At which wavelength is UV radiation most germicidal? Explain.

Q: What characteristics of a water molecule make it polar? Give two examples of why this property is…

A: The molecule is made up of two hydrogen atoms and one oxygen atom. The bonds between the atoms are…

Q: On the basis of the formula for resolving power, explain why asmaller RP value is preferred to a…

A: The microscope has good resolving power and magnification. Resolution means determines the…

Q: Heavy metals can denature proteins. What are some denature going agents?

A: Answer Proteins are involved in all almost all biological processes.  For a protein to function…

Q: What does the absorbance at 280 nm detect? O aromatic amino acid side chains O chaotropic salts O…

A: Absorption at any wavelength detects the presence of specific compounds or biomolecules in a sample.…

Q: Explain the reason as to why Hershey and Chase did not take carbon as radioisotope but 32р as the…

A: Hershey and Chase conducted their experiment on E. coli bacteria to determine the genetic material.…

Q: Why do some materials exhibit fluorescence when exposed to ultraviolet light?

A: It is a phenomenon by which certain materials absorb photons that are high-energy(UV) and re emit as…

Q: How do nanopores work?

A: DNA sequencing is a method to determine the arrangement of nucleotide within DNA. It is used to…

Q: Why is immobilization a good strategy for dealing with uraniumpollution?

A: Uranium (U) is a radioactive chemical element of the actinoid series of the periodic number with an…

Q: Design an experiment to isolate microorganisms able to degrade starch. Explain step wise

A: Starch is a polysaccharide present abundantly in plants and generally deposited in granule form in…

Q: How do we understand biological effects of ionizing radiation?

A: The basic mechanism of the biological effects of ionizing radiation.

Q: Explain why you can use OD675 (optical density at a wavelength of 675nm) as a proxy for cell density…

A: Algae are group of predominately aquatic, photosynthetic, and nucleus bearing organism lacking true…

Q: What wavelength is most suitable for quantitative analyses for an analyte exhibiting the UV-Vis…

A: Quantitative analysis is the method of determination of concentration of an analyte where teh amount…

Q: What is the difference between fluorescence and phosphorescence?

A: When an atom or a molecule returns to the ground state from an excited state it emits radiation…

Q: what are the biological effects of ionising radiation

A: Ionizing radiations are the radiations which carries higher energy and these radiations  are able to…

Q: b) Consider the quenching of an organic fluorescent species with 70 = 6.0 ns and ką = 3.0×10$ dm³…

A: We need to calculate the concentration of quencher which is required to reduce fluorescence…

Q: Why is one pigment more soluble than another? Consider Figure 4.5.

A: Chlorophyll is a pigment present in the thylakoid membrane of chloroplast in a plant, very crucial…

Q: What are the characteristics of an acidic dye? Of a basic dye? Indicate whether methylene blue is an…

A: Dyes are colored compounds that are used as coloring agents in laboratories, textile industry, etc.…

Q: Young's double slit experiment is one of the quintessential experiments in physics. The availability…

A: To calculate the fringe separation between the second-order and central fringe in Young's…

Q: Name the four key stages of the mechanism of biological damage due to radiation. (II) Briefly…

A: Ionizing radiation can affect the atoms in living things, so it poses a health risk by damaging…

Q: Describe some applications of ionizing and ultraviolet radiation.

A: APPLICATION OF IONIZING RADIATION it can be used in smoke detectors. It can be used in…

Q: Free radical chlorination (Cl2, hv) is not very selective. Which of the following compounds will…

A: Mono-chlorination of an alkane that makes a differentiating one of the hydrogens in the alkane with…

Q: Write a note on detection of biomolecules by CuS nanoparticles?

A: Detection of Biomolecules by CuS Nanoparticles -- We have to understand what in Nanoparticles , how…

Q: Why are the streak plates made from a sample of coconut water incubated at 7°C?

A: Answer: STREAK PLATE METHOD = This is the method to culture bacterial growth in microbiology…

Q: Paper Chromatography question 1. If there are two unknown samples yielded the same Rf value in the…

A: Paper chromatography is technique of seperating mixture of components based on their distribution…

Q: Draw a schematic diagram of a double beam fluorescence spectrophotometer.          Explain the…

A: Fluorescence spectrophotometer: It is a type of electromagnetic spectroscopy which analyzes…

Q: what is the difference between volatile oils and fixed oils in terms of degradation?

A: Oil is a triglyceride that is liquid at room temperature. It is a nonpolar chemical substance that…

Q: define the term multicolor banding,

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: What is the main difference between SPME and u- SPE?

A: Note - we answer one question at a time.   Solid-phase micro-extraction is an extraction process for…

Q: 6 (a). From the following diagram, what would the name of the newly created dissacharride be? TYPE…

A: Disaccharides  Disaccharides are the molecules that are made up of two sugar molecules.

Q: Why is ionizing radiation more harmful to children than adults?

A: The cells are basic structural and functional units of life. The human body contains many types of…

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