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

Q: What is the difference between a mixed culture and a contaminated culture if they both contain more…

A: In microbiology , a bacterial culture is a growth of microorganisms which have been grown in a…

Q: If a culture had 4 cells to begin with and has a generation time of 60 minutes, how long would it…

A: "Microbiology" is the study of microorganisms and associated topics. Microbiology has gone a long…

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: Which has a greater impact on the survival of an organism, temperatures above its maximum…

A: The microbes grow in a wide temperature range. The microbial growths are found to be higher at their…

Q: How would light shone on one side of the column influence the growth of microorganisms?

A: Different microbes have different growth requirements.  It can be minerals , temperature,  ph ,…

Q: What terms are used to describe organisms whose growthpH optimum is very high? Very low?

A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…

Q: What happens in a chemostat if the dilution rate exceeds themaximal specific growth rate of the…

A: The chemostat is a reactor in which fresh medium is added continuously while leftovers are removed.…

Q: What is the effect of temperature in the formation of milk foams?

A: Foam is an object formed by trapping pockets of gas in a liquid or solid.

Q: Calculate mean growth rate and generation time of a culture that increase in exponential phase from…

A: Generation time is time taken for culture organisms to double in size. Generation time = t/n  where…

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 does the commercial production of yeast require special equipment to achieve adequate aeration,…

A: High yield of yeast cannot be attained unless air in a huge quantity is injected in fermentation…

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: Why is the time of exposure and temperature required for sterilization greater for dry heat than for…

A: Any technique that removes, destroys, or deactivates all forms of life and other biological agents…

Q: The factors for the manipulation of culture medium?

A: Culture medium It is also called a growth medium. It is a solid, liquid, or semi-solid medium that…

Q: The term psychrophile? a. refers to an organism that has an optimum growth within the range of -5…

A: Bacteria  A unicellular prokaryotic microorganisms not visible to the naked eyes.

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 factors can cause a lag phase in a bacterial growth curve?

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

Q: When is sterilization by filtration preferred over sterilization by heat? Why? What makes heat an…

A: Answer :- 1)Filteration is the sterilization process wherein there is the physical removal of…

Q: How is microbial growth directly dependent on temperature?

A: Microbes are minute, unicellular/multicellular, prokaryotic living organisms that cannot be seen…

Q: What specific structure is indicated by the pointer? 2 years How many years of growth are…

A: A plant has three main parts. These are root, stem, and leaves. The leaves are attached with the…

Q: Why does a one-step growth curve differ in shapefrom that of a bacterial growth curve?

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

Q: temperature and light source affect the number and type of colonies that can be found in the…

A: Microbes such as bacteria, fungi, viruses are grown at the earth's surface. The atmosphere provides…

Q: What are the three major processes that contributes to the decomposition? What are their controls?

A: Decomposition is the process of degradation of nutrients in dead and decaying organisms. The process…

Q: How would a facultative anaerobe growth curve change if it was placed in the presence of oxygen…

A: Facultative anaerobes are organisms that survive in the presence of oxygen and use oxygen for…

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: what is the cause of different species of psychrotrophic bacteria growing in the CTSA medium at 7…

A: They can grow at extreme low temperatures and lead to spoilage of food by modifying the compounds…

Q: What is the equation that represents the mass balance of the exponential phase of bacterial growth?…

A: In exponential growth, a population's per capita (per individual) growth rate stays the same…

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: Why is the incubation temperature criticalwhen using the Filter Method when testing water samples?

A: Incubation temperature is critical for bacterial growth if this temperature is too high or too low…

Q: Why would cells that are vigorously growing when inoculated into fresh culture medium have a shorter…

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

Q: What is the name of this media? What type of media is it? What does the yellow color indicate? What…

A: Selective media generally selects for the growth of a desired organism, stopping the growth of or…

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: 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: What is the nature of samples that should NOT be placed inside the drying-oven?

A: According to the question, we have to explain the nature of the samples that should not be placed…

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 is the substrate(s) that will be used by the microorganism to produce the calcite ?

A: Biomineralization is the process by which microorganisms and other living organisms directly or…

Q: To measure the culture temperature, why is the thermometer placed in a tube separate from the…

A: A microbe or microorganism is a microscopic organism that is too small to be seen with the naked…

Q: Why does the growth rate rise with increasing temperature and then fall again at higher…

A: Cell growth is defined as an increase or elevation in the cell's overall mass, which includes the…

Q: use these OD numbers to plot growth curve for E. coli K12– and estimate generation time for this…

A: The growth curve for E.coli K12 is plotted as follows:

Q: Explain the effect that environmental factors exert on the growth and development of an algal batch…

A: The growth and development of algae is controlled by various environmental factors. This includes,…

Q: What conditions need to change in order to allow for thermophilic spores to grow instead of…

A: Spores are a dormant form of bacteria. They are tough and highly resistant to unfavorable conditions…

Q: If testing had come back as oxidase negative, urease positive and growth on MacConkey agar, what…

A: MacConkey agar is a selective and differential culture medium used for the isolation and…

Q: Turbidometry is a method used for counting microbes?

A: Microbiology is the branch of biology that deals with microorganisms. Bacterial cultures and their…

Q: How would light shone on one side of the Winogradsky column influence the growth of microorganisms?

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

Q: What might have been some of the culture conditions used to isolate A. fumarolicum?

A: A.fumarolicum is an Extremophile. They are acidophilic, thermophilic and methanotropic in nature…

Q: Why does honey stay at room temperature for months/years without "spoiling" or being affected by…

A: SPOILAGE- Mostly contamination comes from external sources during bleeding, handling, and at the…

Q: Are you able to identify the lag, log, stationary and death phase in using this growth curve? Are…

A: The growth curve of bacterial cells can be divided into four distinct phases known as lag, log (or…

Q: What was the direction of centrifugation (which fractions correspond to the bottom of the centrifuge…

A: Centrifugal force : centrifugal force is the force that applies on a particle moving in a circular…

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.