During the log phase of growth a. bacteria are not multiplying b. bacteria are dying, resting...
During the log phase of growth a. bacteria are not multiplying b. bacteria are dying, resting and multiplying c. bacteria are just multiplying but slower than in log phase d. bacteria are multiplying rapidly
Homework Answers
The answer is Bacteria are multiplying rapidly (d)
During the log phase the bacteria divides rapidly and the division is exponential. The doubling number of bacteria is very higfh and this happens due to the availability of nutrients in the medium.
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During the log phase of growth a. bacteria are not multiplying
b. bacteria are dying, resting...
8. What is false about this bacterial growth curve? A. B. (1) = axis scaled to...
8. What is false about this bacterial growth curve? A. B. (1) = axis scaled to the amount of energy present (2) = since antibiotics affect rapidly growing bacteria best, this is the phase where many organisms are the most sensitive to antibiotics. (3) = the lag phase where cell division is slow but is about to speed up. (4) = accumulation of of waste products and exhaustion of nutrients causes growth to slow down but the organisms are not...
please help solve Figure shows a typical bacterial growth curve with the y-axis indicating the log...
please help solve
Figure shows a typical bacterial growth curve with the y-axis indicating the log of the number of bacteria and the x-axis indicating time in culture. In the figure, which section (or sections) shows a growth phase where the number of cells dying equals the number of cells dividing? d. 10 Time (hr) Select one: 1.a 0 2.b 3. 0 4.0 5. a and An sixty-year-old man has painful fluid-filled vesicles that have begun crusting over in a...
When measuring the growth curve of E. coli by spectrophotometer, the death phase is not normally...
When measuring the growth curve of E. coli by spectrophotometer, the death phase is not normally seen as a change in absorbance because a. the cells are dividing most rapidly at that stage b. the cells are still “gearing up” to start dividing before log phase c. the spectrophotometer inhibits the death phase, so cells stay in stationary phase d. dead cells absorb and diffuse light to nearly the same degree as live cells do e. live cells are black,...
In which phase of the Microbial Growth Curve is new cell division <cell death? Stationary Phase...
In which phase of the Microbial Growth Curve is new cell division <cell death? Stationary Phase Log/Exponential Growth Phase Lag Phase Death Phase Question 6 0.2 pts In which phase of the Microbial Growth Curve is new cell division > cell death? Lag Phase Stationary Phase Log/Exponential Growth Phase Death Phase D Question 7 0.2 pts In which phase of the Microbial Growth Curve are cells metabolically active but not yet dividing? Log/Exponential Growth Phase Stationary Phase Death Phase Lag...
At a minimum, how many DnaE molecules are replicating the E. coli chromosome during log phase?...
At a minimum, how many DnaE molecules are replicating the E. coli chromosome during log phase? a. 1 b. 2 c. 3 d. 4
11.) A culture of bacteria in log phase increases from (Log1o ml) 8.0 to 8.6 in 1.5 h. What is specific growth rate (u) of this culture? What is the generation time (GT)? How many minut does it t...
11.) A culture of bacteria in log phase increases from (Log1o ml) 8.0 to 8.6 in 1.5 h. What is specific growth rate (u) of this culture? What is the generation time (GT)? How many minut does it take for a doubling of cells? After 181 minutes, how many doublings have occurred? 12.) Finish labeling the following plot and determine the μ"ae and Ks of E.coli for glucose at 35°C. Us units of mM for concentration. Linweaver Burk plot E.coli...
a. Write down a differential equation for bacterial growth during the exponential phase (batch culture), where...
a. Write down a differential equation for bacterial growth during the exponential phase (batch culture), where k is the instantaneous growth rate. b. Solve the equation. Your solution should be a continuous function that gives the number of cells as a function of time. c. Write an equation for the doubling time (generation time) in terms of k. d. Parameterize your equation as follows: Assume that you start with 10 cells, and that it takes each cell 30 minutes to...
PLEASE HELP!! Clear steps for each part would be much appreciated. thank you! It's not just money that multiplies with time... Suppose the number of bacteria on the surface of a phone screen dou...
PLEASE HELP!! Clear steps for each part would be much
appreciated. thank you!
It's not just money that multiplies with time... Suppose the number of bacteria on the surface of a phone screen doubles every 3 hours. 4. Write a function for the population, p, of bacteria as a function of n where n is the number of 3-hour periods since the bacteria first start multiplying. Call the initial population po a. b. How much will the population grow over...
The growth of a certain bacteria in a reactor... 3. The growth of a certain bacteria...
The growth of a certain bacteria in a reactor...
3. The growth of a certain bacteria in a reactor is assumed to be governed by the logistic equation: d P dt where P is the population in millions and t is the time in days. Recall that M is the carrying capacity of the reactor and k is a constant that depends on the growth rate (a) Suppose that the carrying capacity of the reactor is 10 million bacteria, and...
1. The graph below depicts the growth of a Gram-positive, spore-forming bacterium Bacillus thuringiensis (B. t.). This species normally lives in the soil as well as the alkaline gut of insects. a)...
1. The graph below depicts the growth of a
Gram-positive, spore-forming bacterium Bacillus thuringiensis (B.
t.). This species normally lives in the soil as well as the
alkaline gut of insects.
a) Label on the graph the phases of this growth cycle.
Below, describe the important features of each phase.
b) The graph shown was obtained by culturing B. t. in
media containing only minimal amounts of nutrients and salts. Draw
a growth curve on the same graph that would...
8. What is false about this bacterial growth curve? A. B. (1) = axis scaled to the amount of energy present (2) = since antibiotics affect rapidly growing bacteria best, this is the phase where many organisms are the most sensitive to antibiotics. (3) = the lag phase where cell division is slow but is about to speed up. (4) = accumulation of of waste products and exhaustion of nutrients causes growth to slow down but the organisms are not...
please help solve
Figure shows a typical bacterial growth curve with the y-axis indicating the log of the number of bacteria and the x-axis indicating time in culture. In the figure, which section (or sections) shows a growth phase where the number of cells dying equals the number of cells dividing? d. 10 Time (hr) Select one: 1.a 0 2.b 3. 0 4.0 5. a and An sixty-year-old man has painful fluid-filled vesicles that have begun crusting over in a...
In which phase of the Microbial Growth Curve is new cell division <cell death? Stationary Phase Log/Exponential Growth Phase Lag Phase Death Phase Question 6 0.2 pts In which phase of the Microbial Growth Curve is new cell division > cell death? Lag Phase Stationary Phase Log/Exponential Growth Phase Death Phase D Question 7 0.2 pts In which phase of the Microbial Growth Curve are cells metabolically active but not yet dividing? Log/Exponential Growth Phase Stationary Phase Death Phase Lag...
11.) A culture of bacteria in log phase increases from (Log1o ml) 8.0 to 8.6 in 1.5 h. What is specific growth rate (u) of this culture? What is the generation time (GT)? How many minut does it take for a doubling of cells? After 181 minutes, how many doublings have occurred? 12.) Finish labeling the following plot and determine the μ"ae and Ks of E.coli for glucose at 35°C. Us units of mM for concentration. Linweaver Burk plot E.coli...
PLEASE HELP!! Clear steps for each part would be much
appreciated. thank you!
It's not just money that multiplies with time... Suppose the number of bacteria on the surface of a phone screen doubles every 3 hours. 4. Write a function for the population, p, of bacteria as a function of n where n is the number of 3-hour periods since the bacteria first start multiplying. Call the initial population po a. b. How much will the population grow over...
The growth of a certain bacteria in a reactor...
3. The growth of a certain bacteria in a reactor is assumed to be governed by the logistic equation: d P dt where P is the population in millions and t is the time in days. Recall that M is the carrying capacity of the reactor and k is a constant that depends on the growth rate (a) Suppose that the carrying capacity of the reactor is 10 million bacteria, and...
1. The graph below depicts the growth of a
Gram-positive, spore-forming bacterium Bacillus thuringiensis (B.
t.). This species normally lives in the soil as well as the
alkaline gut of insects.
a) Label on the graph the phases of this growth cycle.
Below, describe the important features of each phase.
b) The graph shown was obtained by culturing B. t. in
media containing only minimal amounts of nutrients and salts. Draw
a growth curve on the same graph that would...
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