Assume a population of E. Coli doubles every 20 minutes. Write an equation for the number of Ecoli, N, as a function of time, t.
what i did so far:
Nt=(N0)(2^20k)
logNt=(logN0)+20klog2
where do i go from here
Equation for Bacteria Growth?
Hi there,
I think it should be:
N(t)=(N0)*[2^(t/20)], where t is in minutes and N0 is the initial population (at t = 0 min).
That is the equation.
Reply:Nt=No * 2^t/20
let initially population is No after time t1=20 min it is No*2^ti/20
similarly proceeding for 40 and 60 min we can get the answer
paper bush
Monday, November 21, 2011
Doesbacteria affect bacteria to died.?
Well, it may seem impossible, but yes, they can! Let me give you one simple example, among other examples.
Our skin has loads of bacteria on it, which one might consider as normal flora, since they inhabit our skin and not cause any problems. Now this normal flora has established it ground on our skin, occupying space and metabolizing however it can, and this occupance of space actually blocks partially, if not completely, the establishment of growth of pathogenic bacteria, causing most of them to not cause disease and may perhaps die in the way.This is the same way in our stomach, especially the gut.
Hope this helps!
Doesbacteria affect bacteria to died.?
Bacteria does effect other bacteria wether it is dead or not. It can use the dead bacteria for energy.
Our skin has loads of bacteria on it, which one might consider as normal flora, since they inhabit our skin and not cause any problems. Now this normal flora has established it ground on our skin, occupying space and metabolizing however it can, and this occupance of space actually blocks partially, if not completely, the establishment of growth of pathogenic bacteria, causing most of them to not cause disease and may perhaps die in the way.This is the same way in our stomach, especially the gut.
Hope this helps!
Doesbacteria affect bacteria to died.?
Bacteria does effect other bacteria wether it is dead or not. It can use the dead bacteria for energy.
Why is bacteria important to the soil?
There are many uses of bacteria in soil.
1.they decompose dead bodies and help in recycling of nutrients.
2.They fix nitrogen.
3.They make nutrients available to the plants.
4.They secrete hormones and help in plant growth.
Why is bacteria important to the soil?
Nitrogen fixation.
Reply:Because sometimes some bacteria have good things that the soil need
Reply:they help in maintaining the nitrogen balance of the soil...they r just too good ...u cant just imagine a micro organism can do.
Reply:Soil, minerals , salts etc etc are all life less bodies. Its life that changes the structure of these bodies , due to putrifaction , chemical reaction and so on.Therefore all the organic matter of life like fallen trees, dead animals, birds, insects and also humans all get burried under soil and It is the bacteria which is primarly responsible to break all these organic matter to different chemical composition like salts, minerals , phospates etc. The soil digests and absorbs all the organic matter with the help of bacteria and hence it is important to soil.
Reply:Soil fertility
Reply:its important to us too there is always bacteria on us apparently they eat the waste that our bodies produce, so it would do the same in soil also, to eat the waste that is present
Reply:bacteria decomposes wastes and even bodies.
1.they decompose dead bodies and help in recycling of nutrients.
2.They fix nitrogen.
3.They make nutrients available to the plants.
4.They secrete hormones and help in plant growth.
Why is bacteria important to the soil?
Nitrogen fixation.
Reply:Because sometimes some bacteria have good things that the soil need
Reply:they help in maintaining the nitrogen balance of the soil...they r just too good ...u cant just imagine a micro organism can do.
Reply:Soil, minerals , salts etc etc are all life less bodies. Its life that changes the structure of these bodies , due to putrifaction , chemical reaction and so on.Therefore all the organic matter of life like fallen trees, dead animals, birds, insects and also humans all get burried under soil and It is the bacteria which is primarly responsible to break all these organic matter to different chemical composition like salts, minerals , phospates etc. The soil digests and absorbs all the organic matter with the help of bacteria and hence it is important to soil.
Reply:Soil fertility
Reply:its important to us too there is always bacteria on us apparently they eat the waste that our bodies produce, so it would do the same in soil also, to eat the waste that is present
Reply:bacteria decomposes wastes and even bodies.
Why do bacteria grow better at a pH of 7 and fungi at pH 5?
http://sps.nus.edu.sg/~weeeechi/investig...
Why do bacteria grow better at a pH of 7 and fungi at pH 5?
their chemical properties which play a role in their metabolic processes and basic functioning.
preferences are just related to their evolutionary ancestors and where they originated from.
Why do bacteria grow better at a pH of 7 and fungi at pH 5?
their chemical properties which play a role in their metabolic processes and basic functioning.
preferences are just related to their evolutionary ancestors and where they originated from.
How are bacteria cells and animal cells similar? How are they different?
Similar -
1. have DNA to direct formation of proteins
2. have cytoplasm, plasma membrane
3. carry on usual life processes: cellular respiration, reproduction, metabolism, gaseous exchange, ...
Different -
1. Bacteria are prokaryotes with no nucleus or membrane-bound organelles; animal cells are eukaryotic with nucleus and organelles.
2. Bacteria are unicellular; animals multicellular.
3. Bacteria have cell walls outside the plasma membrane; animals have no cell walls.
4. Bacteria have a single circular chromosome; animals have distinct chromosomes.
daphne
1. have DNA to direct formation of proteins
2. have cytoplasm, plasma membrane
3. carry on usual life processes: cellular respiration, reproduction, metabolism, gaseous exchange, ...
Different -
1. Bacteria are prokaryotes with no nucleus or membrane-bound organelles; animal cells are eukaryotic with nucleus and organelles.
2. Bacteria are unicellular; animals multicellular.
3. Bacteria have cell walls outside the plasma membrane; animals have no cell walls.
4. Bacteria have a single circular chromosome; animals have distinct chromosomes.
daphne
How are bacteria and fungi used to make foods that we eat?
Yogurt and cheese - Lactobacillus is the bacteria that is used for these.
Bread, wine/beer - Fungi in the form of yeast are used for these.
Yeast feeds off the sugars that are around and generate carbon dioxide which creates the bubbles that helps bread rise. It ferments the sugars to help make wine and beer.
Bacteria is helped used to process certain foods to alter the way they are - like from milk to yogurt or cheese. The presence of this bacteria helps prevent other bacteria from forming, thus helping to preserve milk by making cheese for example.
How are bacteria and fungi used to make foods that we eat?
fermentation with alcohol, beer, and some other products. Cheeses are acidified by exposure to bacteria, and grow mold for flavor/aroma.
Reply:bacteria and fungi could either be eaten direcly as food or take part in food processing,eg mushroom can be eaten while yeast is also eaten and used in fermenting suger to alcohol
Reply:fermentation
Bread, wine/beer - Fungi in the form of yeast are used for these.
Yeast feeds off the sugars that are around and generate carbon dioxide which creates the bubbles that helps bread rise. It ferments the sugars to help make wine and beer.
Bacteria is helped used to process certain foods to alter the way they are - like from milk to yogurt or cheese. The presence of this bacteria helps prevent other bacteria from forming, thus helping to preserve milk by making cheese for example.
How are bacteria and fungi used to make foods that we eat?
fermentation with alcohol, beer, and some other products. Cheeses are acidified by exposure to bacteria, and grow mold for flavor/aroma.
Reply:bacteria and fungi could either be eaten direcly as food or take part in food processing,eg mushroom can be eaten while yeast is also eaten and used in fermenting suger to alcohol
Reply:fermentation
How are bacteria and fungi used to make foods that we eat?
Yogurt and cheese - Lactobacillus is the bacteria that is used for these.
Bread, wine/beer - Fungi in the form of yeast are used for these.
Yeast feeds off the sugars that are around and generate carbon dioxide which creates the bubbles that helps bread rise. It ferments the sugars to help make wine and beer.
Bacteria is helped used to process certain foods to alter the way they are - like from milk to yogurt or cheese. The presence of this bacteria helps prevent other bacteria from forming, thus helping to preserve milk by making cheese for example.
How are bacteria and fungi used to make foods that we eat?
fermentation with alcohol, beer, and some other products. Cheeses are acidified by exposure to bacteria, and grow mold for flavor/aroma.
Reply:bacteria and fungi could either be eaten direcly as food or take part in food processing,eg mushroom can be eaten while yeast is also eaten and used in fermenting suger to alcohol
Reply:fermentation
Bread, wine/beer - Fungi in the form of yeast are used for these.
Yeast feeds off the sugars that are around and generate carbon dioxide which creates the bubbles that helps bread rise. It ferments the sugars to help make wine and beer.
Bacteria is helped used to process certain foods to alter the way they are - like from milk to yogurt or cheese. The presence of this bacteria helps prevent other bacteria from forming, thus helping to preserve milk by making cheese for example.
How are bacteria and fungi used to make foods that we eat?
fermentation with alcohol, beer, and some other products. Cheeses are acidified by exposure to bacteria, and grow mold for flavor/aroma.
Reply:bacteria and fungi could either be eaten direcly as food or take part in food processing,eg mushroom can be eaten while yeast is also eaten and used in fermenting suger to alcohol
Reply:fermentation
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