Superoxide ion is toxic to strict anaerobes because they lacka. catalase b. peroxidase c. dismutase d. oxidase

Q: murting Kitrate to nitrite itrogen yas 15. Denitrifying bacteria need which of the following…

A:

Q: When hydrogen peroxide is placed on a colony of an unknown bacterium, bubbles form. Based on this…

A: Correct option is, (d) Is catalase-positive.

Q: Coliform bacteria are common contaminants of meats. Why might one expect to find coliforms in…

A: Coliform bacteria is a Gram negative, rod shaped bacteria which when present in water will indicate…

Q: Methanogens are classified as ____.   a. chemoautotrophs   b. photoautotrophs   c.…

A: Energy is required for the growth and survival of all living organisms. Bacteria are prokaryotic…

Q: Which of the O Microbe C O Microbe D O Microbe E

A: Beta-hemolysis:- Is a Complete lysis of red blood cells in the media around and under the colonies…

Q: Drying is an effective antimicrobial strategy because:(a) It oxidizes cellular macromolecules(b) It…

A: Answer is b.) It limits the amount of water available to microbes.

Q: If an acid-fast bacterium is detected in a clinical sample, thenthe organism could bea) Cryptococcus…

A: Answer- Those bacteria that resist the decolorization with acid alcohol because of the nature of…

Q: A strictly fermentative bacterium produces ATP A. by glycolysis only. B. by photosynthesis only. O…

A: Answer C  is correct.

Q: Which of the following cause human food-borne illness:  a. Lactobacillus acidophilus b. adding…

A: Microorganisms impact the lives of humans in various ways:- a) Microorganisms as friends- Several…

Q: Choose the combination of answers that most accurately completes the statement. An important test…

A: Answer is c.)  production of oxidase.

Q: Chemoautotrophs can survive on ____________ alone.a. minerals b. CO2 c. minerals and CO2 d. methane

A: Chemoautotrophs are the organisms that acquire their energy by the oxidation of inorganic or organic…

Q: The large tanks used in industrial production of antibiotics are termeda. digesters b. fermentors c.…

A: Antibiotics are drugs that are useful for stopping the infections caused by bacteria. This is done…

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: Psychrophiles would be expected to growa. in hot springs. b. on the human body.c. at refrigeration…

A: it is a bacteria

Q: The most versatile method of sterilizing heat-sensitive liquids isa. UV radiation b. exposure to…

A: Sterilization is a process of removing or killing or deactivating mostly all forms of life present,…

Q: commercial sterilization is designed to provide enough heat to destroy the endospores of what…

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

Q: explanation on how a cultured bacteria should be able to cause disease in healthy organism once…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: Which bacterium does not have gelatinase enzymes O A. Staphylococcus aureus B. Bacillus subtilis O…

A: Gelatin hydrolysis test is used to identify the bacteria which can digest or degrade the gelatin by…

Q: To digest cellulose in its environment, a fungus produces a/ana. endoenzyme b. exoenzyme c. catalase…

A: In the rigid cell walls, the most important major component in plants is cellulose.  Cellulose can…

Q: Benzoic acid is an antimicrobial chemical naturally found inwhich of the following foods?a) Apples…

A: The unicellular minute organisms which are not visible from the naked eye are known as microbes.…

Q: Milk is usually pasteurized by a. the high-temperature short-time method c. batch method b.…

A: Pasteurization is the process, in which bacteria are killed and the sterilization is done to improve…

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: Many people use antimicrobial soap to kill bacteria on their hands. However, overuse may increase…

A: Antibacterial soap is a soap which contains chemical ingredients that purportedly assist in killing…

Q: a) Anoxic sludge digestion is a secondary waste water treatment; what are the major microbial…

A: Waste water management includes two major steps : Primary treatment and Secondary treatment. In…

Q: Which of the letter labeled microbes is exhibiting gamma-hemolysis? O Both Microbes A and B O…

A: Blood agar is an example of enriched medium that has multiple nutrients and is used as a basal…

Q: Spread plating_is used to sterilize the spreader or Lrod: a. Ethanol bHeating over flame C.…

A: Spread plate technique  is used to isolate bacteria . It is a microbiological technique .

Q: On your groupmate's DCC plate, you can see mucoid bacterial colonies with clearings underneath. What…

A: Principle of Deoxycholate Agar: - It has dipotassium phsophate as a buffer, so  Lactose fermenters…

Q: A) A short paragraph on the habitat of the organism. B) A short paragraph on the special…

A: A) Pseudomonas aeruginosa is commonly found in soil, water & vegetations. It is also found as a…

Q: During plasmolysis, the volume of water will_________. During lysis, the volume of water will…

A: Ans: Plasmolysis: It is the process where cells tend to lose water when they are kept in hypertonic…

Q: Silver sulfadiazine is useda. in antisepsis of burns b. as a mouthwash c. to treat genital gonorrhea…

A: Silver compounds are used as disinfectants in medical devices and as ointments to prevent biofilm…

Q: During plasmolysis, the volume of water will__________. During lysis, the volume of water…

A: Water is the most abundant substance present in a cell. It constitutes almost 70% of the cell mass.…

Q: Discuss the actions of the ditterent chemical agents in controlling microorganisms: L phenols 2.…

A: Chemical agents plays a major role in eradication of microorganisms from the environment.

Q: 1. A. Hemoglobin B. Albumin C. Casein D. Gelatin The protein which does not answer the aldehyde test…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Chlorinating swimming pools is an example of______________ to control microbial populations. A.…

A: Disinfection of swimming pool means killing all the pathogenic microorganism species in the pool…

Q: Biogas is a useful product of anaerobic decomposition. Lütfen birini seçin: O a. True O b. False

A: Anaerobic decomposition or anaerobic digestion is the process in which organic material is converted…

Q: I need help with question 43 thank you

A: Sterilization by heat is one of the key factors for eradicating the microbes. The heat has the…

Q: On what basis were both Shigella and Salmonella eliminated aspossible causes of the outbreak…

A: Shigella and Salmonella are pathogens that cause gastroenteropathy in humans. They are two genera…

Q: Your nasal sample showed colonies with a clear halo around them on blood agar. What can you…

A: Question - Your nasal sample showed colonies with a clear halo around them on blood agar. What can…

Q: Microorganisms are used in the production of a wide variety of fermented products. a) Using an…

A: Microbes are essential components of human life. They are a great role in our day-to-day activities.

Q: MacConkey (MAC) Agar is used to isolate gram-negative enteric bacteria. Peptone provides nutrients…

A: MacConkey (MAC) Agar MacConkey (MAC) Agar is both the selective and differential media. It is…

Q: a) Define 'Disinfection' and 'Sterilization' OR differentiate between them. b) Enlist the different…

A: the definition is, basically, that a disinfectant kills vegetative microorganisms, however not the…

Q: HCl is involved in a. All of the above b. antimicrobial activity. c. protein denaturation. O d. D…

A:

Q: used for

A: These are used as starter cultures. These are commercially important bacteria.

Q: Chopped garlic often contains C. botulinum endospores and iscommonly sold submerged in olive oil,…

A: C. botulinum endospores is a potent nerve toxin that is rare and causes a paralysis disease called…

Q: a) explain in your own words how to do a nitrate reduction test to identify unknown bacteria

A: Biochemical test such as nitrate reduction test and phenol red test are used in the identification…

Q: A strictly fermentative bacterium produces ATP A. by glycolysis only. B. by photosynthesis only. OC.…

A: Introduction The process of respiration can be aerobic or anaerobic. The process of anaerobic…

Q: (i) Explain the effect of the ionising radiation on the bacteria. (ii) Identify the purpose of petri…

A: Given here is the effect of ionising radiation on the growth of salmonella typhimurium in the…

Microbial Physiology

Microbial physiology is the branch of microbiology that is associated with studying the physiology of fungi, bacteria, and viruses. It is an important field of science concerning functional genomics and metabolic engineering.

Chemotaxis

The organism’s movement in a particular direction as a response to certain chemicals that are available in the environment is defined as chemotaxis. In brief, it can be defined as the occurrence of an organism’s movement in response to a certain chemical stimulus.