Why can’t nitric acid stains be removed by washing?
Q: What is the difference of washing from hand disinfection?
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Q: Why is it necessary to flame the top of the bottle before pouring the plate?
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Q: grades of alcohol are used in dehydration for staining
A: Dehydration of tissues is carried out to remove the water in the tissue before embedding because…
Q: What is the difference between simple stains anddifferential stains?
A: Simple stains : It generally make all of the organisms in a sample appear to be the same color even…
Q: How is household bleach like a weapon against pathogenic bacteria?
A: pathogenic bacteria are those bacteria which can cause disease . they have to be eradicated .
Q: What would happen if you had skipped the heat fixing step and continued with the staining procedure?
A: There are various staining methods are used for staining the bacteria, namely simple staining,…
Q: What structural characteristics are necessary for good drying oil?
A: Drying oils are the ones which get hardened into a tough film when they are exposed to air. These…
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A: Methylene blue is a popular dye that allows us to glimpse microscopic life in vibrant colors. Before…
Q: Distinguish between a sterilant, a disinfectant, and anantiseptic. What is cold sterilization?
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Q: In a hurry one day, you merely rinse your lunch disheswith water. As you are drying your salad bowl,…
A: Polar molecule have regions that have opposite charges due to presence of uneven numbers of…
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Q: How can polarography detect the analyte?
A: Jaroslav Heyrovsky discovered polarographic method Polarography is a simple method in analytical…
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A: Ethidium bromide is utilized during separation of fragments of DNA by agarose gel electrophoresis.…
Q: Glycerin on microscope slides serves for
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: Which stains are selective in microbiology?
A: INTRODUCTION Gram staining, acid fast staining, capsule staining and volutine granule staining are…
Q: Why is it necessary to know the accurate proportion in mixing bleach and water in cleaning and…
A: Bleach is a strong disinfectant. It has a active ingredient sodium hypochlorite; an effective…
Q: What is the difference between an antiseptic and a disinfectant? Can the same chemical be used for…
A: Antiseptic Disinfectant 1. These can slow down the growth as well as can kill the…
Q: what is oil immersion and why is it used
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Q: what does it mean if a pigment (let' say 'yellow') traveled beyond the solvent front in paper…
A: Paper chromatography is the process of separation technique which involved in speraration of…
Q: How can you tell that the dark wet spot on the paper towel is fat and not water?
A: The properties of water and lipid are different.
Q: List the Comparison of Positive and Negative Stains.
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Q: What happens when you mix oil and vinegar? Why?
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A: The preparing a slide that has to be observed under a microscope there are multiple steps that are…
Q: Can we use maceration to extract volatile oils? why or why not?
A: Plants produce volatile oils, which are odorous natural compounds. They are in charge of the…
Q: Why do we use oil with microscope ?
A: ••In light microscopy, in order to increase the resolving power we use oil Immersion techniques
Q: True- False Acetone is the safest solvent for cleaning an objective lens.
A: The micro-organism is the organism that is too small to be seen with the naked eye. It is viewed by…
Q: What is the difference between an antiseptic and a disinfectant?
A: Antiseptic and disinfectants are used to kill germs, bacterias which attack from outer environment.…
Q: The most commonly employed chemical test to determine the presence of blood in stain found at the…
A: Answer is option E"Teichman's test". this test is also called by names haematin crystal acid test or…
Q: in paper chromatography what is the basis of pigments separate?
A: Paper chromatography is a technique in which different types of pigments can be separated from each…
Q: Why do we need to stain microorganisms?
A: Microbiology is the study of microbes. Microorganisms include bacteria, fungus, archaea, and…
Q: Why must alcohol be diluted with water to about 70 % percent before it could be used as an effective…
A: 70% isopropyl alcohol is most commonly used as disinfectant and killing all surface microorganisms.…
Q: What is the pH of bleach?
A: pH is the measure of the acidity or basicity of a solution. pH can be defined as the negative…
Q: How does soap dissolve grease and oil?
A: Oil and water do not combine because water is polar, whereas the fatty particles in the oil, grease,…
Q: Aside from Paraffin, what is your recommended infiltrating medium for routine purposes? why?
A: INFILTRATION is the process in which the clearing agent is completely removed from the tissue and…
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A: Ultraviolet (UV) radiation is a part of electromagnetic spectrum that lies between X- rays and…
Q: household bleach reduces microbes because it is a member of what group of chemicals? a. halogen b.…
A: Small organisms that are not visible to naked eyes are called microbes or microorganisms. It…
Q: What macromolecules does DAPI stain? What are its advantages and disadvantages?
A: Genetics is the branch of biology that deals with genetic material like DNA, RNA, inheritance.…
Q: Why acids and boiling are necessary in maceration?
A: Maceration refers to an extraction process that enables contact between a solvent and the plant for…
Q: What chemicals are used for the Simple Stain from our lab experience? Check all that apply. carbolic…
A: Simple staining: * The process staining the bacterial cell with a dye to see bacterial structure…
Q: How does soap clean away dirt?
A: Soap is a cleansing agent used to clean dirt and kill microbes present on a surface. It is made by…
Q: Why do acidic dyes not stain bacterial cells?
A: Stains may be divided into two classes based on the nature of their charged group Basic/ cationic…
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A: Hello, Thank you for posting questions. We follow company rules of answering one question at a time…
Q: Dilute silver nitrate is sometimes applied to the eyes of newborn infants. Explain why a dilute…
A: Eye is an organ which helps us to provide vision it has several photoreceptors which receives light…
Q: What is the purpose of setting the spectrophotometer to zero absorbance using a blank solution?
A: Spectroscopy is a procedure utilized for the evaluation, portrayal, and basic investigation of a…
Why can’t nitric acid stains be removed by washing?
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- In staining, why is there a need for contrasting stains?Dilute silver nitrate is sometimes applied to the eyes of newborn infants. Explain why a dilute solution is used rather than concentrated.What chemicals are used for the Simple Stain from our lab experience? Check all that apply. carbolic acid mycolic acid phenol acid fuschin malachite green safranin nigrosin iodine ethanol methylene blue crystal violet carbol fuschin Congo red acid-alcohol O O O O O O O O O O O O O O
- Why is it necessary to know the accurate proportion in mixing bleach and water in cleaning and disinfecting high-touch surfaces daily in household common areas like tables, hard-backed chairs, doorknobs, light switches, or phones?What are some ill effects of improper use of bleach in households cleaning?what is active ingredient, mode of action and level of activity in BleachThe shape of hair is determined in part by the pattern of disulfide bonds in keratin, its major protein. How can curls be induced? Explain chemically the basic steps (type of chemical and order) of what a hairstylist would use to treat the hair.