Why is reproducibility of pipetting critical in performing serial dilutions?

Q: what does chroomatography observation mean

A: Column fractionation was developed in the 1890s as a technique of separating the various components…

Q: why is the tube passed through the flame after removing and before replacing the cap

A: It is a aseptic technique follows during the inoculation of pure culture of microorganism. This…

Q: Why is the MPN test qualitative rather than quantitative?

A: introduction: The Most Probable Number (MPN) method, which replicates liquid broth growth in…

Q: What is the rationale for using different reconstitution and venting methods in different…

A: The rationale is that the patients get pharmaceuticals that are suitable for patient requirements in…

Q: Describe how cellular characteristics are used to categorize grampositivebacilli into major groups.

A: Introduction There are various methods available for the classification of microorganisms such as…

Q: How is the proper amount of water to be filtered determined? Why is this determination critical to…

A: The quality of water shows the water condition including biological, chemical, and physical…

Q: Why are elimination and control samples critical?

A: Biochemistry assay are the process of experiments which are conducted to find out concentration or…

Q: Why is it important to eject a small amount of blood from the syringe sample onto a gauze pad before…

A: Blood gas analysis is a diagnostic test. It gives useful information regarding the respiratory and…

Q: a. Explain whether or not any of the methods in fi gure 2.9 could beused to determine the total…

A: Since, the question a. in incomplete as it requires figure 2.9 to be answered we will answer the…

Q: If you increase the sample size (n) of a sample, will the following values increase, decrease,…

A: Answer :  1. When n increases, the standard error of the sample mean will decrease. This is due to…

Q: Why are the tubes sealed with a rubber stopper rather than left open to the atmosphere?

A: A rubber stopper is used to seal the tube opening as well as other laboratory glassware such as…

Q: turned red after Zn Stayed colorless after Zn turned red after NI and NII Which bacteria possess…

A: Nitrate test is done in the organism to know where they can convert nitrate to nitrite or not. The…

Q: If you performed the serial dilution using 0.9ml of tapwater originally and mixed and transferred…

A: A serial dilution is one of the techniques which is useful in microbiology, serology, and other…

Q: State the four steps of Microarray Anaylsis.

A: Using microarray analysis, it is possible to assess gene expression levels as well as recognise…

Q: If an OD=1.0 culture yielded a plate count of 2.2 x 107 cfu/mL. What is the cell count of an OD=0.5…

A: Answer: The relationship between colony-forming units per millilitre (cfu/mL) and optical density…

Q: At 25°C incubation, what color are colonies of Serratia? red Micrococcus? Yellow At 37°C incubation,…

A: Incubation temperature is a key factor in the development and properties of bacterial colonies in…

Q: How would you design the experiment to determine the CFUs/ml of obligate anaerobic bacterium?

A: Anaerobic bacteria are a diverse group of microorganisms that thrive in environments lacking oxygen.…

Q: Why must a discard tube should be collected first before an anticoagulated tube when using a…

A: Sample collection refers to the collection of blood sample from the pateint for various pathological…

Q: Indicate whether you think that the number of cfu/ ml calculated would be too high or too low if you…

A: Cfu refers to the colony forming unit which is formed through continuous replication of a single…

Q: Why is the incubation temperature criticalwhen using the Filter Method when testing water samples?

A: Incubation temperature is critical for bacterial growth if this temperature is too high or too low…