Q: Lactose fermentation can be used to distinguish between which of the following? Bacteria of the…
A: Fermentation is one of the earliest food processing processes. Lacto-fermentation is a type of…
Q: List two features limiting the adaptation of nonvascularplants.
A: Non vascular plants are those plants which do not have vascular system, they lack of xylem and…
Q: a selected local fermented food or drink in Ghana giving particular attention to the fermentation…
A: Fermentation is the procedure that involves several chemical reactions and various enzymes are…
Q: Hydrogen peroxide drops on a culture is used to determine which carbohydrates a bacteria can…
A: Hydrogen peroxide is used for identifying the type of bacteria. Its helps in identifying the aerobic…
Q: What are the 2 most important reasons for using a positive control in Microbiology tests? What are…
A: A control test is used to set a reference for comparison in microbiological tests. It helps the…
Q: Describe the advantages and disadvantages of aldehyde agents in microbial control.
A: The general formula of aldehydes is R-CHO. Several low molecular weight aldehydes are antimicrobial.…
Q: In treating an oil spill, why might biostimulation be preferred over bioaugmentation?
A: Bioremediation is a technique that involves the usage of microbial metabolism in presence of…
Q: Why is it necessary to maintain aseptic conditions in microbiology?
A: Aseptic conditions means microbs free environment. Microbs means bacteria, virus and fungi. It may…
Q: Discuss the importance of some bacteria to undergo starvation during stationary phase and importance…
A: The importance of some bacteria to undergo starvation during stationary phase is that : In…
Q: What are the physical methods of microbial control
A: Control of microorganisms is fundamental to forestall the transmission of illnesses and disease,…
Q: draw and interpret a graph depicting bacterial cell death. How would such a graph differ under a…
A: Chemical or biological agent that inhibits the reproduction in bacteria is known as bacteriostatic…
Q: explain the possible factors affecting the growth of e.coli that results to no growth after doubling…
A: Bacterial growth are equated to cell number- one bacteria divides into two, then these two produce…
Q: Why is it important to become familiar with the microbiology laboratory's apparatus and equipment?
A: You should always know your lab equipment well before you do any type of experiment because without…
Q: Explain the mechanism of action of several of the physical and chemical agents employed to control…
A: Microbes such as bacteria, viruses, worms may act as nuisance causing various diseases in plants,…
Q: In the Messelsohn-Stahl experiment, there should be ______ band(s) in the centrifugation tube after…
A: Meselson and Stahl's experiment is an experiment that supported the semi-conservative replication…
Q: Give an example of an industrial/clinical setting where quantifying viable bacteria would be useful.…
A: Quantifying viable bacteria is useful :-
Q: INFO GRAPHICS about KREBS CYCLE
A: acetyl CoA combines with a 4-carbon acceptor molecule, oxaloacetate, to form a six-carbon molecule…
Q: The aerotolerance test is used to determine the oxygen requirements for bacterial growth.
A: FALSE.
Q: What is the significance of adding salt in the fish fermentation process? Explain eleborately and…
A: Fermentation is a technique for combating microbiological spoilage of fish. It accomplishes this by…
Q: Define Bacteriocin, give a list of the different types of bacteriocins and the effects they have on…
A: Answer: Bacteria : These are the microscopic , single celled microorganisms that exists in…
Q: If a broth tube is inoculated with 100 cells which immediately enter exponential growth, how many…
A: The generation time, also known as the doubling time of a bacterial population, is the rate of…
Q: Which of the following molecules have been used as a biomarker in studies in microbial ecology? a…
A: All these molecules have been used as biomarkers in microbial ecology. Sterols, d- alanine and…
Q: MacConkey agar Non-lactose fermenting Lactose fermenting colonies (lactose*) colonies (lactose-)…
A: Macconey agar is used to isolate on the basis of their ability to ferment lactose It is composed of…
Q: In a short paragraph explain which is more effective at killing microbes: autoclaving or freezing.
A: The mechanism of killing microbes is known as sterilization. The sterilization is an important…
Q: Your unknown sample will contain two different bacterial species. The same biochemical tests…
A: Different types of bacterial species present in sample require different biochemical tests.
Q: What are secondary metabolites? In terms of microbial technology, how do we get bacteria to produce…
A: The study of microbes using various techniques like culturing, staining, genetic engineering, etc is…
Q: smad pathway
A: SMADs acts as the substrates of TβRI kinase and involves in the intracellular TGF-β signalling.…
Q: What is commercially produced by biotechnological procedures?
A: Biotechnology is the technology used to manipulate deoxyribonucleic acid (DNA). The procedures are…
Q: placing bacteria at ultracold temperatures is as effective at killing microbes as the use of dry…
A: true
Q: Escherichia coli but not Pyrolobus fumarii will grow at 40°C, while P. fumarii but not E. coli will…
A: Microbes are classified based on the adapted environment. There are mesophiles, thermophiles and…
Q: What is Bacterial Injury in Microbiology?
A: Bacteria produced in pure culture under ideal circumstances are examined in the lab for their…
Q: What is biocompatibility? Briefly describe how the success of a biomaterial is evaluated.
A: Biomaterials are used for therapeutic purposes to treat or replace injured or damaged body tissues,…
Q: There are several applications of microorganisms in industries. One of them is in medical and…
A: A microorganism is an organism that can only be observed under a microscope. Bacteria, protozoa,…
Q: List and define the four phases of growth in a bacterial growth curve
A: the four phases of growth in a bacterial growth curve: There are four distinct phases of microbial…
Q: Provide the conditions (e.g., intrinsic properties, storage conditions, etc.) that will make the…
A: Conditions essential for recovery of microorganisms from the sterile foods.
Q: What is the essence of microbiology in nursing?
A: Microbiology in nursing
Q: What is the importance of employing aseptic techniques? Give an example of a situation in the…
A: There are few important points: We all know that microorganism and pathogen that is disease causing…
Q: When plotting microbial death curves, how might they look different for bactericidal versus…
A: While plotting the curve for the viable bacterial cells on a graph, the bacteria before adding the…
Q: What are the different types of Microbial Control
A: Microbial control agents are the biotically-derived chemical compounds or secondary metabolites that…
Q: Does a compensatory pause always follow a PVC? Explain.
A: The most prevalent cause of abnormal heart rhythms is premature ventricular contractions (PVCs). The…
Q: Calculate the doubling time of a culture of E. coli that is started with 3x105 CFU/mL and grows to…
A: Given: No = 3x105 CFU/mL (number of bacteria at the beginning of a time interval) Nt = 4.6x108…
Q: y do some household chemicals state that they will kill 99.9% of germs. Based on your knowledge of…
A: Antimicrobial agents are chemicals that are utilizing to sterilize or clean surfaces and find…
Q: use these OD numbers to plot growth curve for E. coli K12– and estimate generation time for this…
A: The growth curve for E.coli K12 is plotted as follows:
Q: Give two reasons for why heat fixing is used? Adherence of bacterial cells to the slide…
A: Haet fixing is the procedure in gram staining of the bacteria. This has to be done so that the…
Q: Identify Four (4) possibilities in cell culture practices that able affect the quality and yield of…
A: Cell culture It is a method of growing the cells in artificial condition i.e. cells are grown…
Q: How is UV radiation a good type of control mechanism against microbial growth? Explain what happens…
A: UV-C is most commonly used to kill microbes. However UV of different wavelength can show different…
Q: Write down a comparison of the sizes of the untreated Allium cepa cell and the colchicine-treated…
A: Onion, or Allium cepa, is a culinary and medicinal spice from the Liliaceae family that is used all…
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A: Need to find the difference in use of using peppermint and cinnamon oil in medicine to treated…
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- What is the importance of employing aseptic techniques? Give an example of a situation in the laboratory that might happen when this method is not practiced.What is there to understand about Aseptic Transfer for Aseptic Techniquehttps://courses.lumenlearning.com/microbiology/chapter/controlling-microbial-growth/ Read this Article about Controlling Microbial Growth and answer the following questions: Which is most effective at removing microbes from a product: sanitization, degerming, or sterilization? Explain. What are two possible reasons for choosing a bacteriostatic treatment over a bactericidal one? Name at least two factors that can compromise the effectiveness of a disinfecting agent.
- explain:The process by which alteration in the genetic makeup of live type IIR bacteria was performed by heat killed type IIIS bacteria.N. benthamiana will be infiltrated with a solution containing OD600=0.3 of each experimental Agro containing construct and OD600=0.1 of p19. Calculate the volume of cultures (V construct; V p19) needed according to the formulas: V construct = V final × 0.3/OD600; V p19 = V final × 0.1/OD600. One mL of infiltrate is often enough to complete a small experiment. How to plan your final volume accordingly?Streptococcus pneumoniae is a Gram-positive bacterium that colonizes the mucosal surface of the upper respiratory tract in humans. The presence of this bacterium in the nose and throat is widespread in the population, and in most people, colonization with Strep. pneumoniae is asymptomatic. The figure attached shows a comparison of in vitro growth curves of the wild-type strain of Strep. pneumoniae, as well as a Strep. pneumoniae mutant strain with a defect in one bacterial gene. The graph on the right shows the growth curve following addition of lysozyme during the logarithmic phase of bacterial growth. Which statement could account for the data in these graphs? Strain B is wild-type Strep. pneumoniae, and strain A is a mutant that cannot modify its peptidoglycan to be lysozyme-resistant. Strain B is wild-type Strep. pneumoniae, and strain A is a mutant that that expresses increased levels of LPS. Strain A is wild-type Strep. pneumoniae, and strain B is a mutant that cannot modify its…
- Consider the photos here which demonstrate antibiotic sensitivities of Staphylococcus aureus strains as determined by the Kirby-Bauer method. Abbreviations are as follows: C = chloramphenicol; CC = clindamycin; CZ = cefazolin; E = erythromycin; NOR = norfloxacin; OX = oxacillin; P = penicillin; RA = rifampin; SAM = sulbactam-ampicillin; SXT = sulfatrimethoprim; TE = tetracycline; VA = vancomycin. Imagine that only two cellular changes occurred in the original strain (the first image, on the top) that resulted in the resistance pattern of the strain in the second image (on the bottom). Which combination of mechanisms could explainthese results?Choose one or more: A.expression of efflux pumps B.overproduction of PABA C.production of β-lactamase D.altered penicillin-binding protein E.modification of either 50S or 30S ribosomal subunits F.altered DNA gyraseWhat is the main group of microorganisms producing the most antibiotics? Describe the biochemical characteristics of this microorganism and provide TWO (2) examples of antibiotics produced by these microbes.https://courses.lumenlearning.com/microbiology/chapter/controlling-microbial-growth/ Read this Article about Controlling Microbial Growth and answer the following questions: What are some characteristics of microbes and infectious agents that would require handling in a BSL-3 laboratory? What is the purpose of degerming? Does it completely eliminate microbes? What are some factors that alter the effectiveness of a disinfectant?