BIOD 171 Essential Microbiology Portage Learning Module 5 Exam Questions and Answers 2022-, Study notes of Nursing

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BIOD 171 Essential Microbiology

Portage Learning Module 5 Exam

Questions and Answers

M5: Module 5 Review

Due No due date Points 0 Questions 16 Time Limit None

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Attempt Time Score LATEST Attempt 1 17 minutes 0 out of 0

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Submitted Jun 11 at 9:16am This attempt took 17 minutes. Universal precautions means any and all samples, whether known or unknown, are to be treated as potentially hazardous (or pathogenic) materials. Your Answer: Universal precaution refers to the treatment by lab handler of unknown samples. They must treat them all like they could be pathogenic, so PPE must be worn. Define the concept of universal precautions.

Question 1 0 /^0 pts

Question 2 0 /^0 pts

What would a researcher be certain to note while analyzing a microbial sample? Your Answer: The size, shape and motility of a sample. A lab researcher would be certain to note

1. Size and shape
2. Any observable motility
3. Gram status (positive or negative)
4. The presence of any chemical reactions
5. Changes in color localized to the organism or the surrounding media
6. Capture (or draw) images of any of the characteristics described above A BAP (blood agar plate) would be the quickest way to identify and classify a potential streptococcus microbe based on its hemolytic properties. Your Answer: BAP is the best way to identify a Step sample. Which non-selective yet differential agar plate should be used if a Streptococcus sample is suspected? Question 3 0 /^0 pts

What is a facultative anaerobe? Rheumatic fever occurs in approximately 3% of untreated cases of streptococcal pharyngitis, presenting approximately 2- 3 weeks post-infection. Your Answer: Rheumatic fever. What disease can result if a patient with streptococcal pharyngitis goes untreated? Question 4 0 /^0 pts All of the above foreign microbes are capable of causing septicemia, also known as blood poisoning. Your Answer: Septicemia. Streptococcus, E. coli, pseudomonas, and klebsiella are all capable of causing what disease? Question 5 0 /^0 pts Question 6 0 /^0 pts

According to the module, which mycobacterium infection will be treated free of charge by the World Health Organization (WHO)? Your Answer: Leprosy. The causative agent of impetigo is staph aureus, a Gram-positive bacterium capable of fermenting mannitol. Fermentation will lower the pH of the agar and change the dye color from red to yellow. To stain for TB, one would utilize an acid-fast stain to best visual the foreign microbe. As a mycobacterium tuberculosis would stain poorly (indeterminate) using the Gram stain. Your Answer: An acid-fast stain would be best, as it does not show Gram-positive staining well. If a patient were suspected to have tuberculosis (TB), which differential stain would you select and why? Question 9 0 /^0 pts Question 10 0 /^0 pts

Question 11 0 /^0 pts What are the three main conditions caused by the botulism toxin? Your Answer: Foodborne botulism, Infant botulism, wound botulism. Foodborne, infant and wound. Foodborne botulism is often the result of improperly canned, contaminated, low-acidic foods such as green beans, corn and beats. Infant botulism occurs when children, usually under the age of 6 months consume foods containing the bacteria. A potential source of infant botulism is honey (which is why pediatricians recommend avoiding feeding honey to infants) but can also be found in common places such as soil. Wound botulism occurs when C. botulinum bacteria colonize a deep wound, often a puncture such as those who inject street drugs such as heroine. As contaminated needles are injected through the skin, spores enter the body and, in the absence of oxygen, release the toxin. Why are infants (< 6 months) more susceptible to botulism? Your Answer: Leprosy is completely curable using a multiple-drug therapy regimen consisting of various combinations of the drugs dapsone, rifampin and clofazimine—all of which is given free of charge. Question 12 0 /^0 pts

Question 15 0 /^0 pts What are the three forms of plague, and what regions do they affect? Your Answer: Bubonic (lymph nodes) Pneumonic (lungs) Septicemic (blood) Bubonic (lymph), pneumonic (lungs) and septicemic (blood). Bubonic plague is best characterized by painfully swollen lymph nodes. Pneumonic plague affects the respiratory system (lungs). The most rare of all three plagues, septicemic plague targets the blood system and, if left untreated, will develop into a life- threatening illness as the blood-borne bacteria can infect all major organs. Your Answer: Legionella pneumophila. Legionella is often associated with unclean water systems such as hot tubs, hot water tanks and AC units. Notably, legionella can only be transmitted through water droplets small enough to be inhaled. Question 16 0 /^0 pts

Quiz Score: 0 out of 0 According to the module, which STD might be best identified via dark-field microscopy? Your Answer: Syphilis. Syphilis. The causative agent, treponema pallidum, is a thin spirochete, making Gram staining (and visualization) difficult. Treponema is therefore most often best identified via dark-field microscopy.