Clinical Chemistry I ASCP review 2023 QUESTIONS & ANSWERS ( A+ GRADED 100% VERIFIED)

Clinical Chemistry I ASCP review 2023 QUESTIONS & ANSWERS ( A+ GRADED 100% VERIFIED) Which of the following lamps provides a continuous spectrum of radiant energy in the visible, near IR, and near UV regions of the spectrum? A. Tungsten-filament B. Hydrogen C. Deuterium D. Mercury vapor -Correct AnswerA most common light source for photometry in the visible region. continuous spectrum (360-800 nm). near IR and UV. Hydrogen and Deuterium (200-375 nm) Mercury vapor- not a continuous spectrum, emitting radiation at specific wavelengths Which of the following isolates light within a narrow region of the spectrum? A. Photomultiplier tube B. Monochromator C. Photovoltaic cell D. Detector -Correct AnswerB Use for selecting a narrow band wavelengths from a continuous spectrum. Three kinds (prisms, filters, diffraction gratings. Which of the following is not descriptive of a photomultiplier tube? A. Emits electrons proportionally to initial light absorbed B. Must be shielded from stray light C. Cannot be used with a chopper D. Amplifies the initial signal received -Correct AnswerC PMT- responds to the radiant energy light it absorbs by emitting electrons in a proportional amount to the initial light absorbed. Which of the following is false about a photomultiplier tube? A. Converts radiant energy (light) to electrical energy (current) B. Amplifies the current significantly C. Has a very rapid response time D. Is composed of an iron plate and a layer of selenium -Correct AnswerD is part of a barrier layer cell PMT- 1. light to electricity 2. Amplification 5. Which type of photodetector employs a linear arrangement that allows it to respond to a specific wavelength resulting in complete UV/visible spectrum analysis? A. Photomultiplier tube B. Phototube C. Barrier layer cell D. Photodiode array -Correct AnswerD 256-2048 arranged in a linear fashion Respond to a specific wavelength that results in a continuous UV/ visible spectrum. When performing spectrophotometer quality assurance checks, what is the holmium oxide glass filter used to assess? A. Linearity B. Stray light C. Absorbance accuracy D. Wavelength accuracy -Correct AnswerD In spectrophotometric analysis, what is the purpose of the reagent blank?