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: Which antimicrobics would be suitable for the control of the following organisms?S. aureus:E.…
A: Bacteria are single-celled and very small organisms. They found in water, human gut, soil, air,…
Q: Which has a greater impact on the survival of an organism, temperatures above its maximum…
A: The microbes grow in a wide temperature range. The microbial growths are found to be higher at their…
Q: Using pasteurization techniques as a model, compare the TDTs and explain the relationships between…
A: Microbiology is the branch of biology that deals with study of organisms that are too small to be…
Q: If a bacteria was found to survive very well in a pond of strong acid, but died quickly when exposed…
A: Certain bacteria are able to survive high salinity, some are able to survive at low pH while some of…
Q: lists the major contents of the bacterium Escherichia coli.
A: The member belongs to the large group of unicellular microorganisms that have cell walls but lack…
Q: Determine the optimal pH (or range of pH) for: Escherichia coli and Staphylococcus aureus
A: Several factors like temperature, pH ,food etc determine the growth and survival of an organism.
Q: Predict the environmental host conditions that favor the association of acidophilic, anaerobic,…
A: Bacteria have a minimum, average, and maximum growth temperature and, based on their optimal growth…
Q: Explain how an enzyme can be useful in treating a bacterialinfection, such as that which occurs with…
A: Enzymes are also known as bio-catalysts because it acts as a catalyst in living beings. Hence, an…
Q: Describe the basic effects of temperature on microbes.
A: The microorganism or microbes are characterized by their existence in the form of a single-cell or…
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: Which of the following bacteria can survive in in temperatures ranging from 39°F (4°C)---to 99°F…
A: Bacteria are single-celled microorganisms that can be found in every environment on Earth. They are…
Q: Which of the following is capable of oxidizing elemental sulfur to sulfates? Bacillus GSB and PSB…
A: Plants and animals require a continuous supply of sulphur and its compounds in order to synthesise…
Q: Use the following chart (dichotomous key) to identify the enteric bacterium A, B and C: (5 marks)…
A: To identify: To identify the enteric bacterium A,B and C using the given chart.
Q: Show a diagram of beta-hemolysis and alpha-hemolysis by different bacteria on blood agar and explain…
A: Hemolysis is the process by which red blood cells in the blood are broken down by chemicals or by…
Q: Pseudomonas aeruginosa is capable of aerobic respiration and anaerobic respiration but not…
A: SIM test stands for Sulfur, Indole and Motility test. Hence, this test allows the detection of…
Q: Describe how each of the following would appear when grown on EMB agar: a. Escherichia coli b.…
A: EMB stands for Eosin Methylene Blue. This media is used as a seletive stain for the gram negative…
Q: turned red after Zn Stayed colorless after Zn turned red after NI and NII Which bacteria possess…
A: Nitrate test is done in the organism to know where they can convert nitrate to nitrite or not. The…
Q: Why heat can kill microorganisms?
A: * Microorganisms are the organism that can seen only through using microscope.They consists of…
Q: A patient with stomach ulcers was treated with antibacterial antibiotics for H. pylori infection and…
A: Introduction: Ulcers: Ulcers are explained as the sores on the lining of the stomach or small…
Q: Describe the metabolism for each of the following Bacteriaand state whether the organism is an…
A: Bacteria are single-celled prokaryotes ubiquitous in nature. As such, they can be found in different…
Q: Escherichia coli but not Pyrolobus fumarii will grow at 40°C,while P. fumarii but not E. coli will…
A: Escherichia coli is a Gram-negative, rod-shaped, facultative anaerobic bacteria. It usually inhabits…
Q: Match the expected result (purple, red, or colorless) to the following descriptions of Gram-stained…
A: Gram-staining is a procedure of staining than can be used to differentiate between bacterial…
Q: Anaerobic bacteria produces which of the following inhibitory toxic product?
A: Anaerobic bacteria are those bacteria which do not require oxygen for their growth, cell division or…
Q: Using a textbook or a reputable internet source, find two Gram-positive pathogenic bacteria and two…
A: It is required to find gram-positive and two-gram negative pathogenic bacteria that are facultative…
Q: What are the cardinal temperatures for Escherichia coli? Towhat temperature class does it belong?
A: Escherichia coli is a microscopic organism, specifically a gram negative bacteria. It is a…
Q: hich of the following microorganisms has not been linked to UTI’s? E. coli Pseudomonas…
A: A urinary tract infection (UTI) is a bacterial infection that affects the urinary tract. This sort…
Q: If the temperature of the incubator were to be increased from 35 to 45°C, how would this affect the…
A: The growth of bacteria is influenced by many physical factors. Temperature is one of the significant…
Q: You have three nutrient broths: Isotonic (0.9% NaCl), 2% NaCl or 10% NaCl. Which would be preferred…
A: Bacteria are single-celled prokaryotic organisms that replicate through simple cell division. The…
Q: Microorganisms are involved in each of the following processes EXCEPT infection fog production…
A: Ans: Fog production
Q: Use the dichotomous key in Table 2 to identify a gram-negative rod that ferments lactose and uses…
A: Bacteria are ubiquitous, mainly free-living organisms with only one biological cell. They are indeed…
Q: Which of the following is true about heat fixation
A: Answer: HEAT FIXATION = It is the procedure for fixing or killing the bacterial smear on the slide…
Q: Write a brief description of morphology of the salmonella typhi cell, the genus and species of…
A: Typhoid fever is more common in non-industrial countries. Travelers to Asia, Africa, Eastern Europe…
Q: Which of the following test will be useful for initial distinction between Salmonella and…
A: Microbiology is the branch of biology that studies microorganisms. In microbiology, different…
Q: State something about Bt toxin.
A: Bt is expanded as Bacillus thuringiensis. It is a soil-dwelling bacteria which naturally produces…
Q: Lactobacillus acidophilus ferments glycogen produced by the vaginal epithelium forming ________…
A: The question asks to fill the following blank:Lactobacillus acidophilus ferments the glycogen that…
Q: Suppose when you are performing a Gram stain procedure, you hav reversed the order of crystal violet…
A: A) E.coli it is a gram negative bacteria. Strain red or pink due to retaining the color staining…
Q: Pseudomonas aeruginosa is capable of aerobic respiration and anaerobic respiration but not…
A: Sulfide indole motility test: Sulfur Reduction Indole Production Motility
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: Briefly describe the E. coli cold shock response.
A: Shock proteins comprise the primary line of protection for cells presented with unpleasant…
Q: Identify, by metabolic type, microorganisms responsible for dissimilatory nitrate, sulfate, and iron…
A: Microbiology is the branch of biology that deals with study of organisms that are too small to be…
Q: Describe the proteins produced when cells ofEscherichia coli experience a heat shock. Of what…
A: Under a wide range of stress conditions like physicochemical factors influence the production of…
Q: To which of the following is the photosynthetic bacterium Chormatium most closely related? Explain…
A: The bacteria is the unicellular prokaryotic organism that maintains a definite shape since it…
Q: Describe the procedure for obtaining the minimuminhibitory concentration (MIC) for a chemical that…
A: The microbial susceptibility tests to the antimicrobial agents is done in the laboratory that helps…
Q: Microorganisms present on surface of skin and mucous membrane are killed by a chemical named as
A: Human skin provides the first line of non-specific defense against pathogens. The skin and mucous…
Q: You are given a mixed culture of 3 bacteria–Methicillin-resistant Staphylococcus aureus(MRSA),…
A: The pure culture consists of a single microorganism. This culture helps to easily evaluate the…
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- Determine the optimal pH (or range of pH) for: Escherichia coli and Staphylococcus aureusAnaerobic bacteria produces which of the following inhibitory toxic product? -methilane -cyanide oxides -fatty acids -sulphidesThe table below is from the lethal effects of heat for E. coli. What is the TDP for this organism? (Please include the unit.)
- Which antimicrobics would be suitable for the control of the following organisms?S. aureus:E. coli:P. vulgaris:P. aeruginosa:clostridium botulinum is a bacterium usually present in soil that may cause botulism. Briefly explain why one or few cells of a pathogenic bacterium, such as clostridium botulism, by itself typically does not secrete a toxin, despite the species as a whole being characterized as toxin producing.placing bacteria at ultracold temperatures is as effective at killing microbes as the use of dry heat in incineration. is is true/false?
- Describe the basic effects of temperature on microbes.Describe the metabolism for each of the following Bacteriaand state whether the organism is an aerobe or an anaerobe:Thiobacillus, Nitrosomonas, Methylomonas, Pseudomonas,Acetobacter, and Gallionella.Which of the following is capable of oxidizing elemental sulfur to sulfates? Bacillus GSB and PSB Thiobacillus Rhodospirillum Desulfotomaculum Rhodomicrobium Azotobacter
- If a bacteria was found to survive very well in a pond of strong acid, but died quickly when exposed to air, this bacteria may be considered....? Aerobic Anaerobic Pathogenic E. coliDescribe and explain the difference in results if Staphylococcus aureus were used instead of Escherichia coli.Discuss the importance of some bacteria to undergo starvation during stationary phase and importance of knowing the right culture media for specific microorganism.