Q: Which of the following is NOT a chemical method of microbial control? a) refrigeration b) ethyl…
A: In order to stop the spread of infections and diseases, microbes must be under control. Thereby…
Q: What statement correctly explains why moist-heat is more effective than dry-heat for sterilization…
A: The aseptic technique is devoid of any organism that is achieved in laboratory set-up through…
Q: equires oxygen at a lower concentration than typically found in air. Question 3 options: a)…
A: Throughout nature, aerobic and anaerobic environments can be found in diverse niches. These…
Q: * Thermophiles grow at .28 Low salts O High temperature High oxygen O Low pH O
A: The organism that grows and lives in an acidic or low pH environment are called acidophiles.
Q: A strictly fermentative bacterium produces ATP A. by glycolysis only. B. by photosynthesis only. O…
A: Answer C is correct.
Q: Microbial growth is measured by what parameter?(a) Increased cell size(b) Increased size of cellular…
A: The term microbial growth can be defined as the growth of the population or an increment in the…
Q: In microbiology, the term growth in a culture usually refers to an increase in O 1) the number and…
A: Microbes are the microscopic appearance creatures that are not visible to the naked eye. These…
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: A microbicidal agent has what effect?a. sterilizesb. inhibits microorganismsc. is toxic to human…
A: Microbicidal is the biocidal compound that used to reduce the infectivity of the microorganisms such…
Q: Lipopolysaccharide (LPS) is a major feature of which cell wall? O Fungal O Viral O Gram-positive…
A: Lipopolysaccharide are large molecules consisting of a lipid and a polysaccharide. They are found as…
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 common microbiological contaminant of air is:(a) Spores from bacteria (d) Gram-positive…
A: The unicellular minute organisms which are not visible from the naked eye are known as microbes.…
Q: Some hyperthermophiles can survive autoclaving temperatures. Are they a concern in health care?
A: Hyperthermophiles can't multiply at room temperature if they survive autoclave temperatureThey can…
Q: The thermal death point refers to: 1) The time it takes to kill an organism in an autoclave 2) The…
A: As more and more microbes were discovered and identified as the cause of various infections or…
Q: Denitrifying bacteria require a carbon source. The dosage is the amount of chlorine used. An aerobic…
A: Denitrification is the microbial process of reducing nitrate and nitrite to gaseous forms of…
Q: Bacteria are thermophiles. Select one: O True O False
A: Bacteria are a type of biological cell which belongs to the prokaryotic domain. Bacteria are the…
Q: You observe a culture of bacterial cells that has been grown in liquid thioglycolate media and…
A: Thioglycolate broth is a differential medium enriched with several nutrients such as casein, yeast…
Q: Tilogell gas ng hitrate to nitrite 15. Denitrifying bacteria need which of the following conditions…
A: According to the guidelines we have to answer first 1-2 question rest you can ask separately thank…
Q: Growth of microbes in a solid media is identified by the formation of? a) Pellicle at the top of…
A: A culture medium or growth medium is may be liquid, solid, or semi-solid designed to promote growth…
Q: The genus name of this free-living aquatic microbe is It uses for motility and a(n) to prevent…
A: This is a picture of free-living aquatic microbes. It has one central nucleus with several yellow…
Q: Give description to each of the ff. Piezophiles Halophiles Thermophiles Cryophiles Acidophiles…
A: Introduction An extremophile is an organism that thrives in extreme environments, Depending on their…
Q: ou are given an unknown bacterium in the lab and have to determine unknown bacterium's oxygen needs.…
A: Each living organism has certain kind of respiration process for synthesizing energy by breaking…
Q: Iimited. 2 Brewer's Anaerobic Agar (BAA) Anaerobic 3 Jar 4 Candle Jar
A: Various media with specific compositions are used in microbiology as selective or differential…
Q: The bacteria Listeria monocytogenes is capable of doubling every 36 hours in the refrigerator at 4°C…
A: Psychrophiles The word psychrophile is derived from a combination of two words, "psychro" and…
Q: Which of the following diseases is/are associated with "Biofilms'
A: Biofilm can be defined as a polymer encased community of microbes(bacteria) that accumulates at a…
Q: Bacteria that thrive in puncture wounds are likely to be (a) aerobes (b) photoautotrophs (c)…
A: Aerobes are the organisms that live and reproduce only in the presence of free…
Q: do a bit of research to find a microbe that also has odd growth requirements (i.e. it can break down…
A: Introduction : A microbe is a tiny living entity that can only be observed under a microscope. Some…
Q: Explain the difference in Microbial Inhibitory Concentration and Microbial Bactericidal…
A: Antibiotics are antimicrobial agents that are specifically used to inhibit the growth of bacteria.…
Q: Food microbiology involves the following, except _______________ . a. fermentation b. western…
A: Introduction :- The study of microorganisms that colonise, alter, and process food as well as those…
Q: Some purple nonsulfur bacteria utilize solar energy but require an organic carbon source. They are…
A: in order to answer the question, lets look at the following table to understand the various…
Q: Human pathogens are generally which type of microbe?A. barophileB. halophileC. mesophileD.…
A: The optimum temperature is the temperature at which an organism has maximum growth and rate of…
Q: extreme microscopic organisms that require high temperatures to survive
A: Ecosystem has several kinds of organisms which has different habitat. Some organisms are able to…
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: Microaerophilic bacteria a. are killed at atmospheric oxygen b. grow well in 20% 02 incubator c.…
A: Microaerophilic bacteria are those which can survive in oxygen but they requires environment where…
Q: Bacteria that require the presence of oxygen are called.. Select one: O A. obligate aerobes B.…
A: Prokaryotes are the primitive organisms that were the first to develop and harness life on Earth.…
Q: Which of the microbes listed below would be most optimal to use in alcohol production? O Escherichia…
A: Alcohol production Alcohol is any organic compound in which the hydroxyl functional group(-OH) is…
Q: Biofilm formation begins when microbes attach to a surface using their. A. Cell Wall B.…
A: Biofilms are microbial cells that have clustered together on a surface. It is joined together by…
Q: Some marine bacteria, such as Cytophaga species, live and grow well inside fish guts and in waters…
A: Cytophaga is responsible for the cold water disease in trout and results in skin lesions and occurs…
Q: 1. .... are organic proteins which can speed up the biochemical reaction that occurs mainly outside…
A: Water treatment is any process that improves the quality of water to make it appropriate for a…
Q: Microorganisms that require carbon dioxide for growth are called: * A)Psychrophiles B)Capnophiles…
A: Microbiology is an indispensable subject of biological sciences that concerns the study of microbes…
Q: Which of the following statements regarding pasteurization is FALSE? Question options:…
A: all of these statments are TRUE
Q: Bacterial growth a d. An iron-oxidizing bacterium growing at neutral pH needs to grow in low oxygen…
A: Microbiology is the study of microorganisms that are invisible to the naked eye. The microorganisms…
Q: Most living organisms cannot survive at temperature above 450c.How are some microbes able to live in…
A: Micro-organism are tiny organisms that cannot be seen by the naked eye, but are visible under…
Q: ell me three things that you know about controlling microbial growth - think about how you handle…
A: Microbiologists utilized laboratory cultures to investigate bacteria and viruses. Many elements of…
Q: Helicobacter pylori, a bacterium that causes stomach ulcers, can grow in medium with a pH above 5.…
A: Helicobacter pylori is the first formally recognized bacterial carcinogen and is one of the most…
Q: Most human bacterial pathogens are O thermophiles and alkalinophiles O psychrophiles and acidophiles…
A: Mesophiles are known to be adapted to moderate temperature. Mesophiles means middle loving.
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- Explain the reasons why the Poon Choi is the high risk food for the elderly? It would be easily spoiled if you found the condensed water on the inner side of the cover lid of the container, and also if you put it at room temperature for more than two hours. Explain in term of the factors of microbes growth. Explain it in detailed.Spores and toxin-producing microorganism produce toxins need higher Aw than minimum Aw for microbial growth. How could food industry benefit from this fact?You are responsible for the bioremediation of soil contaminated by jet fuel. Your coworker suggests you fertilize the soil with nitrogen and phosphorus to promote the growth of naturally occurring hydrocarbon-degrading microbes. However, you just read about a new mixture of microbes sold in a slurry with nutrients and a surfactant. What data do you need to collect to decide which approach would be best? How will you obtain these data?
- Which of the following statements regarding pasteurization is FALSE? Question options: pasteurization now uses higher heat for shorter times than when it was initially developed thermophiles are more resistant to pasteurization than are mesophiles all of these statments are TRUE endospores typically survive pasteurization pasteurization ws developed by Louis Pasteur pasteurization was initially developed to avoid wine spoilageWhich of the following groups of microbes is most likely to be associated with humans? A psychrophiles. B thermophiles C hyperthermophiles D mesophiles.According to the Liebig's Law of Minimum, which condition of certain growth factor limits growth of microorganisms? * A. factor in abundance B. factor in optimal C. factor in minimum D. factor in maximum 2. Growth is best when microbes are incubated at ______ level within its tolerance range. * A. minimum B. maximum C. optimum D. magnanimous 3. At what phase of microbial growth when microbial growth and reproduction is fastest? * A. death phase B. log phase C. lag phase D. stationary phase 4. Most human pathogens are ______ with regard to temperature range of tolerance for optimum growth. * A. thermophiles B. mesophiles C. psychrophiles D. xerophiles 5. Which adaptations are developed by thermophiles to withstand extremely high temperature? Check all that apply. * ( ) high proportion of unsaturated fatty acids in the cell membrane ( ) high cytosine-guanine nitrogenous bases ( ) more saturated fatty acids in cytoplasmic membrane ( ) heat-stable enzymes
- A Food Microbiologist would like to determine all the possible effects of temperature and pH on microbial growth rate (Kg). How will s/he express her/his hypothesis in an equation? Illustrate the effect of temperatures 4, 15, and 25 °C on microbial spoilage of food. Assume that spoilage takes place when APC > 5.0 log CFU/g.Which of the following coud describe a microbe that causes a lemon left untouched in your refrigerator to spoil? Thermophile Obligate anaerobe none of these alkaliphile mesophile. What are the two major sources needed for microbial growth? (10) (i) …………………………… sources such as glucose, xylose, methanol, or lipids (ii) …………………………… sources such as urea, ammonium sulphate, ammonium nitrate and sodium nitrate.;
- What statement correctly explains why moist-heat is more effective than dry-heat for sterilization purposes? The microbe's molecules are resistant to alteration in the absence of water. Dry heat will always be a lower temperature than moist heat. Dry heat dehydrates the microbes, and dehydration is a method of preserving microbes. Water is a good conductor of heat.Explain the reasons why the Chinese Turnip cake would be easily spoiled if you found the condensed water on the inner side of the cover lid of the container, even though you put the cake in the refrigerator. Explain in term of the factors of microbes growth. Explain it detailedDNP is a chemical that inserts proton channels in bacterial plasma membranes. Addition of DNP to obligate aerobes results in _____. Group of answer choices A. growth as a facultative anaerobe B. death of all microbes in the culture C. no effect on microbes that do not use an ETS for anaerobic metabolism D. growth only in anaerobic conditions E. growth only in aerobic conditions