What is the difference between a Hemin test and a Benzidine test?

Q: A food sample with an unknown number of contaminating bacteria was serially diluted to 10-6. A…

A: Serial dilution of a food sample containing unknown quantity of contaminating bacteria was performed…

Q: Which microorganism has a positive Buffered Azide Glycerol Glucose Test? Streptococcus agalactiae…

A: ANSWER;-Streptococcus Faecalis

Q: How would you determine the contents of the test tubes if all of the samples were transparent?

A: The study of chemical reactions that occurs within living organisms is called biochemistry. This…

Q: The sediment observed in stained blood smear caused by: a) Overstraining b) More Haematoxylin in the…

A: Here we have to explain about why sediment observed in stained blood smear.

Q: Give two ways to prevent the diffusion of oxygen into the medium in this test.

A: The main two ways to prevent the diffusion of oxygen are given below.

Q: Do zwitterions interfere with the different color reaction tests?

A: A molecule with a charge of zero and at least two functional groups, one positive and the other…

Q: During a flame test, why is it necessary to use a new splint for each element?

A: A splint is a thin wood/stick used commonly in laboratory for performing a flame test. The splint is…

Q: What is the purpose for testing a specimen for hydrogen sulfide production?

A: Hydrogen sulfide is produced when a bacterial strain reduces the sulfur compounds.  The specimens…

Q: What do to do when the disstillation did not make the sample completely pure? What could have went…

A: Distillation is a process that is based upon the boiling points of various liquids present in the…

Q: Why is there a need to use acids and boil the sample in maceration?

A: Maceration is a common method of obtaining medicinal plants, it is an extraction process in which…

Q: Which type of isolation precaution is used for a patient with tuberculosis? a) Contact isolation b)…

A: Isolation precautions are infection control methods implemented to hinder the transmission of…

Q: Explain how to perform the following tests and how to interpret their results: Nitrate test

A: The nitrate test is a chemical test used to determine the presence of nitrate ions (NO3-) in a…

Q: If a technician collect 1 ml blood in 2.5 ml light blue tube: a) Reject the sample and cancel the…

A: Introduction The light blue tube is also known as "citrate tube". This tube is used to collect blood…

Q: What special precautions must be taken when using the oil immersion (100x) objective?

A: Using oil immersion reduces the air gap between the glass slide and the objective lens. This air gap…