Q: Compare and contrast Benedict’s Test, Reagent Test, and Iodine Test in terms of materials used
A: Benedict's Test is used to test for simple carbohydrates. The Benedict's test identifies reducing…
Q: Define briefly the term radioactivity.
A: Radioactive atoms contain energy that pours out spontaneously as energetic subatomic particles or…
Q: How to count the number of colonies forming units per milliliter (CFUs per ml) of the sample?
A: A viable cell is one that has the ability to divide and form a colony. The colony-forming unit (CFU)…
Q: Give applications of fluorimetric analysis with respect to A) determination of metal ions by the…
A: Fluorometric analysis is a method of chemical analysis in which a sample when exposed to radiation…
Q: Analyze chemically defined and complex media, describing theirbasic differences and content.
A: Media is used in the microbiology lab to culture microbes.
Q: Explain and define cold gelation.
A: Gelation (gel transition) is the formation of a gel from a system with polymers. Branched polymers…
Q: Explain why specimens should be taken aseptically and processed quickly to ensure accurate results,…
A: Microbiology is the study of microscopic organisms, such as bacteria, viruses, Achaea, fungi and…
Q: Which type of radiation is most likely to be used for isotope scanning?(a) alpha(b) beta(c) gamma
A: A radionuclide scan is an imaging method that utilizes a little dose of a radioactive chemical…
Q: Drugs are extracted from body fluids and tissues bycarefully controlling the ___________ of the…
A: Extraction of drugs from body fluids and tissues plays a major role in criminalistics.
Q: In the context of the laboratory, what is meant by the term "background?"
A: Science is a term which is used for the study of the subject which is based on the facts and…
Q: tate the apparatus used view small samples
A: The world is full of organisms. Organisms have developed from minute single celled structures to…
Q: Why would the optical tweezers be a method superior to dilution and liquid enrichment for obtaining…
A: Optical tweezers have been used to trap dielectric spheres, viruses, bacteria, living cells,…
Q: Write shortly about the instrumentation of ATR spectroscopy? Answer should be to the point.
A: ATR(Attenuated Total Reflectance), is the sampling technique used in infrared spectroscopy (IR) to…
Q: A water sample contaminated with chloride ion, how can you estimate the sample purity?
A: Water in its pure form is referred to as the universal solvent. It this form it is tasteless,…
Q: What are the advantages and disadvantages of the filter method in the analysis of water samples?
A: Utilising the membrane filter method, test is gone through the layer utilising a filter funnel and…
Q: Advantages and disadvantages of the following dosage forms: ○ Suspension ○ Parenteral Solutions ○…
A: A drug is described as a substance that is used for illness diagnosis, prevention, and treatment.…
Q: How are clinical chemistry test results used to confirm or rule out a presumptive diagnosis? Why is…
A: Any medical test's primary goal is to assess if a patient does or does not have a specific disorder.
Q: Describe two methods of water analysis.
A: Water could dissolve most of the biological molecules in it and so it is known as a universal…
Q: Describe in detail the process of electrospray ionization ?
A: Ionisation is done by high voltage. Ions spread evenly on a surface. Ionised liquid gives rise to…
Q: Differentiate spectroscopy, spectrometry, and spectrophotometry
A: The study of the interaction of matter with electromagnetic radiation as a function of the…
Q: Do you think rules and guidelines on laboratory safety and chemical handling are designed to hinder…
A: Laboratory handling and chemical handling is important for saving our life. Laboratory handling…
Q: What are the two principal types of mass spectrometry?
A: Mass spectrometry is used to determine the mass-to-charge ratio of ions and separate them according…
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: What is “Autoradiography”? This method enables the determination of which macromolecule labeled with…
A: The techniques which provide images are useful in biological studies because they provide insight…
Q: Define disinfection. Define sterility. Compare and contrast disinfection with sterility.
A: Microorganisms are responsible for various diseases and food spoilage. It is therefore important to…
Q: In a spectrophotometer, what should be the appearance on the graph if the sample is pure? presence…
A: Spectrophometry is a widely used technique in identification and confirmation of chemical…
Q: Enlist th five differences between crude media and defined media.
A: Microbiology uses different types of culture media for the growth, culturing, and study of different…
Q: types of condensers are
A: The function of a Condenser in the microscope is to collect the light from light source and…
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…
Q: Describe microbial sampling procedures for solid foods suchas meat.
A: Food may serve as an important source of pathogenic organisms and therefore it is necessary to…
Q: For a simple routine qualitative analysis, why is an early morning sample of urine used for the…
A: Qualitative analysis is one of the effective way to diagnose various diseases. The sample for…
Q: Explain the use of mass spectrometry (MS) ?
A: Mass spectroscopy is a laboratory analytical tool. It is used to detect the mass-to-charge ratio of…
Q: For microprojectile bombardment, the particles used are typically? a. Nickel b. Tungsten O c.…
A: Ttransformation is a biotechnological process where a foreign DNA molecule is inserted into the host…
Q: In sterilization, which among the supplies, instruments, glassware, etc. under the list of materials…
A: Sterilization is a process of killing unwanted microbes on the surface of medical or industrial…
Q: The technique of bombarding specimens with neutronsand measuring the resultant gamma ray emissions…
A: Neutrons are the subatomic particles present in the nucleus of an atom.
Q: Which are the toxic chemicals used in preparation of samples for TEM? How should these be handled…
A: Microscope helps to observe the organisms or objects that can not be seen by our naked eye because…
Q: How is storage and transportation affect your samples results in general?
A: The collection of samples for laboratory testing is critical in the evaluation and monitoring of the…
Q: Why annealing, denaturation temperatures are different? Please answer at your own words.
A: Question: Why annealing, denaturation temperatures are different?
Q: When a sample presents some matrix interference, which of the ff. are carried out? Dilute sample to…
A: shift in analytical results caused by one or more specific constituents in the matrix, generally…
Q: RODAC plates are used for Select one: Water sampling Air sampling Sterility testing Surface…
A:
Q: Describe the difference between batch and continuous culture techniques
A: Bacteria and fungi, for example, are extremely valuable to a wide range of industries.…
Q: Illustrate the different solid tubed media formed 1. Deep/Butt solid tubed media 2. Slant solid…
A: The selection of media is a crucial point in determining the generation of contamination-free…
Q: The chemical precipitation method can be used for ceramic nanoparticles production. * TRUE FALSE
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: Name the desirable characteristics of chemical control agents.
A: In most cases, chemical agents aren't designed to sterilise. The majority of the time, pathogens are…
Q: For a simple routine qualitative analysis, why is an early morning sample of urine used for the…
A: Urine analysis is considered a medical screening to identify disorders like kidney disease,…
Differentiate individual sampling and pooled sampling in dissolution.
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- Write shortly about the instrumentation of ATR spectroscopy. Please do not reject.Define Facultative as used in biodemography.Why is it important to select immiscible solvents when performing liquid-liquid extraction? In general, how can you determine which layer (aqueous or organic) is on top, and which is on the bottom?
- To analyze a sample by mass spectrometry, the sample must consist of gas phase ions. a) Explain why it is difficult to make gas phase ions of proteins. b) Generally explain how electrospray ionization turns proteins in solution into gas phase ions.From a water sample, you must determine the number of colonies present (CFU's/ml.). However, looking at the plates of the dilutions you find some cultures with scattered colonies. Briefly explain the reason for eliminating or not considering these plates in the data collection. Short answer please..Describe in detail the process of electrospray ionization ?
- In a spectrophotometer, what should be the appearance on the graph if the sample is pure? presence of salt and protein?For a simple routine qualitative analysis, why is an early morning sample of urine used for the tests, and not a sample collected after a meal?How are clinical chemistry test results used to confirm or rule out a presumptive diagnosis? Why is this important and give references.