The following are major free radical scavengers except: A Superoxide dismutase B Catalase C Glutathione D Glutamine

Q: 1.     An organism that has peroxidase and superoxide dismutase but lacks catalase is most likely an

A: Peroxidase - are enzyme which breaks up the peroxides (R-OO) into R-OH and R'-OH Superoxide…

Q: The following enzymes are substrate specific except?? a. urease b. glucose oxidase c. alkaline…

A: Various chemical reactions that take place in the environment are divided into different categories.…

Q: What characteristics of a water molecule make it polar? Give two examples of why this property is…

A: The molecule is made up of two hydrogen atoms and one oxygen atom. The bonds between the atoms are…

Q: What type of molecule is shown here? Give its biological importance? ÇH2OH но OH test question 3.png…

A: It is the structure of glucose molecule.    It is present in pyran ring form.  So it is called gluco…

Q: Would an obligate anaerobe or an obligate aerobe be more likely to produce catalase? Why?

A: Introduction :  obligate anaerobes are those bacterium that can live only in the environment…

Q: Why do microbes need the following elements? In what molecules do you find these elements?…

A: Microorganisms need a sufficient supply of water and other substances including mineral elements,…

Q: Which of the following would be best for sterilizing a pre-sealed case of plastic medical supplies?

A: Answer - Autoclave

Q: Organism 1 Organism 2

A:

Q: The optimum growth pH for a microorganism is usually:  4,5,7 or 8

A: pH is the scale on which the acidity or alkalinity  is measured. It is the scale between 1 to 14.…

Q: Why do some bacteria grow in the presence of salts?

A: Carl woese in 1990, devide living world in three groups or domains Archaea, Bacteria and Eukarya.…

Q: Which of the following identified atoms (dashed arrow) is classified as an electrophile ? OH D A В

A: Electrophile accepts a pair of electrons to form a new covalent bond where the molecule forms a bond…

Q: An obligate halophile requires higha. pH b. temperature c. salt d. pressure

A: There are many kinds of microbes that live in a variety of environment like salt, under high…

Q: The original Penicillin drug causes bacterial osmotic lysis due to the breakdown of the cell wall in…

A: An antibiotic is a type of antimicrobial substance active against bacteria. They either kill(…

Q: Why is immobilization a good strategy for dealing with uraniumpollution?

A: Uranium (U) is a radioactive chemical element of the actinoid series of the periodic number with an…

Q: Many antibacterial hand soaps contain the chemical agent _____ , which belongs to the _____…

A: Sodium hypochlorite is commonly used chemical agent in mildew remover for prevention of infection…

Q: Define and differentiate the following terms: a.Halophilic , b.Capnophilic, and  c.Microaerophilic

A:

Q: Which of the following antibiotics inhibits bacterial folic acid synthesis?…

A: Folic acid enzymes are crucial for the synthesis of amino acids,hence important for the synthesis of…

Q: Which statement among A-D is false regarding physical and chemical agents of control? A) O Effective…

A: Sterilization and pasteurization are equivalent processes because both are used to kill…

Q: Analogies Photosythetic bacteria: sulfur compoinds:: A. Chemoautotropic bacteria: sulfur compound…

A: Analogy is a process of passing on the meaning or information from one object to another. It uses…

Q: Which of these disinfectants is least effective against E. coli? a. Chlorine b. o-phenylphenol c.…

A: Disinfectants: These are the chemical compounds which are applied on the non living objects to kill…

Q: What is obligate aerobe and obligate anaerobe?

A: Microorganisms are divided into two categories anaerobes and aerobes. These categories are based on…

Q: There happens to be an outbreak of diarrhea caused by a bacteria in a nearby town. Upon…

A: Diarrhea is a condition in which a person experiences watery, loose and frequent bowel movements. It…

Q: Which of the following is used in the reaction called saponification stong base hydrogen gas none of…

A:

Q: Given the following common laboratory materials, which of the three methods of heat sterilization do…

A: Sterilization is the used to kill the microorganisms or other pathogens from a substance or…

Q: Which of the following is/are a nucleophile(s) at pH 12? O guanidinium O hydroxyl O thiol amine Both…

A: Amino acids are compounds containing carbon, hydrogen, oxygen and nitrogen and serve as monomers of…

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: Describe and give the principle of autoclave, Hot Air Oven and a Hot Plate used for sterilization in…

A: Sterilization in microbiology: This technique is used for the killing of the harmful bacteria on the…

Q: I need hand written solution

A: Global oxygen delivery (DO2) is the total amount of oxygen delivered to the tissues per minute,…

Q: Why would it be beneficial for bacteria to form endospores

A: Endospores are the non-reproductive structures that are produced by the bacteria. They are dormant…

Q: Identify the oxidizing agent in the following REDOX reaction?  CI2 + NaBr --> NaCI + Br2 A) NaCI…

A: A redox reaction can be defined as a chemical reaction in which electrons are transferred between…

Q: Which of the following apply to silver as a chemical inhibitor of microbial growth? Acts as a…

A: Sterilization is the method of removal or killing or elimination of live cells from any surface.

Q: All of the following are cofactors of SOD (superoxide dismutase) EXCEPT? A. Zinc B. Maganese C.…

A: Introduction The enzyme superoxide dismutase catalyses the dismutation (or partitioning) of the…

Q: Compare and contrast the action of alcohols, halogens, and ­oxidizing agents in controlling…

A: Alcohol is used as disinfectant for centuries.Alcohol is extremely effective in fight against single…

Q: Explain the mechanism of denaturation for each agent: 1. Heavy metals 2. Organic solvents 3. Heat…

A: Proteins are important biopolymers present in living systems. They are involved in various…

Q: how it is possible for certain microbes to survive and grow in the presence of cyanide, which would…

A: Cyanides are rapidly acting toxins that can be lethal. The working mechanism of cyanide involves its…

Q: determination of microbial motility, why do you think the microorganisms are ubiquitous?

A: Solution : The motility test is used to determine whether an organism is motile or non-motile.…

Q: Give one effect of the following problems encountered in Histotechnique. a. Insufficient clearing b.…

A: Microtomy is a method  which is used for cutting very thin section of hard tissues and bones . It…

Q: What are the main types of immobilization techniques used in biosensors? (with a deep explanation)

A: Immobilization It is a technique that is used for the chemical and physical fixation of the…

Q: ph Minimum Optimum Maximum Escherichia coli 4.5 7 9 Pseudomonas aureus 4.5 7.5 9.5 Staphylococcus…

A: The change in the number of live cells in the population of bacteria over the period is…

Q: What medical challenges do biofilms present?

A: Biofilms are microbial colonies that are linked to one another and enclosed in an exo-polysaccharide…

Q: How would you classify Halobacterium salinarium as to salt needs? Check one.--------Obligate…

A: Archaea consist of single-celled organisms domain. These microorganisms lack a nucleus and thus…

Q: Growth medium: You are running different experiments on microbes and need to make sure you choose…

A: A growth medium is a solid/ liquid media designed to support the growth of a population of…

Q: Many culture media produce colorful solutions due to the presence of which are water soluble organic…

A: Colony color or pigmentation is mostly exploited characteristics of bacteria which aids in the…

Q: Extreme halophiles survive in environments that contain a high level of _______.   Question 7…

A: High salinity describes an intense setting that comparatively few bodies have been prepared to…

Q: Which of the followings is not and electrophile? +NO2 CH2=CH2 Fe+3 BF3

A: Electrophiles are chemicals that have the ability to attract electrons. Usually, these molecules…