Microaerophiles - Study guides, Class notes & Summaries

Which of the following forms of oxygen is detoxified by the enzyme catalase? A) singlet oxygen B) hydroxyl radical C) hydrogen peroxide D) superoxide E) Oprah's oxygen network C) hydrogen peroxide A microbiologist inoculates a growth medium at Time 0 with 400 bacterial cells per mL. If the generation time of the species is 30 minutes, and there is no lag phase, what is the shortest incubation time before the culture reaches a population of more than 6000 cells per mL? A) 1 hour B...

Microbiology Chapter 6 Exam Questions with 100% Correct Answers | Verified | Updated Microbes have very narrow optimum temperature ranges. Which of the following classifications of microbes are most likely to cause human disease, based on temperature requirements? hyperthermophiles thermophiles mesophiles psychrophiles - answerMesophiles - The temperature range of mesophiles overlaps that of normal human body temperature, allowing the greatest growth. Which of the following statements ...

Where would you be most likely to find a population of obligate aerobes? Select one: a. in your intestines b. on your skin c. adjacent to deep-sea vents d. under Antarctic glaciers The correct answer is: on your skin Bacteria that do not use oxygen but are not killed by it are referred to as Select one: a. aerotolerant anaerobes b. microaerophiles c. facultative anaerobes d. facultative aerobes The correct answer is: aerotolerant anaerobes Consider the following set of data for mol...

OpenStax Microbiology Test Bank Chapter 4: Prokaryotic Diversity * = Correct answer Multiple Choice 1. Which is the best example of a population? A. all the microbes living in a particular area B. all the microbes of a particular domain living in a particular area C. all the microbes of a single species living in a particular area* D. all the microbes living within the same host 2. Microbial ecology is defined as the study of which of the following? A. competitive interactions betw...

MICR221 EXAM QUESTIONS WITH REVISED ANSWERS Commensal/Mutualistic bacteria of the GI tract - Answer-Lactobacillus, Bacteriodes, Bifidobacterium, Clostridium, Escherichia, Enterococcus Anaerobes in large intestine - Answer-Bacteriodes, Bifidobacterium, and Clostridium Bacteria adapted to stomach's low pH - Answer-Helicobacter Urease - Answer-Enzyme used for acid tolerance by Helicobacter Aerobes - Answer-Require molecular oxygen and final electron acceptor is oxygen. Anaerobes -...

Microbiology&infection TCDHA midterm Major source of disease agents - correct answer mouth How do we control the spread of pathogens in the office? - correct answer standard precautions Asepsis - correct answer The absence of infection or infectious materials or agents Cross-Contamination - correct answer A process that allows transfer of microorganisms between persons and environmental surfaces Universal Precautions - correct answer consider all clients as being infected with blood...

Binary Fission Cell division in bacteria in which one cell divides into two cells Why do bacterial cells not undergo mitosis and meiosis? 1) Prokaryotic cells do not possess the machinery to produce spindle fibers and therefore cannot move chromosomes around in the cell 2) Replication of DNA in a prokaryote does not occur in one phase, but instead occurs continuously 3) Most bacteria have only one circular chromosome that is attached to the cell membrane Bacteria undergo four different phases ...

MIC 205 Exam 3 Questions with All Correct Answers Psychrophiles - Answer-cold-loving microbes Mesophiles - Answer-those growing best between 20 degrees and 40 degrees celcius; the human pathogens are in this group Thermophiles - Answer-heat loving microbes minimum growth temperature - Answer-the lowest temperature at which the species will grow optimum growth temperature - Answer-the temperature at which the species grows best maximum growth temperature - Answer-the highest temperatur...

Microbiology&infection TCDHA midtermMajor source of disease agents - correct answer mouth How do we control the spread of pathogens in the office? - correct answer standard precautions Asepsis - correct answer The absence of infection or infectious materials or agents Cross-Contamination - correct answer A process that allows transfer of microorganisms between persons and environmental surfaces Universal Precautions - correct answer consider all clients as being infected with blood b...

Major source of disease agents - ANSWERmouth How do we control the spread of pathogens in the office? - ANSWERstandard precautions Asepsis - ANSWERThe absence of infection or infectious materials or agents Cross-Contamination - ANSWERA process that allows transfer of microorganisms between persons and environmental surfaces Universal Precautions - ANSWERconsider all clients as being infected with blood borne pathogens and therefore applying infection control procedures to the care of...