Which of the following takes the LONGEST to kill a live culture of vegetative bacterial cells?   a) 170°C in a dry oven b) 121°C in a steaming chamber c) 100°C in a water bath d) Direct exposure to gas flame

Q: Which of the types of sputum would you most likely suspect to see in a ptient with lung cancer? A)…

A: Lung cancer is characterized by the development of cancerous lesion in lung tissue. There are…

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: There are two cultures of yeast cells in the pictures, one has been incubated for 6 hours and one…

A: Let's say, the yeast cell culture which was incubated for 6  hours as  = sample A the yeast cell…

Q: There are fewer antifungal, anti protozoal, and antihelminth drugs compared to antibacterial drugs…

A: The antifungal drug is a drug that is used to kill the fungus. The antiprotozoal drug is a drug that…

Q: Most human bacterial pathogens are labeled as __ according to their temperature requirement: a)…

A: Microorganisms known as mesophiles thrive in habitats with moderate temperatures, often between 20°C…

Q: If the concentration of E. coli in a broth is between 104 and 106 cells per mL, the best way…

A: E.coli are the type of bacteria that is known to cause many illness in humans. E.coli is cultured in…

Q: What is the length of the infectious period given β =  0.002 S = 500 y = 0.2, R0= 5, and threshold…

A: R0 can be defined as the basic reproductive number of a contagious disease. It is represented by the…

Q: You perform a Gram staining technique on two bacterial species and observe that one is stained…

A: Gram staining is a technique used to differentiate between two groups of bacteria namely…

Q: Which of the following is false?a) A high-level disinfectant cannot be used as a sterilant.b)…

A: According to the risk for transmitting microbial infections, the medical instruments are classified…

Q: In the exponential phase of microbial growth, Log cell numbers Time 1 1 1 1 1 1 I 1 1 a) net cell…

A: Microbial growth curveThe microbial growth curve shows the pattern of microbial growth.There are…

Q: Endospores are     a) resistant to extreme temperatures     b) produced by some prokaryotes…

A: Some bacteria of phylum Firmicutes produce a non-reproductive, tough, and a dormant structure called…

Q: You inoculated two tubes of liquid cuture media with 100 bacterial cells and incubated one tube at…

A: "Microbiology" is the study of microorganisms and associated topics. Microbiology has gone a long…

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: Substances that are naturally produced by certain microorganisms that can either inhibit or destroy…

A: Microorganisms can be found almost anywhere in nature and have evolved mechanisms to grow and…

Q: Microbial pathogenicity relates to A) O how a microbe overcomes host defenses B) O how a microbe…

A: Introduction: Microbe refers to single-celled organisms. They are minute in size and cannot be…

Q: Which of the following genera is used in bread, wine, and beer production?a) Lactobacillus…

A: ALCOHOL PRODUCTION:- Microbial production of one of the organic feedstock from plant substances such…

Q: The property of endospores that led to confusion in the experimentson spontaneous generation is…

A: John Needham (1713-1781) supported the theory of spontaneous generation. Louis Pasteur disproved the…

Q: Endotoxins are A) O Associated with lipid A of the LPS layer. B) O Secreted from the cell. C) O Part…

A: Endotoxins are substances, especially toxins, which are resistant to heat and are found in a wide…

Q: Which of these statements concerning foodborne botulism is false?a) It is not a central nervous…

A: Botox (Clostridium botulinum toxin) is a neurotoxin isolated from the clostridium botulinum bacteria…

Q: The autoclave uses a combination of ___ to accomplish its function: a) temperature and pressure b)…

A: a) temperature and pressureExplanation:An autoclave is a widely used device in various fields,…

Q: You inoculated a culture with an initial cell count of 6.5x10^3 cells. The generation time for this…

A: Bacteria are prokaryotic organism and divides by binary fission that is responsible for doubling the…

Q: Which one of the following categories for antibacterial agents is most likely to have toxic side…

A: Antibacterial agents Antibacterial agents are the agents that fight against pathogenic bacteria.…

Q: Which of the following is a consideration in treating bacterial infections  A) Bacteriostatic b)…

A: Drugs used to treat these infections are called antimicrobials. The most commonly known…

Q: Which of the following diseases is least likely to be transmitted by water? a) Hepatitis A b)…

A: Pathogenic microorganisms transmitted through contaminated water produce water-borne illnesses.

Q: If you read that coliforms had been found in a lake, the report could have been referring to which…

A: Coliforms cover a broad group of microorganisms that are present in the environment. They are…

Q: Staphylococcus aureus can be responsible for all of the following conditions excepta) impetigo.…

A: Answer is d.) scaled skin syndrome.

Q: When speaking about an antibiotic's SPECTRUM, to what are healthcare providers referring? A) The…

A: In this question asked about antibiotics effect on the infection.  Detailed solution in step 2.

Q: A scientist transfers 0.1 mL phage stock to a tube containing 9.9 mL tryptic soy broth. She then…

A: The total fold of dilution represents how much the original concentration has been reduced due to…

Q: -For each item listed below, select a sterilant that you feel is the most suitable and effective for…

A: A growth medium is intended to promote the growth of a variety of microorganisms or cells by the…

Q: 5) the serous layer prevents desiccation, but compromises: A) Water transport B) Protection from UV…

A: Plants are autotrophs. They are called so because they are not dependent on other organisms and can…

Q: Is the Peptone Iron Agar (PIA) a complex or defined medium? Explain based on its composition. Is the…

A: Depending on their composition, media can be classified as defined and undefined media. Defined…

Q: Which of the following would occur if a motile bacterium were moving towards an attractant A) O a…

A: Chemotaxis is the movement of a cell towards or away from any chemical source. Two chemotaxes exist,…

Q: Identify the single most correct choice: () a) lodine can inactivate microbial cellular proteins.…

A: There are two terms that are used in microbiology to determine the effect of antimicrobials. They…

Q: Define and sketch the following: A) bacillus B) coccus C) strepto D) staphylo What is the differance…

A: Bacteria are prokaryotic, unicellular micro-organisms in nature. They have a simpler cell structure…