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During which phase of the bacterial growth curve does the total number of viable cells decline?
Wiki User
∙ 13y ago
dead phase
Wiki User
∙ 13y ago
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What are the significance of bacterial growth curve in food preservation?
Well bacterial growth curve give simply the time vs no of cell curve which can be consider for different bacteria that at which temprature and pH they can stop growing, which would help in preserving food.
What is the number one bacterial killer in the world?
TB
How do number of chromosome affects the genes and DNA?
Not at a fundamental level, chromosomes are just the way that genes are clumped together. But on a practical level, chromosomes are what the cells manipulate during growth and (especially) during reproduction.
How does the birth rate compare to the death rate of a population whose size remains constant?
The difference between the two is 'population growth' if it is a positive number or 'population decline' if it is negative.
How could one can enumerate the number of bacterial cells on the uncovered part of human body such as palm?
by sucking that part
What is the number one cause of spoiled meat?
uncooled storage allowing bacterial growth.
What are the significance of bacterial growth curve in food preservation?
Well bacterial growth curve give simply the time vs no of cell curve which can be consider for different bacteria that at which temprature and pH they can stop growing, which would help in preserving food.
Which phases of a typical bacterial growth curve illustrates a log change in cell number. Oviously log or growth phase is logarithmic. Is the death phase a negative log change?
Exponential
Is the primary sector in growth or decline?
There is an overall decline in the primary sector in the UK due to coal and raw materials reducing in number. but it has seen a significant growth in the organic industry since the advertisement of organic food by a well know chef; named Jamie Oliver, who campaigned for schools to eat healthy (there is a decline in the secondary sector too and a growth in the Tertiary)
Increase in size or number of cells?
During childhood or other peroids of rapid growth.
What is bacterial kinetics?
The growth of microorganisms reproducing by binary fission can be plotted as the logarithm of the number of viable cells versus the incubation time. The resulting curve has four distinct phases and its mathamatical expression are called bacterial or microbial kinetics. Lag Phase When microorganisms are introduced into fresh culture medium, usually no immediate increase in cell number occurs, and therefore this period is called the lag phase.Exponential Phase During the exponential or log phase, microorganisms are growing and dividing at the maximal rate possible given their genetic potential, the nature of the medium, and the conditions under which they are growing. Stationary Phase Eventually population growth ceases and the growth curve becomes horizontal. This stationary phase usually is attained by bacteria at a population level of around 109 cells per ml. Death Phase Detrimental environmental changes like nutrient deprivation and the buildup of toxic wastes lead to the decline in the number of viable cells characteristic of the death phase. The death of a microbial population, like its growth during the exponential phase, is usually logarithmic During the exponential phase each microorganism is dividing at constant rate. Thus the population will double in during the specific length of time called the generation time or doubling time These observations can be expressed as equations for thegeneration time. Let No the initial population number Nt the population at time t n the number of generations in time t Then Nt = No multiply 2n
What is the stage where bacteria grows rapidly?
Under ideal conditions, the growth of a population of bacteria occurs in several stages termed lag, log, stationary, and death.During the lag phase, active metabolic activity occurs involving synthesis of DNA and enzymes, but no growth.Geometric population growth occurs during the log, or exponential phase, when metabolic activity is most intense..Following the log phase, the growth rate slows and the production of new cells equals the rate of cell death. This period, known as the stationary phase, involves the establishment of an equilibrium in population numbers and a slowing of the metabolic activities of individual cells. The stationary phase reflects a change in growing condition—for example, a lack of nutrients and/or the accumulation of waste products.When the rate of cell deaths exceeds the number of new cells formed, the population equilibrium shifts to a net reduction in numbers and the population enters the death phase, or logarithmic decline phase. The population may diminish until only a few cells remain, or the population may die out entirely.
When did the number of cheetahs start to decline?
in 2071
What are the reasons for the decline of black rhino?
Poachers hunting this endangered species has made the number of their population decline.
Did the number of newspapers sold increase from 1980 to 2000?
It is likely that the number of newspapers sold decreased from 1980 to 2000 due to the rise of digital media and the decline of print media during that time period.
Populations reproduce at a slow rate where the same number of individuals is added during each specific time intervals during this type of growth?
idgaf do it yourself
What does the rate of growth do during exponential growth?
Exponential growth implies that the rate of growth increases as time passes. So, it's not that "one cell" becomes "two cells" in two seconds and "three cells" in three seconds - that's linear growth. If you plot a chart of "Number of cells" against "Time" or "Number of cycles", the number of cells increases with a ratio greater than 1:1 each time unit or cycle.
