Some cells produce gram-variable results.
Some cells produce no results.
The age of the culture can influence the results.
It has limited usage in environmental Biology and is not as good as molecular techniques.
Different types of materials show up different colors under the gram stain process. For example, gram positive bacteria vs. gram negative bacteria show up differently (as colors) under the microscope using the gram stain vs. the simple stain. You get a blue or purple for a gram positive and a red for a gram negative.
the advantage of staning a sample is that it helps in the identification of the sample by mere colour change without getting into the complete analysis of the sample The disadvantage could be that the cost of stain used for colouration..
Two advantages are that
A: You can see the entire cell and organelles
B: You pick specific organelles to view depending on what stain you use.
Two disadvantages are:
A: It can kill the cell.
B: The stain choosen has to be very specific.
gram staining differentiates between gram negative and gram positive bacteria by showing different colors. it shows blue or purple like color for gram positive bacteria and red color for gram negative bacteria. where as simple stain gives the same color to all the types of bacteria. hence it is difficult to differentiate between them.
easy to observe the morphology,size and shape are the advantages but disadvantages are that sometime distrotion of the cell wall may occur.
David Dikuyi
acid fast staining or Ziel Neelson staining for observing Mycobacteria tuberculosis or Koch bacilli from sputum sample.
There are many disadvantages to stain and not staining cells before viewing them. One disadvantage of gram staining is that the cells cannot be alive while being stained, so viewing live stained cells is impossible.
One of the disadvantages of heating fixing is that it is very expensive. Secondly, it cannot be used in capsular staining.
Advantages: Being Able to hear Disadvantages: Being Deaf, Having an ear infection isnt it obvious?
its a secret........................................................
advantages: you can clearly see the color of the object. you can use living samples it requires little or no preparation of the sample disadvantages: uses low magnification
It is a great disinfectant if used in the right concentration. Unfortunately, the downside is staining of plastics or surfaces.
acid fast staining or Ziel Neelson staining for observing Mycobacteria tuberculosis or Koch bacilli from sputum sample.
Advantage: non-destructive to the sample Disadvantage: High detection limit
A large trial is necessary to provide good sample that is representative of the population
Advantages of cluster sampling include that it's inexpensive, fast, and simple. A disadvantage is that it is known to have a high sampling error.
One advantage of inferential statistics is that large predictions can be made from small data sets. However, if the sample is not representative of the population then the predictions will be incorrect.
Advantages: easy to carry out, natural shape and side Disadvatages: heat fixing can distorte cells, more attention needed
Advantages and Disadvantages of equity
advantages and disadvantages
Pine has a number of disadvantages including: a lot of resinous knots, prone to denting and it will always require the application of a preservative before staining and painting. Some of the advantages of pine include its ability to blend with other pieces of furniture as well as it relatively low cost http://uk.ask.com/question/what-are-the-advantages-and-disadvantages-of-pine answer from
advantages and disadvantages of recession