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What evidence is there that sodium hydroxide diffuses into an agar block?
One way to demonstrate the diffusion of sodium hydroxide into an agar block is to immerse the block in a sodium hydroxide solution and observe a color change in the agar due to the pH increase from the diffusion of hydroxide ions. Another method is to measure the change in pH at various points within the agar block over time after exposure to sodium hydroxide, showing the penetration of the chemical into the block. Additionally, using indicator dyes in the agar block can visually represent the diffusion of sodium hydroxide through the color change of the dyes.
What is the effect of the chloride ion concentration on its rate of diffusion in agar?
Increasing the chloride ion concentration will generally increase its rate of diffusion in agar. This is because a higher concentration gradient will drive chloride ions to diffuse more rapidly through the agar medium. Ultimately, diffusion rate is directly proportional to the concentration gradient of the solute.
Which method often results in colonies developing down throughout the agar and some colonies on the surface?
The pour plate method often results in colonies developing both down throughout the agar and on the surface. This is because the pour plate involves mixing the bacteria with the agar before pouring it into the plate, allowing for colonies to form at different depths within the agar.
Theory of gas diffusion coefficient of acetone using winkelmann method?
The theory of gas diffusion coefficient of acetone using the winkelmann method is to diffuse the gas into a volatile liquid. This can be done by confining the liquid in a small narrow tube and observing the rate of evaporation.
Why is an air freshener a good model for diffusion?
An air freshener is a good model for diffusion because it releases particles into the air that spread out and distribute evenly over time. This process mimics how molecules move from areas of high concentration to areas of low concentration, which is the fundamental principle of diffusion. The gradual diffusion of the air freshener particles creates a pleasant scent throughout the space.
Why is diffusion slower in the agar than in water?
Diffusion is slower in agar than in water because agar is a gelatinous substance that contains solid particles which obstruct the free movement of molecules. This impedes the diffusion of molecules through the agar compared to the unrestricted movement in water, which lacks solid particles.
What evidence is there that sodium hydroxide diffuses into an agar block?
One way to demonstrate the diffusion of sodium hydroxide into an agar block is to immerse the block in a sodium hydroxide solution and observe a color change in the agar due to the pH increase from the diffusion of hydroxide ions. Another method is to measure the change in pH at various points within the agar block over time after exposure to sodium hydroxide, showing the penetration of the chemical into the block. Additionally, using indicator dyes in the agar block can visually represent the diffusion of sodium hydroxide through the color change of the dyes.
What is the effect of size of uptake on diffusion in agar?
larger the size, the smaller the surface area to volume ratio, hence the slower the rate of diffusion into the agar jelly :)
In the diffusion of liquids through agar what characteristic of liquid determines the rate at which it will travel through the agar?
The size of the molecules.
What is the difference between Kirby-Bauer and mueller-hinton?
Kirby-Bauer is the diffusion method you would use to test antibiotic sensitivity. The Mueller-Hinton is the agar plate in which you would do the method on. This is where the antibiotic discs would be places to test the sensitivity.
What is the effect of the chloride ion concentration on its rate of diffusion in agar?
Increasing the chloride ion concentration will generally increase its rate of diffusion in agar. This is because a higher concentration gradient will drive chloride ions to diffuse more rapidly through the agar medium. Ultimately, diffusion rate is directly proportional to the concentration gradient of the solute.
What process would cause acid to move through agar jelly?
Acid can move through agar jelly by a process called diffusion, where molecules move from an area of high concentration to an area of low concentration. The acid molecules will spread evenly throughout the agar jelly until they reach equilibrium.
Stimulus Diffusion ?
The spread of an underlying principle
What is the most significant method of capillary exchange?
diffusion
How does the thickness of agar affect the diameter of the zone of inhibition?
A thicker layer of agar may lead to a larger zone of inhibition due to the increased diffusion distance for the antimicrobial agent. The agar thickness can influence the rate of diffusion of the antimicrobial agent into the agar, impacting the size of the zone of inhibition formed around the antimicrobial disk.
What is the physical principle upon which kidney dialysis is based on?
Diffusion
What is the method called when the bacteria sample and nutrient agar are mixed before pouring?
Pour plate method
