ATI RN
Immune System Quizlet Questions
Question 1 of 5
Following class of restriction endonucleases is commercially available and used in recombinant DNA technology:
Correct Answer: B
Rationale: The correct answer is B: Class 2. Class 2 restriction endonucleases are commonly used in recombinant DNA technology due to their specificity for recognizing short DNA sequences and cleaving within or near these sequences. They are commercially available, easy to use, and have well-defined recognition sites, making them ideal for molecular cloning applications. Choice A (Class 1) is incorrect because Class 1 enzymes require both ATP and S-adenosyl methionine for activity, making them less practical for routine laboratory use. Choice C (Class 3) is incorrect because Class 3 enzymes cleave DNA at two sites, potentially leading to unwanted DNA fragmentation in recombinant DNA technology. Choice D (Class 5) is incorrect because Class 5 restriction enzymes do not exist in the classification system of restriction endonucleases.
Question 2 of 5
Which of the following causes memory cells to convert to plasma cells?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 3 of 5
What is the role of a nurse during the scratch test to detect allergies?
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
A client is being taught about the transmission of HIV and is taught that body fluids such as blood,semen and vaginal secretions can transmit the virus. What is the other body fluid that the HIV virus can be transmitted through?
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
You give an intradermal injection of allergen to a patient who is undergoing skin testing for allergies. A few minutes later,the patient complains about feeling anxious short of breath and dizzy. You notice that the patient has reddened blotches on the face and arms. All of these therapies are available on your emergency cart. Which action should you take first?
Correct Answer: C
Rationale: The patient is showing signs of anaphylaxis,a life-threatening allergic reaction. The first priority is to administer epinephrine which acts quickly to reverse the symptoms by constricting blood vessels relaxing airway muscles and increasing heart rate. Oxygen and IV access are important but secondary to the immediate administration of epinephrine. Albuterol may be used for bronchospasm but is not the first-line treatment for anaphylaxis.