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Illustrate and describe the growth curve stages a bacterial culture experiences in a closed system.
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- Diagram and define the four phases of a bacterial growth curve. Describe in detail what is happening to cells at each phase.describe the molecular switches involved in microbial stationary growth phase. give one research article linkExplain the molecular regulations both temporal and spatial that controls the process of bacterial growth
- Describe the following phases of the bacterial growth curve and draw them out:a. Lag phaseb. Logarithmic phasec. Stationary phased. Decline/death phaseA bacterium is inoculated into a medium containing two carbon sources, one of which is the bacterium’s preferred carbon source. The resulting growth curve shows two lag phases. Explain this phenomenon. What is this type of growth called? Include a diagram of what the growth curve would look like and indicate the usage of each carbon source. Describe each phase of the BACTERIAL GROWTH CURVE (explain what happens, give the cells characteristics…).
- Explain the importance of describing the morphological characteristics of bacterial colonies when cultures were sample from an environmental source? Explain and support your pointmake a graph out of this t = time of growth of bacteria in mins y = number of bacteriaList the phases of the bacterial growth curve and describe both the condition of the environment and what is happening with the population of cells.
- List out 4 environmental factors (ie, temperature, pH level, water availability) that affect bacterial growth, and define the optimal growth conditions for your researched bacteria.Bacterial growth depends on many environmental factors, including the temperature of the environment. Since microbes can survive in a certain range of temperatures and will thrive at a temperature, understanding these variables allows for control of their growth. This understanding can be used, for example, to preserve certain foods or to treat infections. This lab simulation will use an instrument called a spectrophotometer. This instrument quantitatively measures the amount of light that is absorbed or transmitted by molecules in solution a) In your own words give an introduction to the microbial growth and the effect tempature has. b) In your own words explain the importance of the spectrophotometer in regards to microbial growth. c) In your own words give a hypothesis on how bacteria will react to different temperatures.Bacterial growth depends on many environmental factors, including the temperature of the environment. Since microbes can survive in a certain range of temperatures and will thrive at a temperature, understanding these variables allows for control of their growth. This understanding can be used, for example, to preserve certain foods or to treat infections. This lab simulation will use an instrument called a spectrophotometer. This instrument quantitatively measures the amount of light that is absorbed or transmitted by molecules in solution. Microbial populations grow at different rates based on temperature. One way to measure growth is by turbidity measurements. When bacteria multiply in a broth culture they turn the clear solution cloudy, or turbid. a) in your own words explain the proper steps to Inoculate 5°C sterile broth tube using aseptic technique