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Why older bacteria more easily decolorized than younger colonies?
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Why are older bacterial cells more easily decolorized than younger colonies?
OIder bacteria cells are decolorized more easily than younger cells, because as cells age their cell walls become "leaky" and allow molecules to pass more readily out of the cell. In gram stain, the crystal violet-iodine complex is more readily lost during the decolorization step.
Why is it important to start a bacterial culture with a single isolated colony?
It is important for someone who works with bacteria to have a genetically identical bacterial colony so they can test different things on one type of bacteria. Making observations on that one colony is valuable for visual research and identification of that microorganism.
Which food can be easily become infected by bacteria?
Chicken
What nourishes bacteria?
moisture noruishes bacteria. the wet damp atmosphere is an ideal conditions for bacteria to grow. the temperature also has a rapid effect on bacteria, the warmer the climate, the more easily bacteria is grown.
How long does it take to kill bacteria with bleach?
Almost immediately. bacteria are very weak creatures, and are killed easily.
What is opsonized bacteria?
an opsonized bacteria is a foreign pathogen in the human body in which a floating antigen is attached to the epitope (protein on the bacteria) so that a phagocyte can easily recognize the bacteria and engulf and destroy it.
Why was social mobility more easily achived in the colonies than in Europe?
Because Colonies had everything but Europe didn't have nothing.
Why are bacteria often used in biological studies?
They are less complex and their genomes are easily manipulated. The plasmids in bacteria provide an oppertunity for simple genetic recombination exercises. Bacteria can be easily made to be lab dependent so that if an accidental release occured there would be no contamination because the bacteria can not live outside the lab environment.
Advantages of pour plate method over other methods of bacterial colony?
The purpose of the spread-plate technique is to grow and isolate colonies of bacteria. A sample of bacteria is transferred to the agar plate, an environment that provides nourishment for the bacteria to grow. The bacteria sample is applied to the agar plate which a special streaking technique that dilutes the amount of bacteria in each section of the agar plate continuously. This is because if you just swabbed the bacteria onto the plate with no special technique the colonies would grow very densely together and be difficult to study. The streaking technique gradually dilutes the amount of bacteria in each 'quadrant' of the plate, so the last quadrant should have small, isolated colonies that can be easily studied. The spread plate technique is also used for the eneumeration of aerobic microorganisms from the given sample. This can be done by serial diluting the samples, placing 0.1ml of the diluted sample in the middle of an agar plate and spreading the sample over the surface with a help of an L-rod. After the incubation rhe colonies can be counted.
Does freezing kill pneumonia bacteria?
Freezing does kill the bacteria because it freezes the cell movement. Bacteria has to maintain in movement to stay alive. Also when it freezes, it shatters easily. This kills the bacteria almost immediately.
Why does Paine contend that it was not wise for the colonies to win peace too easily the crisis no.1Thomas Paine?
HE SAYS THAT IF THE COLONIES WIN PEACE TOO EASILY THEY WOULD NOT APPRECIATE IT AS MUCH AS IF IT WERE MORE DIFFICULT TO OBTAIN. IN OTHERS WORDS "WHAT WE OBTAIN TOO EASILY WE VALUE TOO LIGHTLY".
What is one reason that Thomas Paine thinks the colonies stand a good chance against the British?
The population of the colonies is extremely high.
