what is oil immersion and why is it used

Q: Which of the following is an approved sterilant? a. chlorhexidine c. ethylene oxide b. betadyne d.…

A: The process used for the destruction or removal of all the spores, living cells and acellular…

Q: With the aid of a labelled diagram, outline the principle of the oil immersion objective

A: A microscope is an intrument which helps to enlarge microscopic images which are not visible to…

Q: what does chroomatography observation mean

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

Q: What is this test? What coated the bottom of the wells? What were we testing for? How did we know it…

A: The test is ELISA. It is an Enzyme linked Immunosorbant Assay, which is used in many applications.…

Q: Find the amount of dehydrated medium needed to prepare 15 BUTTS, 20 SLANTS, and 25 BUTT-SLANTS.

A: Slants, Butt-slants, and butts are different types of media prepared for bacterial growth. Slants…

Q: If 0.1 ml is added to 99.9 ml medium, this results in a dilution of: Select one: а. 10-3 b. 10-4 С.…

A: Dilution is a process of decreasing the concentration of solute present in a solution. Dilution is…

Q: Give two reasons for heating the slide after the smear is air dried?

A: Smear is the thin film of the sample that is spread over the slide to be observed in the microscope.…

Q: _____ kills pathogens and some spoilage organisms but does not sterilize substances. Tyndallization…

A: Sterilization refers to any process that removes, kills, or deactivates all forms of life, in…

Q: Describe the type of media you choose in the laboratory, use and prepare them ,, I want to describe…

A: 1. Glass slides on which the sample is placed. 2. Cover slip made up of plastic. 3. Dropper 4.…

Q: What is the most efficient disinfectant of the following ( Alcohol, chlorine, soap ,hijyn), and…

A: Disinfectants are chemical agents that are built on inert surfaces to inactivate or kill…

Q: What is the physical appearance (solid, liquid, semi-solid) of following media: agar plate

A: The Agar plate is made from mixing agarose and a growth medium onto a petri dish. Agarose is in a…

Q: What are pure cultures and why are they important? How are spread plates, streak plates, and pour…

A: In science and related fields, a culture plate is a low level lined lab holder for growing a layer…

Q: Why is it necessary to flame the top of the bottle before pouring the plate?

A: Aseptic techniques are used to prevent contamination from pathogens. These are used in clinics and…

Q: RESULTS AND OBSERVATIONS: PARTI: PRECIPITATION BY HEAT TUBE NO. 1 TREATMENT 0.5 mL of 5%albumin…

A: Albumin is a protein. Different forms of albumin are found in blood plasma, egg white, and milk.…

Q: Serial dilution is recommended prior to pour and spread plate. Why is this so?

A: Pour Plate: it is a technique in which A plate made by combining the inoculum which is cooled but…

Q: Choose the combination of answers that most accurately completes the statement.Which of the…

A: Microbial growth is harmful as its presence causes several diseases in humans. Sterilants,…

Q: What is the purpose of adding dishwashing liquid into the banana mixture? What reagent is used in…

A: DNA extraction is the method of isolation of genetic material ( DNA ) from plants , animals or any…

Q: Which of the following can most likely increase the yield of recrystallized benzoic acid?  CHOICES:…

A: Recrystallization is a method that is used for the purification of solid compounds by the removal of…

Q: What do to do when the disstillation did not make the sample completely pure? What could have went…

A: Distillation is a process that is based upon the boiling points of various liquids present in the…

Q: How can polarography detect the analyte?

A: Jaroslav Heyrovsky discovered polarographic method   Polarography is a simple method in analytical…

Q: What are high level disinfectants? What is an example of one? What is the method of action and the…

A: Disinfectants are chemicals that are used to kill the microorganisms present in the surroundings.…

Q: Why is it necessary to use immersion oil when the 100X objective is used'

A: Note - we answer one question at a time. Immersion oil is transparent and has specific viscosity and…

Q: What is the function of immersion oil?

A: Immersion oils are transparent oils that have specific optical and viscosity characteristics…

Q: What are the different types of disinfectants? How is each one different or similar from the others?…

A: Almost every environment on the planet contains bacteria and microorganisms. In fact, on one square…

Q: What is one advantage of a pour plate over a streak plate?

A: The pour plate method is a technique used to count the number of colony-forming bacteria found in a…

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: What are the precautions that should be observed during the experiment for making soap

A: Soap is a fatty acid salt that is used in many cleaning and lubricating goods. Soaps are surfactants…

Q: chemically defined media  b.    complex culture media

A: Media is a growth medium of solid,liquid and semi solid type. Diffarent types of media are used for…

Q: Of what practical importance are air borne microorganisms to the laboratory workers?  What…

A: Questions related to the microbiology labs.  Note: each questions are answered under particular…

Q: What is the purpose of adding sodium bicarbonate to a culture medium?

A: >> The purpose of adding sodium bicarbonate to animal culture medium is that it acts as a…

Q: Test solution Indicator that can be used Initial colour of the solution Final colour of the solution…

A: Litmus paper is a paper which is prepared with the help of litmus solution. It tells about the…

Q: All the following products must undergo sterility testing EXCEPT:  Oral tablets Injections…

A: The healthcare industry uses various medical equipment and instruments that aid in the treatment of…

Q: Apparatus used to add a liquid to a solid in the generation of a gas

A: Kipp's Apparatus is used to prepare gases

Q: Why do we add powdered zinc to the nitrate reduction test?

A: Bacteria are prokaryotic simple unicellular organisms. Their mode of respiration may be aerobic or…

Q: SPECIAL METHOD OF WATER TREATMENT AT THE WATER-WIRED STATION 1. boiling 2. softening 3. ozonation 4.…

A: The specialized water treatment usually includes various types of methods such as physical method…

Q: To measure the culture temperature, why is the thermometer placed in a tube separate from the…

A: A microbe or microorganism is a microscopic organism that is too small to be seen with the naked…

Q: Methyl red test does the color of the medium change to red when methyl red was added? Is it positive…

A: Biochemical method of bacterial identification is a classical method that is used for the…

Q: What are the advantages of solid media  ?

A: Microbial culture is a method of multiplying microbes by allowing them to reproduce in a…

Q: Which is better to use in washing clothes, soap or synthetic detergent? Explain

A: Detergents are the surfactants or the mixture of surfactants. Surfactants are the compounds that…

Q: What is diluent? Why is it useful for working with bacterial samples?

A: Dilution is done to decrease the concentration of the original sample that is being tested. Dilution…

Q: You are asked to add 2 mL of bacterial culture to 98 mL of water. What is your dilution factor? Show…

A: Introduction :- A test to determine whether you have a bacterial infection is a bacterium culture.…

Q: Give the color of the corn mixed with Lugol's iodine solution in these situations:   before…

A: Lugol's iodine contains potassium iodide and iodine in water. It is used for various purposes such…

Q: Alternative name for Moist-heat sterilization Select one: Oven sterilization Autoclaving Ionizing…

A: Sterilization is any technique that eliminates, removes, or disengages every living organism…

Q: why is it necessary to use oil immersion on oil objective ?

A: The oil immersion is the technique of light microscopy, which is used to increase the resolving…

Q: What are the immersion media that need to be used?

A: Immersion media is used to increase the numerical aperture of the microscope by a factor equal to…

Q: Agar is a solidifying agent used in media preparation. How and why does the agar concentration in…

A:

Q: Give the importance of heating as a laboratory technique

A: Heating is an important laboratory technique because it can be used to accelerate chemical…

Q: what practical importance are air borne microorganisms to the laboratory workers?  What precautions…

A: Laboratories are the areas where lot of experiments and research is performed. It deals with lot of…