Q: What component of the gram-negative cell has endotoxinproperties?
A: Endotoxins are part of the outer membrane of the cell wall of Gram-negative bacteria. Endotoxin is…
Q: Helicobacter pylori survives in the acidic environment of the human stomach, but this organism is…
A: Helicobacter pylori is a neutrophilic bacteria i.e. it loves the neutral pH and is able to survive…
Q: What are the purposes of the antimicrobial agents present in the selectivemedia used for the…
A: the purposes of the antimicrobial agents present in the selective media used for the isolation of…
Q: Does a positive presumptive test mean that the water is absolutely unsafe to drink? Explain. 2.…
A: Presumptive tests are cheaper than the confirmatory test. These tests are conducted to ensure the…
Q: Name three genera of noncoliform enteric bacteria that are opportunisticpathogens.
A: Enterobacteriaceae are a group of Gram-negative bacteria. Many of these bacteria are natives in the…
Q: What did Enterococcus avoid characteristics and descriptions of laboratory procedures and method…
A: Enterococcus is a type of bacteria that is commonly found in the intestines of humans and animals.…
Q: Why is an organism such as Staphylococcus adapted to growth on the human skin whereas the…
A: An organism is able to grow well in an environment which it find suitable in terms of pH and…
Q: Why is staining of stool samples very important in identifying parasites?
A: In this question it is to describe that why is staining of stool samples very important in…
Q: Did enterococcus avoid characteristics and descriptions of laboratory procedures and method…
A: Enterococcus is a species of bacteria that can be found in both people and animals' intestines. It…
Q: What is the drug of choice for patient who had S. Aureus culture? Why?
A: Staphylococcus aureus is responsible for a wide range of symptoms and illnesses. Penicillin is the…
Q: How does helicobacter pylori survive the acidic pH of the stomach? thank you
A: According to the question, we have to explain how helicobacter pylori survive the acidic PH of the…
Q: What characteristics of Pseudomonas species allow them to spoil such a wide variety of foods?
A: Pseudomonas belongs to a group of gram-negative bacteria. They are a very common cause of infection…
Q: Antibiotics are derived from all the following except: a) Penicillium b) Bacillus c) Staphylococcus…
A: Antibiotics are the chemicals that are produced by one bacteria to kill other bacteria. The first…
Q: Which of the following common causes of healthcareassociated infections is an environmental organism…
A: The infections which people get when they are receiving health care for another condition are called…
Q: Why would a complex culture medium for Leuconostocmesenteroides be easier to prepare than a…
A: Culture medium: It is also known as a growth medium where specific microorganisms and plants will…
Q: What is the principle of the coagulase test result? How does coagulase contribute to the virulence…
A: Coagulase test is used to detect whether the microbes present in media produce coagulase or not.
Q: What is a generally minimum pH for growth and toxin production by Clostridium botulinum and other…
A: Clostridium botulinum is a Gram-positive, rod-shaped, anaerobic, spore-forming, motile bacteria that…
Q: Salmonella typhi is a facultative anaerobe. Explain comprehensively.
A: The group Enterobacteriaceae includes the genus Salmonella, which consists of microorganisms linked…
Q: Haemophilus infl uenzae is................ and requires special................. for growth. a.…
A: Haemophilus infl uenzae is................ and requires special................. for growth.
Q: Describe the evidence linking Helicobacter pylori togastric ulcers. How can these ulcers be cured?
A: Helicobacter pylori is a bacterium that is responsible for causing gastric ulcers. Bacteria are…
Q: How could species of Staphylococcus be differentiated fromStreptococcus?
A: Staphylococci and streptococci are among human bacterial pathogens of greatest importance. Currently…
Q: What are the essential environmental requirements for cultivatingCampylobacter?
A: Campylobacter is a genus that includes gram-negative bacteria. The shape of these bacteria is…
Q: Why do gram-positive bacteria not produce endotoxins?
A: ExotoxinsThey are proteineous substances that are produced within the bacterium as a byproduct of…
Q: Helicobacter pylori is able to use urease to neutralize the stomach environment because the enzyme…
A: These are microbial urease found in stomach. As ureases they catalyze urea to produce ammonia and…
Q: How does Roseobacter differ from Prochlorococcus?
A: An organisms that takeaway the photon express to obtain energy is called phototrophs. The ocean…
Q: Identify the oxidase-negative, gram negative bacillus isolated from the blood cultures of a…
A: Gram-negative bacteria are those that do not retain the crystal violet stain after gram staining.…
Q: What two characteristics separate Salmonella from Shigella? What media can be used for this…
A: Enteric pathogens are microbes that affect the intestine and cause infections. These include…
Q: How could one differentiate the genera Vibrio, Campylobacter,and Helicobacter?
A: Bacteria are the sole members of the kingdom Monera. They are the most abundant micro-organisms…
Q: Write a paragraph describing the microscopic morphology of: a) Clostridium perfringes b)…
A: Morphology is the study of the external structural attributes of an organism. The genus Clostridium…
Q: Can Clostridium botulinum survive in water
A: Clostridium botulinum is a rod shaped anaerobic bacteria that survive and grow in the absence of…
Q: List some of the chemical substances that have been identified in bacterial capsules. What…
A: Microbiology is the branch of science that deals with the study of microorganisms that are too small…
Q: Describe result for gram reaction of staphylococcus capitis
A: Staphylococcus capitis is a CoNS (Coagulase-negative species) of the genus, Staphylococcus. It has…
Q: what is the media of culturing salmonella typhi?
A: Salmonella typhi Salmonella typhi is a parasitic bacteria that infect blood and intestine of human…
Q: Is Bacillus cereus negative or positive for growing in high salt concentrations?
A: Bacillus cereus is a gram-positive, endospore forming, non-capsulated bacillus, motile with…
Q: Describe the colony morphology if Neisseria Gonorrhoeae if it is grown in agar plates in the…
A: Neisseria Gonorrhoeae, also known as gonococci, is a gram-negative diplococcus. In 1879 this…
Q: What are the common pathogens isolated from stool samples? What is the difference between a coliform…
A: A pathogen is living thing that causes infection. Infections and microorganisms can be microbes,…
Q: How might Campylobacter contamination of food productionanimals be controlled?
A: Campylobacter infection is caused by Campylobacter bacteria. It is the most common bacterial cause…
Q: List three reasons Bacillus spp. are of practical importance
A: Bacillus subtilis is a type of aerobic and Gram-positive bacteria which has been widely used in many…
Q: On blood agar whattype of hemolysis. wouldmicrococcuscoseus.have? aBor of it a
A: Micrococcus roseus shows Gamma hemolysis on bloodcagar
Q: what are the selective media for Vibrio cholerae
A: A type of media which allows the growth of only specific microbes or the microbe of interest and…
Q: What selective agents are added to media to preferentially grow enterobacteria for study? What type…
A: Gram-staining is a procedure of staining than can be used to differentiate between bacterial species…
Q: Why is Plasmodium species isolated usually in blood?
A: Plasmodium species are blood parasites belong to phylum protista that causes malaria. Vector for…
Q: Characterize and give a brief description of the following bacteria: Salmonella enteritis…
A: A bacterium, Salmonella enteritis's, can be inside perfectly normal-appearing eggs, and if the eggs…
Q: How Bacillus thurengiensis is used commercially?
A: Bacillus thurengiensis is a soil bacterium. It produces crystal protein(cry protein).…
Q: Describe the appearance of coliforms on Levine EMB agar.
A: Coliform bacteria are found in a diverse range of places like waste products of animals, water…
Q: Describe four enzymes produced by Staphylococcus, and explain how each contributes to the…
A: Enzymes are biological catalysts that help in catalyzing or speeding up biological reactions by…
Q: Why does Propionigenium modestum require sodium for growth?
A: Propionigenium modestum grows from the fermentation of succinate to propionate and CO2.
Why might members of Campylobacter not be isolated from a stool
specimen in a diagnostic laboratory?
Step by step
Solved in 3 steps
- Why does Balantidium coli have the greatest clinical impact?Why is Plasmodium species isolated usually in blood? What is the purpose of the thick and thin blood smear? What are the characteristics of a good quality malarial smear?Write a paragraph describing the colonies of: A) Clostridium perfringes B) Clostridium tetani C) Clostridium botulinum
- Why is Plasmodium species isolated usually in blood?Why does Balantidium coli have the greatest clinical impact? What and how will you eradicate this parasitic infection? describe your methods for elimination.What are the common pathogens isolated from stool samples? What is the difference between a coliform bacterium and a noncoliform enteric bacterium? What diagnostic test differentiates Proteus and Providencia species from other Enterobacteriaceae? How would you differentiate between serotypes of E. coli? Are the gram-negative enteric bacilli fastidious organisms? Would they survive well outside of the body? If so, what significance would this have in their transmission? Why is serotyping particularly important in Salmonella infections and typhoid fever?
- Why does Helicobacter pylori cause ulceractions in the lining of the Stomach? 1)The microbes secrete a toxin that prevents the host from detecting invasion of the microbe and thus allows it to thrive in the stomach and damage the host cells. 2)After invasion of the microbe in the cells lining the stomach, they are no longer able to produce mucous to protect the host cells from acid erosion 3)The microbe produces an enzyme that causes the cell to produce potent digestive enzymes that erode the stomach lining. 4)Once the microbe has entered the stomach, it releases digestive enzymes that degrade the mucous secreting cells.List the following to determine the unknown bacteria: Streptococcus mutans 1) Morphology & Characteristics 2) the different biological tests to be doneBriefly explain how urease helps Helicobacter pylori to evade the protective nature of the body.
- Which of the following method is commonly used for the diagnosis of the acute amoebic dysentery?a) Hemagglutination inhibition testb) Compleman binding assayc) Proctoscoped) Culturing the stool samplee) Direct smear from stool samplesMatch the organism in column A to the symptom/manifestation in column B that fits it most appropriately. Use cach description only once. COLUMN A i) Plasmodium falciparum COLUMN B a) Toxic shock syndrome i) Crуpiococсus neоformans ii) Clostridium perfringens iv) Chlamydophila psyttaci v) Clastridioides dificille b) Dental caries c) Newborn meningitis d) Pscudomembranous colitis e) Dysentery vi) Staphylococcus aureus f) Fungal meningitis vii) Entamoeaba histolytica g) Surgical wound infections viii) Streptococcus mutans h) Gas gangrene ix) Streptococcus agalactiae i) Pneumonia acquired from birds x) Pseudomonas aeruginosa j) MalariaWhat are the essential environmental requirements for cultivatingCampylobacter?