Q: explain the toxic effects of mycotoxins on living organisms?
A: Mycotoxins are the poisonous compounds that are produced by certain fungal species. These fungi when…
Q: What roles do microorganisms play in the biogeochemical cycle?
A: Microorgansims in nature exist as the members of the heterogenous community under changing…
Q: What is the significance of thermotolerant E. coli? How did we use temperature to help select for…
A: The phrase "total coliforms" refers to a vast group of Gram-negative, rod-shaped bacteria with a…
Q: What is the effect of light on microbial growth?
A: Introduction:- The quantity of bacteria in a population, rather than the size of individual cells,…
Q: Why is ionizing radiation more effective than UV radiation forsterilization of food products?
A: Ionizing radiations are the radiations that are released by the atoms that travels in the form of…
Q: How might the enzymes of thermophiles differ from those of other organisms?
A: The study of chemical reactions that occurs within living organisms is called biochemistry. This…
Q: Do obligate anaerobes require a functional oxidase, why or why not?
A: Oxidase is type of an enzyme that is responsible for catalyzing redox reactions, especially the one…
Q: What is the key difference between reactions that result in the final product of fermentation to…
A: Fermentation is widely known metabolic process in which the sugar is converted into various products…
Q: How are the lipids and ribosomes of hyperthermophilesprotected from heat denaturation?
A: Hyperthermophiles are organisms which grow at extremely hot temperature conditions often having…
Q: Microbes are found mostly in topsoil, but some are found miles deep in bedrock. Nutritionally, how…
A: Microbes or microorganisms are single-cell organisms that can be observed by using a microscope.…
Q: Describe the basic energy strategies of microbes and the catabolic pathways they use.
A: Introduction: The microscopic living beings that can not be seen by naked eyes are considered to be…
Q: What metabolic process creates the rotten-egg smell characteristic of many anaerobic environments?
A: Hydrogen sulfide gas has the chemical formula H2S and possesses a characteristic rotten eggs smell.…
Q: How does an aerotolerant anaerobe differ from a microaerophile?
A: Microorganisms are classified into different types based on the requirement of oxygen and are…
Q: What are Thermoacidophiles ?
A: Thermoacidophiles are organisms that prefer to grow at high temperatures (80°C) and at low pH (pH…
Q: Which bacterial species produced amylase?
A: Microorganisms or microbes are microscopic organisms that exist as unicellular, multicellular, or…
Q: Why heat can kill microorganisms?
A: * Microorganisms are the organism that can seen only through using microscope.They consists of…
Q: Is H2S a substrate or a product of the sulfate-reducing bacteria?Of the chemolithotrophic sulfur…
A: Chemolithotrophs use electron benefactors oxidized in the cell, and channel electrons into…
Q: How can a life cycle of microorganism and heat resistance graph be used to determine the boiling…
A: Heat is one of the effective as well oldest physical methods that have been employed for microbial…
Q: What are the effects of temperature, and pH on microbial growth?
A: Living organisms grow and reproduce. When microbes are provided with sufficient nutrients and…
Q: What other foods are produced by microbial fermentations? What organisms are involved?
A: Microbial fermentation is a process through which the microbes decompose and utilize the…
Q: How does SgrS help Escherichia coli prevent a potentialmetabolic disaster?
A: SgrS stands for sugar transport-related sRNA. It is a 227 nucleotide small RNA and is expressed in…
Q: How do some bacteria detoxify toxic oxygen metabolites
A: Based on the requirement of oxygen for their survival, microorganisms are classified as: Obligate…
Q: When are microbes in food harmless?
A: Bacteria are the most important microorganisms to the food processor. Some bacteria are beneficial…
Q: Why only specific microbes are selected to produce the fermented products?
A: Fermentation refers to “partial oxidation” of sugars by microbes using the organic molecule to…
Q: Do facultative anaerobes require a functional oxidase, why or why not?
A: The bacteria is the unicellular prokaryotic organism that maintains a definite shape since it…
Q: Why is it possible for bacteria tosurvive on acetic acid as a sole carbon source, but not…
A: Carbon is necessary for living organisms as it forms various types of bonds. It forms important…
Q: How is insulin produced in the Stirred tank bioreactor?
A: Insulin enzyme is produced by the pancreas and it help us in maintaining blood glucose level.insulin…
Q: In what ways can CO2 inhibit microbial growth?
A: Microbial growth is the proliferation of microorganisms in conditions that support the growth of the…
Q: Why are some microorganisms capable of utilizing certain carbohydrates and some are not?
A: A microbe is a living entity that is so tiny that it cannot be seen with the naked eye. Microbiology…
Q: How is dairy put in an application in microbiology and its involved microorganism?
A: Dairy is nothing but the Cows milk which plays a significant role in mammal growth.Milk obtained…
Q: How is water decontaminated and made safe to drink?
A: Water is very important for our survival it is required in almost all the processes which we do in…
Q: batch fermentation affects the biomass production of the microorganism, and what factors influence…
A:
Q: What is the connection of the effects of Acidification and chemical preservatives on Microbial…
A: OFSP means Orange - fleshed sweet potato. It is a special type of sweet potato with high levels of…
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: What is the importance of fermentation to microbial metabolism? Please include citation.
A: Microbial metabolism refers to how a microorganism receives the energy and nutrients (such as…
Q: Why are anaerobic microbes important for making food?
A: they are the organism that does not require oxygen for their metabolic activity in anaerobic…
Q: Classify the electron holders used by microorganisms according to the rate of biodegradation. What…
A: Biodegradation refers to the disintegration of organic matter using microorganisms like fungi and…
Q: what is the difference between volatile oils and fixed oils in terms of degradation?
A: Oil is a triglyceride that is liquid at room temperature. It is a nonpolar chemical substance that…
Q: Why are most iron-oxidizing chemolithotrophsobligate aerobes, and why are the better-studied…
A: An obligate aerobe is an organism that requires the presence of oxygen for their growth. During…
Q: Describe the deference between microbial contamination and microbial fermentation in milk?
A: Fermented or cultured milk is prepared by adding microbes like bacteria or moulds to the normal milk…
Q: How does Gamma radiation control the microbial growth affect of cells?
A: Different forms of radiations are used to kill microorganisms or control their growth. Gamma rays…
Q: What are fermentations and why are they useful to many microorganisms?
A: Respiration involves biochemical oxidation of glucose to derive energy (in the form of ATP or…
Q: What are the social and economic implications of the statement "Secondary metabolites are not…
A: There are two types of metabolites produced by an organism- Primary metabolites and Secondary…
Q: Why is accelerated microbial corrosion of iron metal thought torequire a direct interaction between…
A: Iron corrosion by air is an electrochemical process. However, that in absence of air, for example in…
How does microbial
corrosion of various metals?
Microbial corrosion or biocorrosion occurs due to the activity of microbes present in the biofilm that surrounds the corroding substance. The material can be both metal or a non-metal like glass or concrete. Several different bacteria like Acidithiobacillus, Ferrobacillus ferrooxidans, Desulfotomaculum, and Desulfovibrio can cause biocorrosion.
Step by step
Solved in 2 steps
- In what ways can CO2 inhibit microbial growth?1(a)What is a psychrotroph? (b)From what natural sources would you isolate a thermophile? A psychrophile? (C)How does temperature affect the growth of a microorganism? (D)State the temperature class for Escherichia coli, Bacillus sp, Aeromonas sp, Micrococcus luteus, and suggest their optimum growth temperature. 2 (a)Why is dilution important when determining microbe number? (B)How does a decrease in dye colour intensity affect the microbe ? (C)State the possible sources of error if plate counts and colour intensity of dilutions are incorrect or Precautions taken to prevent this from happening. ( this is not a graded assignment)How are the lipids and ribosomes of hyperthermophilesprotected from heat denaturation?
- What are the social and economic implications of the statement "Secondary metabolites are not produced by microorganisms"?Why are microbial cells negatively charged? Why are clay particles negatively charged? How can microbes attach to clay particles if they are both negatively charged? How can microbes access large complex cellulose polymer molecules for intracellular metabolism?Why do microorganisms differ in their pH requirements for growth?
- how it is possible for certain microbes to survive and grow in the presence of cyanide, which would kill many other organisms?Write the complete redox reactions for the following microbial metabolisms. Give an example of a type of environment where such bacteria may thrive (will there be plentiful O2? Organics-rich sediment? mineral-bearing rock formations etc?) Oxidation of glucose (C6H12O6) by sulfate (H2SO4) reducers (redox products are CO2 and H2S). Oxidation of ferrous hydroxide (Fe(OH)2) by iron-oxidizing bacteria in oxygen (O2)-rich environment. Redox products are Fe(OH)3 and H2 Please write all redox reactions correctly and explain! Thanks!Identify the single most correct choice: () a) lodine can inactivate microbial cellular proteins. ( b) Alcohols may dissolve lipids and hence possess antimicrobial activities. c) Moist heat may result in protein denaturation and hence possess antimicrobial activities. 7 d) a and c e) b and c f) a, b and c