ATI RN
Immune System Test Quizlet Questions
Question 1 of 5
An essential cofactor for restriction endonuclease enzyme activity is
Correct Answer: B
Rationale: The correct answer is B: Mg2+. Mg2+ is an essential cofactor for restriction endonuclease enzymes because it stabilizes the enzyme-substrate complex, promotes proper binding of the enzyme to DNA, and facilitates the catalytic activity of the enzyme. Mg2+ ions help in the coordination of the active site residues and the phosphate backbone of DNA, which is crucial for the cleavage of DNA strands. Zn2+, Co2+, and Ca2+ do not provide the necessary coordination and stabilization required for restriction endonuclease enzyme activity, making them incorrect choices.
Question 2 of 5
What percent of clients with chronic fatigue syndrome (CFS) will experience hypotension during a tilt table test,which can eventually be diagnostic for these clients?
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 3 of 5
A client with AIDS is experiencing bouts of diarrhea,anorexia,nausea and vomiting. Cryptosporidiosis is diagnosed and the nurse goes to hang the first antibiotic. Which type of macrolide antibiotic is the nurse going to hang?
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
Your patient with rheumatoid arthritis (RA) is taking prednisone (Deltasone) and naproxen (Alleve) to reduce inflammation and joint pain. Which of these symptoms is the strongest indicator that a change in therapy may be necessary?
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
As the hospital employee health nurse,you are completing a health history for a newly hired nursing assistant. Which information given by the new employee most indicates the need for further nursing action prior to orienting the nursing assistant to patient care?
Correct Answer: D
Rationale: A 5-mm induration on a TB skin test is considered positive in healthcare workers indicating possible exposure to tuberculosis. This requires further evaluation and possibly treatment before the nursing assistant can safely care for patients. The other information while important does not pose an immediate risk to patient care.