ATI RN
openstax microbiology test bank Questions
Question 1 of 5
Which one is NOT included in the etiology of osteomyelitis
Correct Answer: B
Rationale: The correct answer is B: EBV. Osteomyelitis is primarily caused by bacteria, not viruses like Epstein-Barr virus (EBV). The main pathogens involved in osteomyelitis are typically Staphylococcus aureus, including Methicillin-resistant Staphylococcus aureus (MRS
A), Haemophilus influenzae, and Pseudomonas aeruginosa. EBV is not a causative agent of osteomyelitis. It is crucial to differentiate between bacterial and viral etiologies in infectious diseases to guide appropriate treatment.
Question 2 of 5
Which of the following is an active transport mechanism?
Correct Answer: D
Rationale: The correct answer is D: pinocytosis. This is an active transport mechanism where cells engulf fluids or solutes through vesicles. Energy is required to transport substances against a concentration gradient. A is incorrect as pinocytosis is an active process, not passive like pinocytosis. B is incorrect as facilitated diffusion is a passive process that uses carrier proteins to move substances down a concentration gradient. C is incorrect as filtration is a passive process that relies on pressure gradients to move substances across a barrier.
Therefore, D is the correct choice as it involves the active transport of substances into the cell.
Question 3 of 5
A unique number that aids in finding additional toxicological information about a specific substance is the
Correct Answer: D
Rationale: The correct answer is D: RTECS number. The Registry of
Toxic Effects of Chemical Substances (RTECS) number is a unique identifier assigned to chemicals and substances known to cause toxicological effects. It aids in accessing detailed toxicological information such as acute toxicity, carcinogenicity, and mutagenicity. The CAS number (
A) is a unique numerical identifier for chemical compounds, not specifically for toxicological information. The atomic number (
B) is the number of protons in an element's nucleus, unrelated to toxicology. The DOT ID number (
C) is used for hazardous materials transportation, not for toxicological information.
Therefore, the RTECS number is the correct choice for finding toxicological information about a specific substance.
Question 4 of 5
Which of the following bacteria is commonly associated with food poisoning?
Correct Answer: D
Rationale: The correct answer is D: All of the above. Salmonella enterica, Clostridium botulinum, and Escherichia coli are all commonly associated with food poisoning. Salmonella causes symptoms like diarrhea, vomiting, and abdominal cramps. Clostridium botulinum produces a toxin that leads to symptoms like muscle weakness and paralysis. Escherichia coli can cause symptoms like severe stomach cramps, diarrhea (often bloody), and vomiting.
Therefore, all three bacteria are known to cause food poisoning. The other choices are incorrect because each of the bacteria listed is associated with food poisoning.
Question 5 of 5
Koch apparatus uses temperature of:
Correct Answer: C
Rationale: The correct answer is C (100°
C) because the Koch apparatus is used for sterilization, and the standard temperature for sterilization is 100°C. At this temperature, most microorganisms are killed, making it an effective method for sterilization.
Choice A (90°
C), B (95°
C), and D (110°
C) are incorrect because they are not commonly used temperatures for sterilization purposes. Choosing a temperature lower than 100°C may not effectively kill all microorganisms, while choosing a temperature higher than 100°C may lead to unnecessary energy consumption without providing additional sterilization benefits.