adequate for achieving sterilization of a compost pile?

A: temperature considered for achieving sterilization of a compost pile is 135-160 F. At a…

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: what criteria that a microorganism must meet before it can be considered an “indicator?”

A: Hygiene plays a major role in maintaining the health. It includes the quality of food, water, air,…

Q: How alcohol is effective at contolling microbial growth?

A: Sterilization: Sterilization includes the complete wipeout of all microscopic life on a surface.…

Q: Name and explain the culture media that can be used for cultivating non-specific and specific…

A: a) nutrient agar & tryptic soy agar, & brain heart infusion agar are culture media that can…

Q: Name 2 indirect methods for measuring microbial growth and describe how each is performed. a. i.…

A: Two indirect methods for measuring microbial growth are :  1. Turbidimetric method 2. Standard plate…

Q: What are the difference in the movement of microorganisms under wet mount from hanging drop…

A: There are some plus point for both the techniques like the wet Mount and hanging drop method…

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: Compare and contrast moist and dry heat methods of microbe control and give 2 examples of each.

A: The growth of microbes in an inanimate object can lead to the contamination of the particular…

Q: What is differential medium

A: Differential medium or indicative media contain compounds which support the growth of microbes and…

Q: WHAT IS THE TYPE OF Growth patterns on Agar Slant and Broth Medium

A: Growth and morphogenesis of plant is determined by the composition of culture media. There are few…

Q: Discuss briefly the phases of Microbial Growth Curve and why it is useful to plot the microbial…

A: For microbial growth many factors are important such as nutrients, temperature, pH, moisture and…

Q: How is the generation time (g) of an exponentiallygrowing culture determined?

A: Bacteria are microorganism that most commonly occur in the soil, air, water and in adverse…

Q: Microbial Cell Density, Growth Curves Time (min) 0 20 40 60 80 100 Gp1 Abs 0.054 0.053 0.10 0.21…

A: The time taken by a population to double it's size is known as the doubling time. A semilog graph…

Q: Is the Mueller-Hinton Agar (MHA) a complex or defined medium? Explain based on its composition. Is…

A: Mueller and Hinton in 1941 developed Mueller Hinton Agar(MHA). MHA is used for routine…

Q: For an exponentially growing culture that increases from 5 *106cells/ml to 5 * 108cells/ml in 8 h,…

A: Bacteria are microorganism that most commonly occur in the soil, air, water and in adverse…

Q: Describe the five phases of a microbial growth curve observed when growing microbes are grown in…

A: The bacterial growth curve represents the number of live cells in a bacterial population over a…

Q: What organism is the current record holder for theupper temperature limit for growth?

A: A thermophile is an organism that thrives at reasonably high temperatures, between 106 and 252 ° F…

Q: What is a pure culture and why is obtaining one useful inmicrobial ecology?

A: Microbes are living organisms. They are ubiquitous. They cannot be seen by the naked eyes. In…

Q: What are the criteria for media selection and the basic requirements for media formulation for…

A: Fermentation is a metabolic process that produces chemical changes in organic substrates through the…

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 culture media that can be used for cultivating non-specific and specific…

A: A microbiological culture medium is a substance that promotes the growth, support, and survival of…

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: What are the factors that influence the efficiency of chemical sterilization?

A: Chemical Sterilization is the process of removal of microorganisms by the use of chemical…

Q: In simpler terms explain Lag, Log, Stationary, and Death Phase in the Microbial Growth Curve?

A: Bacterial growth: - Increase in the number of cells. - Bacterial growth in a closed system (Batch…

Q: List 5 other methods of sterilization and describe the principle/s and when each method is used.

A: (Please note that, you provided more than one question, I can only answer one question at a time,…

Q: Calculate the doubling time (td) and specific growth rate (μ) using the logarithmic growth stage of…

A: The exponential phase or the log phase or the logarithmic in the process of bacterial growth is…

Q: What are the advantages and disadvantages of plate count technique over other methods of quantifying…

A: Plate count is a technique in which bacteria are counted by growing on the agar plates. Total…

Q: You have found that the D-value (decimal reduction value) of an antimicrobial agent to be 4 minutes…

A: In sterilization techniques, D-value or decimal-reduction value refers to the time taken, under…

Microbial Physiology

Microbial physiology is the branch of microbiology that is associated with studying the physiology of fungi, bacteria, and viruses. It is an important field of science concerning functional genomics and metabolic engineering.

Chemotaxis

The organism’s movement in a particular direction as a response to certain chemicals that are available in the environment is defined as chemotaxis. In brief, it can be defined as the occurrence of an organism’s movement in response to a certain chemical stimulus.