The primary concern with using bleached paper products for food is: lead dioxin O methylmercury O pesticides O microorganisms

Q: Match the most appropriate method of sterilisation for the following items. 10 mL vitamin solution 5…

A: Any physical or chemical process that deals with the elimination or removal of both spores and…

Q: Why 10% bleach disinfectant are most against probiotic?

A: Disinfectant is a chemical liquid that destroys bacteria,  thereby causing disinfection.

Q: As the temperature of pasteurization increases, the time of treatment decreases. True False

A: Pasteurization is a technique by which some of the liquid foods such as milk, fruit juice etc is…

Q: Insecticides play important role in insect pest control, write down a comprehensive note on the…

A: Insecticide may be described in the form of a substance or combination for killing, repelling, or…

Q: What is the appropriate dose (chlorine, ozone, ultraviolet rays) to sterilize water per 100 cubic…

A: Hi! Thank you for the question! Since the appropriate dosage of ultraviolet rays is not known, the…

Q: How to prepare tryptone agar, tryptone broth and tryptone soft agar from other chemical contents and…

A: Tryptone is formed by the enzymatic digestion of casein by the trypsin enzyme. Tryptone is used as a…

Q: The single most important measure to prevent the spread of disease is handwashing handwashing…

A: Diseases are abnormal conditions in the health of an individual. It can affect the structure or…

Q: To prevent inclusion from occurring during precipitation, the technique to follow is I. filter…

A: When an impurity takes up a lattice site in the carrier's crystal structure, inclusion takes place.…

Q: A chest x-ray exposes you to roughly 40 millirems of radiation. How many chest x- rays would you…

A: Option (b) the radiation can cause chemical changes in the food.

Q: How can we make soap?

A: Soaps are the salts of fatty acids. Soaps are generally used as surfactants for washing cloths,…

Q: The following strip of chromatography paper has been placed in a polar solvent Which pigments the…

A: In chromatographic techniques, including paper chromatography, the lighter molecules will travel the…

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: Alcohol as a disinfectant can be effective against all of the following except

A: Alcohol exists in two forms- ethyl alcohol and isopropyl alcohol.Alcohol has germicidal…

Q: is recommended for hand antisepsis. Alcohol-based hand rub Hand emollient Washing hands between…

A: Ignas Semmelweis is known as the person who saved many lives by discovering the importance of hand…

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: How will you detect microorganisms in food?  Please briefly explain at your own words

A: A growth medium is intended to promote the growth of a variety of microorganisms or cells by the…

Q: What media should you use to cultivate the following microorganisms:   E.coli Haemophilus sp.…

A: Most microbiological experiments require culture media in order to acquire pure cultures, develop…

Q: Bacteria are not used as probiotic agents. True O False The growth of bacteria that form endospores…

A: Bacteria are prokaryotic microorganisms. Bacteria are ubiquitous in nature and are found almost in…

Q: All recipes are given per litre unless specified.   Lambda Broth (LB) Plates…

A: Give, The final volume (V2) = 5mL. The stock concentration of MgSO4 (C1)= 1M The desired…

Q: 1) The use of natural products in classification is called

A: Trees, fungi, animals, and microorganisms generate natural products, which are chemical substances…

Q: Detergents are______.

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

Q: How do you sterilize the following? petri dish inoculating loop culture media test tube…

A: Sterilization of following- petri dish - By using autoclave or by a series of steps that includes…

Q: Which one of the following statements about liquid media is false Select one: a-is prepared without…

A: Liquid media are growth medium used in the microbiological experiments. They can provide a medium on…

Q: Identify the microorganism/ group of microorganisms involved in the spoilage of the following food:…

A: Spoilage of food products causes great harm to the manufacturer and also to the people consuming it…

Q: Why would hydrogen peroxide be an effective disinfectant?

A: We have to answer why hydrogen peroxide can be an effective disinfectant.

Q: A chemical tastes sour, turns litmus paper red and is of phenolphthalein. Which of the following…

A: Every chemical compound has a distinct physical and chemical properties. Physical properties include…

Q: What temperature is considered adequate for achieving sterilization of a compost pile?

A: temperature considered for achieving sterilization of a compost pile is 135-160 F. At a…

Q: Which of the following is NOT a physical method of microbial control?

A: Sterilization is defined as a process of complete elimination or destruction of all forms of…

Q: Which of the following is incorrect about food irradiation? 1) It alters the nutritional value of a…

A: Food Irradiation is a process in which food is exposed to ionizing radiation. The process improves…

Q: Name the thing which is not used for disinfection of drinking water.

A: Water from natural water bodies contains various disease-causing germs or pathogens which can cause…

Q: Alcohols are used for   sterilization. disinfection. antisepsis. both sterilization and…

A: Antiseptic, disinfectant, and sterilization are different techniques used for the control of…

Q: Besides dehydrated foods, how might the amount of water available to microbes be decreased? Group of…

A: Dehydration is a method that has been used for centuries to preserve foods such as raisins, etc. It…

Q: what type of chemical eliminates microbes by mechanically transporting them away

A: Surfactants are compounds that cause wetting action between surface and dirt or microbes. These…

Q: The counterstain in the Gram stain is: A basic dye A negative stain A mordant An acid dye Necessary…

A: Staining is a method for enhancing contrast in material, usually on a tiny scale. Histology, as well…

Q: The benefits of properly using radioactivity include al Treating cancer in human beings. Ob)…

A: Radioactivity refers to the emission of ionizing radiation by unstable atomic nuclei. This…

Q: Q\ what is the difference between sterilization . disinfectant & surfactant ?

A: Under normal conditions, pathogens can cause contamination of the surface that might lead to…

Q: clean” means reducing the level of harmful microbes to a safe level on food contact surfaces using…

A: There are several processes in microbiology that are required to get rid of germs on a particular…

Q: Which process gets rid of the most germs on a surface? decontamination disinfection sterilization

A: Removal of microorganisms from surfaces such as benchtops in a microbiology laboratory and in…

Q: Why are contaminants such as TCE (trichloroethylene) and PCB (polychlorinated biphenyls) so…

A: The most difficult aspect of removing TCE and PCBs is:They easily adsorb onto organic matter in the…

Q: Which of the following apply to alcohols?  Mark ALL that apply: - disinfect items that are soaking…

A: Alcohol is an organic compound that carries at least one hydroxyl functional group bound to a…

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: Explain in 1-2 paragraph Make an introduction about paints and their ingredients(specific with…

A: Paints are pigmented liquids that are used for protecting the objects or for coloring and providing…

Q: What is the purpose of iodine in the Gram stain?   To act as a counterstain   None of the other…

A: There are various staining techniques that are used to stain different cellular structures. The Gram…