Q: Explain how to correctly use the microscope using oil immersion.
A: Light tends to bend while entering one material from a different one. The refraction of light…
Q: I have a microscope with oculars that are 20x and am viewing a slide using oculars that are 50x.…
A: Introduction An instrument used to magnify small objects called a microscope. Even at the cellular…
Q: If 5X instead of 10X oculars were used with the same objectives now on your microscope, what…
A: Microscopy means the use of microscope for studying the cells. Microscope is an indispensable…
Q: A researcher was measuring the absorbance of yellow food coloring. What wavelength should he use on…
A: Light is a form of radiant energy, it is a narrow band of energy within the continuous…
Q: Define the terms magnification and resolution.
A: Microscope is an instrument used to see the objects that cannot be seen by naked eye. The use of…
Q: Alternatives used on a light microscope might improve vision by using a different light source. Name…
A: Microscopes are used to observe specimens or samples of a minute size that cannot be observed by the…
Q: What is Audiometer? When is it used?
A: An Audiometer is a subjective device that is used to evaluate the hearing threshold of a person. It…
Q: Which part of the light microscope controls the intensity of light entering the viewing area…
A: Correct answer: Diaphragm
Q: Trace the path of light from the light source through the microscope in the correct order: O…
A: With the help of a microscope, an image of the small objects can be enlarged. In this way, minute…
Q: What’s the total magnification for 5x and 44x in a microscope
A: When the size of the image is compared to that of the object that created the image in the first…
Q: Calculate the diameter of the field of view for each total magnification on your microscope in…
A: Field of view is the area that can be seen under the microscope at one time. There is an inverse…
Q: What is working distance and how is it related to magnification?
A: Working distance is the distance between the object and the front end of the lens. A microscope has…
Q: Explain why an image must be centered in the field of view when using low power before moving to a…
A: Microscopy is the field of biology that deals with viewing objects that are not visible to naked…
Q: Compare AAS, AES and UV-Vis spectrophotometer
A: The most sophisticated spectrophotometers are AAS, AES and UV-vis spectrophotometers. They each have…
Q: Which of the following is true about the relationship between depth of field and magnification?…
A: The depth of field refers to resolution in the longitudinal plane. It is measured as the distance…
Q: How do you identify which objective lens are you using to view your sample?
A: microscope objectives feature a range of magnifications from 1.25x to 150x. This is the first…
Q: Demonstrate how to view an object with the microscope using all magnifications
A: Answer: Introduction: Microscope is defined as an optical instrument consist of optical lenses for…
Q: What is the parts and its functions of fluorescence spectroscopy and uv vis instruments
A: Spectroscopy is the study of the absorption and emission of light and other radiation by matter.
Q: What is the relationship between the working distance of an objective lens and its magnification…
A: Microscope is an optical instrument that uses a lens or an arrangement of lenses to magnify an…
Q: What is the total magnification of a specimen viewed with a 10x ocular lens and a 45x objective…
A: The correct ans is 450X. The total magnification of specimen viewed with a 10x ocular lens and 45x…
Q: When using the 40X objective, the total magnification is
A: The total magnification of microscope must be calculated by multiplying the magnification of eye…
Q: If a microscope ocular lens has a power of 10x and the objective lens has a power of 20x then the…
A: Introduction: For imaging, optical microscopes combine ocular and objective lenses (eyepieces). The…
Q: Enumerate the different kinds of blanks used in spectrophotometry
A: Introduction : Spectrophotometry is a method used to analyse molecules quantitatively based on how…
Q: If you are using a microscope and a specimen takes up 1/4 of the field of vview at 1000X, what is…
A: Magnification = 1000X Specimen takes 1/4 of the field of view.
Q: Why don’t most light microscopes use 303 ocular lenses for greater magnification?
A: The ‘human eye’ is the most valuable and sensitive sense organ. It is a natural optical instrument.…
Q: Calculate the diameter of the field of view for each total magnification on your microscope in…
A: Field of view (FOV) is the diameter of the circle of light that can be seen while looking into the…
Q: Describe the process of bringing a specimen into focus using a compound light microscope.
A: A microscope is an instrument that can magnify specimen which is otherwise too small to be seen,…
Q: How can one obtain 2,000× magnification with a 100× objective?
A: Magnification means how many times the image is larger than the object.
Q: When using the 10x lens to view a specimen, what is the total magnification of the specimen to the…
A: When using the 10x lens to view a specimen, what is the total magnification of the specimen to the…
Q: What is the main application of Atomic absorption spectrophotometer (AAS)?
A: The Atomic Absorption Spectrophotometer (AAS) is primarily used to quantify the presence of several…
Q: What do you mean by Auxanometer?
A: The process of plant development can be easily studied by the activity of the meristem. The…
Q: Give two applications of Spectrophotometric analysis and briefly explain each
A: The spectrophotometer is an instrument that uses an electromagnetic spectrum. This instrument is…
Q: Provide an illustration and brief description of the pathway of light in relation to magnification…
A: Introduction :- A microscope is a device that magnifies images of small objects, allowing the…
Q: What is the diameter of the field of view (ie. Diameter2) when the total magnification is 100X?…
A: Field of View is the diameter of the circle of light visible through the microscopic lenses.
Q: Discuss if visual observations match with spectrophotometric analysis results.
A:
Q: Describe how you would use a compound light microscope with the 4 objective lenses to view a…
A: A compound microscope is a microscope with more than one lens and its light source. In this type of…
Q: What major advantage does phase-contrast microscopy haveover staining?
A: Phase-contrast microscopy is an optical microscopy technique used in cells. When the light passes…
Q: Total magnification of a specimen using the high objective and the ocular lens is
A: B) 40Ox 400 x is the typical magnification of an ocular lens.
Q: At what magnification you can see the largest area on your slide? 2. At what magnification you can…
A: Microscopes are used for viewing those specimens which are very minute and cannot be seen through…
Q: Which spectrophotometer mode should you use to calibrate the instrument and which mode should you…
A: Spectrophotometer is an optical instrument that is used to measure the light intensity relative to…
Q: Why did we calculate, rather than measure, the diameter of the field of view on medium and high…
A: A microscope is an instrument used to visualize objects that are extremely small in size and cannot…
Q: What is the differences between ocular magnification and objective magnification?
A: Introduction A microscope's objective lens is the one near the sample at the bottom. It's an…
Q: Which power (low or high) will magnify the object more?
A: Microscopes are used for viewing objects that are small to see via eye clearly without…
Q: In a tabular form, enumerate the different components of a spectrophotometer and explain its…
A: A spectrophotometer is an analytical equipment that is used to measure the absorbance of light by…
Q: Rowena was tasked to measure the actual magnification of her specimen mounted on a slide without…
A: A microscope is a piece of scientific equipment which magnifies very small objects that are too…
Q: While using a microscope, when do you use immersion oil? a. When viewing a slide under the 100x…
A: INTRODUCTION When viewing stained smears under 100x we use immersion oil. That can increase…
Q: Define magnification and resolution
A: In biology, i can define the term magnification and resolution on the basis of microscopy.
Q: Provide a list of the names of the devices and technologies used in Dynamic Light Scattering applied…
A: Dynamic Light Scattering (DLS) employs a measurement method to identify the particle size in…
Q: what is experimental error that may occur when reading spectrophotmeter
A: Spectrophotometry is a technique for determining how much light a chemical substance receives by…
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- QUESTION 3 Photochemical smog is characteristic of urban areas with many vehicles and a climate that is ____. a. cool, wet, and sunny b. cool, dry, and sunny c. cool and cloudy d. warm and sunny e. warm, wet, and cloudyWhat is the wavelength of a 6.76 x 1012 /s wave? Sorry im just really stuck on this question, Please dont leave any minor detail in the question, And also may u step by step this equation.Question 6 Below is a BSA standard curve and the duplicate values of absorbance for 3 samples. Calculate the concentration of BSA in each sample and say if the standard curve is adequate for each of these samples? Why or why not? If not, what would you do to fix this? Show your calculations.
- The magnesium electron spectrum has a line at 266.8 nm. Does it have a greater speed in a vacuum (an area without an atom or particle) than does red light with a wavelength of 652 nm? Why or why not?QUESTION 8 Because _____ is colorless and odorless but can be highly toxic, it is important to have home detectors for it. a. nitrous oxide b. carbon monoxide c. ozone d. methane e. carbon dioxideQuestion 14 a) Radioactive decay produces ionising radiation. Like all ionising radiation this can lead to harmful effects on living tissue due to cell damage including damage to DNA, mutation and cell death. Contrast the differing health risks associated when working with alpha, beta or gamma radiation sources. b) Describe some ways in which those working with radioactive sources and people in general can be protected against the risks of radiation exposure from such sources.
- Why do green light waves have less energy than blue light waves?This question is based on Bovine Serum Albumin I would like help on answering letters a-c. This lab examines the relationship between the absorbance of light by a solution at 595 nm and the concentration of the Coomassie Blue dye-BSA protein complex in the solution. State whether the following descriptions of the lab experiment are valid or not, and explain why you say Yes or No: a. The experiment would be significantly more accurate if absorbance readings were recorded for a range of wavelengths, not just for 595 nm b. The experiment has limited accuracy because it does not account for the absorbance of light by the other components (components that are not the dye-protein complex, such as excess dye that is not bound to any protein) of the solution. c. The absorbance reading measures practically all the protein content in the solutionsQUESTION 46 When a photon of light is absorbed by chlorophyll the chlorophyll becomes “excited” or energized and loses an electron. the chlorophyll molecules emit light. hydrogen ions are released. ATP is split into ADP, phosphate, and energy immediately. a greater number of light wavelengths can be absorbed.
- Question 21>In 1668, Francesco Redi performed a series of experiments on spontaneous generation. He began by putting similar pieces of meat into eight identical jars. Four jars were left open to the air, and four were sealed. He then did the same experiment with one variation: Instead of sealing four of the jars completely, he covered them with gauze (the gauze excluded the flies while allowing the meat to be exposed to air). In both experiments, he monitored the jars and recorded whether or not maggots (young flies) appeared in the meat.What hypothesis was being tested in the initial experiment with open versus sealed jars?A.The type of meat used affects the likelihood of spontaneous generation.B.Spontaneous generation can occur only if meat is exposed to air.C.Spontaneous generation is more likely during the long days of summer.D.Maggots do not arise spontaneously, but from eggs laid by adult flies.QUESTION 16 Photochemical smog is composed of secondary pollutants such as oxidants, aldehydes, and ____. a. ozone b. sulfur dioxide c. carbon dioxide d. VOCs e. NOxQuestion 6 sample result of ESR is below. a. Kwame - 34yrs -7mm/hr b. Adjoa - 55yrs - 10mm/hr c. Musa - 52yrs - 74mm/hr d. Anita - 27yrs - 40mm/hr e. Charles - 30yrs- 90mm/hr f. Chioma - 27yrs - 20mm/hr Reference ranges Males below 50yrs 0-15mm/hr Female below 50yrs 0-20mm/hr Males over 50yrs 0-20mm/hr Females over 50yrs 0-30mm/hr (I) Comment on test result a, c, d, & f (II) If you are a laboratory scientist, will you validate sample b & e? If yes why and if No why. (III) ESR is non-specific. How? (IV) Why is ESR high in females