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Older bacterial colonies are often more easily decolorized than younger ones due to factors like increased cell wall permeability and the accumulation of metabolic byproducts that can disrupt the integrity of the cell wall. As bacteria age, their cell membranes may become more fluid and less structured, allowing dyes or decolorizing agents to penetrate more effectively. Additionally, older bacteria may have undergone changes that make them less capable of retaining certain dyes, leading to enhanced decolorization compared to younger, more resilient 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 does gram plus hold onto crystal violet and gram - become decolorized?
Gram-positive bacteria have a thicker layer of peptidoglycan in their cell wall, which traps the crystal violet-iodine complex. In contrast, Gram-negative bacteria have a thinner peptidoglycan layer that is easily disrupted by the decolorizing agent, causing the crystal violet to wash out.
What is a nutrient jelly for growing bacteria?
A nutrient jelly for growing bacteria is a solid medium made of agar and nutrients such as amino acids, vitamins, and minerals that bacteria need for growth. It provides a surface for bacteria to grow and form colonies that can be easily observed and studied in laboratory settings.
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.
Why was social mobility more easily achived in the colonies than in Europe?
Because Colonies had everything but Europe didn't have nothing.
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.
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.
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 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.
Why does meat easily spoils in warm places?
Because bacteria grows faster when it's a bit warmer, and too much bacteria in the meat spoils it.
