The Difference Between
What kind of medium is blood agar plate differential or selective?
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Asked in Biology, Microbiology, Bacteria
Is a sucrose agar plate selective or differential?
Asked in Microbiology
Nutrient agar that contains vancomycin is it selective or differential?
Asked in Microbiology
Why is mannitol salt considered to be a differential media?
MSA is a selective as well as a differential media. Mannitol is the differential part, it indicates organisms that ferment mannitol. If mannitol fermentation is occurring, lactic acid will be produced, and the pH will drop causing the MSA plate to turn yellow. The salt portion is selective for halophiles; organisms that cannot withstand a high salt content will be unable to grow well.
Asked in Science, Java Programming
List two methods for obtaining isolated colonies.?
What is the difference between nutrient agar plate and blood agar plate?
Asked in Geology, Earthquakes, Plate Tectonics
Which one contain perforated holes baffale plate or weir plate?
Asked in Repossession, Microbiology, Bacteria
Is EMB plate and MacConkey plate the same?
So here is the deal, same use different recipies different results to do the same thing. I'll just post some lecture notes and hope that helps: MacConkey's Agar (enterics) Selective for gram negative Crystal violet and bile salts prevent non-enterics Differential for lactose fermentation Non-fermenter --> white/clear colonies Fermenter--> red/pink colonies Eosin Methylene Blue (EMB) (Weakly selective for intestinal pathogens) Selective for gram negative Eosin and methylene blue inhibit gram positive growth Differential for lactose fermentation Lactose fermenters produce a green-metallic sheen Non-fermenters do not NOTE: EMB Agar is not in common use anymore
Asked in Microbiology, Blood, Bacteria
Why is the catalase test performed on a slide instead of directly on the blood agar plate?
Care must be taken if testing an organism cultured on a medium containing blood because catalase is present in red cells. If any of the blood agar is removed with the colony, a false positive reaction will occur. It is usually recommended, therefore that catalase testing be performed from a blood-free culture medium such as nutrient agar.
Asked in Biology, Biotechnology, How To
How to culture a bacteria?
Culturing a bacteria means increasing it's numbers so that you can see its colonies with the naked eye. This is usually done using a culture medium - (an agar plate of some sort, with either a differential or selective base medium), which is a source of nutrition for the bacteria, allowing them to reproduce and grow in ideal conditions. The original bacterium is placed on the culture medium using aseptic technique (to avoid contamination), and is then usually incubated inverted. The bacteria will then reproduce and form colonies, which can then be seen by the naked eye. The colonies' characteristics (shape, colour, margin etc) will then be noted and these details will be used to identify the strain of bacteria present if the bacteria was being cultured for identification purposes.
Asked in Chemistry, Microbiology
How do you detect acid and gas production using solid medium?
Asked in Animal Behavior, Microbiology, Zoologists
What is the feathered edge of a blood smear?
When a patient needs certain blood work done for testing of potential conditions, one way of testing the blood is by doing a blood smear. A blood smear is done by doing a finger prick, extracting a drop of blood, and placing the drop of blood on a glass laboratory microscope plate. Once the drop of blood is on the glass plate, a separate glass plate is used to spread the drop of blood out. It is done by "smearing" the blood across the bottom plate. The desired and only lab-accepted "smear" results in a feathering of the blood, or a increasingly thinning of the amount of blood across the plate, in turn creating a feathered appearance of the blood on the plate. It helps the lab chemists look at the right amount of blood for determining the results of the blood test.
Asked in Chevy Suburban
How do you remove rear differential fluid in 1999 suburban?
What is the answers to puzzle 6 in Professor Layton and Pandora's Box?
Puzzle No 6: Pile of pancakes 1 (UK) ,or Pancake Stacks 1 =Put little pancake on red plate the put medium pancake on second plate then put the little pancake on top of medium pancake then put huge pancake on red plate then put little pancake on first plate then put medium pancake on red plate then put little pancake on red plate. Please see the related link below for a walkthrough of this puzzle.
Asked in Animal Life, Microbiology
What are the surface colonies on a pour plate larger than those within the medium?
Asked in Technology
Why is the orifice plate called a variable head flow meter?
Asked in Biology, Microbiology
What is the difference between EMB agar and MacConkey agar?
MacConkey agar plate and EMB are both selective for gram negative enteric and coliforms. They have inhibitors to stop growth of gram positive bacteria such as staphylococcus. Both media are also differential for fermenters. MacConkey agar plate contains lactose but EMB also contains sucrose in addition to lactose. Moreover, MacConkey agar plate has bile salt that inhibits gram positive bacteria, but EMB contains aniline dyes (methylene blue and eosin).
Asked in Health, Biology, Microbiology
How do bacillus and cocci differ on agar?
That really depends on what agar you are growing them on. If you are using growing agars such as BHI or blood, both will grow, and you won't be able to tell the difference when looking at them on the plate. If you use a selective agar that, lets say, will only grow cocci, then the bacilli won't grow. Or vice versa, if your selective agar only grows bacilli, then the cocci won't grow. If you use a differential agar, it may turn one a different color than the other -- for example, it may turn the bacillus blue, and the cocci may turn red. It is all dependent on the media you choose to grow your samples.
Asked in Science
Why the capacitance of a parallel plate capacitor increases on introducing a dielectric medium between plates?
Asked in Microbiology
What is the technique you used in purify the bacterial culture on a plate?
Asked in Microbiology
What is the purpose of blood in the blood agar medium?
The erythrocytes in blood agar serve two purposes: as a source of food for the growing bacteria and as a diagnostic indicator for certain types of bacteria. There are two types of red blood cell hemolysis, referred to as alpha (or complete) hemolysis and beta (or incomplete) hemolysis. The presence of alpha or beta hemolysis on a blood agar plate is diagnostic for certain types of bacteria.