ATI RN
Immune System Test Quizlet Questions
Question 1 of 5
Which of the following is NOT a property of CD8+ T cells?
Correct Answer: D
Rationale: The correct answer is D because CD8+ T cells are not responsible for antibody-dependent cell-mediated cytotoxicity. A is correct as CD8+ T cells differentiate into cytotoxic T cells. B is correct as CD8+ T cells recognize peptide antigens with MHC molecules. C is correct as CD8+ T cells are vital in defense against intracellular pathogens. D is incorrect as CD8+ T cells do not mediate cell cytotoxicity through antibodies.
Question 2 of 5
Which of the following is not a Covid-19 vaccine?
Correct Answer: A
Rationale: Step-by-step rationale: 1. Nuvaxovid is not a known Covid-19 vaccine. 2. Covovax and Moderna are both established Covid-19 vaccines. 3. "None of the above" includes all listed options, so it is not the correct answer. 4. Therefore, the correct answer is A: Nuvaxovid, as it is not a recognized Covid-19 vaccine.
Question 3 of 5
The nurse is administering medications to a patient. Which medications should the nurse understand is being given to suppress C-reactive protein levels?
Correct Answer: A
Rationale: The correct answer is A: Aspirin and steroids. Aspirin is known to suppress C-reactive protein levels by inhibiting inflammatory pathways. Steroids also have anti-inflammatory properties that can lower CRP levels. Antibiotics, diuretics, epinephrine, antihistamines, antihypertensives, and antineoplastic agents do not have direct effects on CRP levels. It is important for the nurse to understand the mechanism of action of medications to ensure safe and effective administration.
Question 4 of 5
The nurse is reviewing the immune system with a patient newly diagnosed with an autoimmune disorder. What should the nurse explain as the purpose of antibodies?
Correct Answer: D
Rationale: The correct answer is D. Antibodies attach to antigens to label them for destruction. This is crucial in the immune response to identify and mark harmful substances for elimination. Choice A is incorrect because antibodies do not destroy antigens directly. Choice B is incorrect as antibodies are specific to particular antigens. Choice C is incorrect as blood type specificity is determined by different antigens, not antibodies.
Question 5 of 5
Ribosomes associated with cells or organelles have a certain size, which is expressed in Svedberg units. Which associations are incorrect?
Correct Answer: A
Rationale: The correct answer is A because cyanobacteria have ribosomes measured in 70s, not 80s. Ribosomes in prokaryotes are either 70s (composed of 50s and 30s subunits) or 80s in eukaryotes (60s and 40s subunits). Choices B, C, and D are incorrect because chloroplasts, photosynthetic bacteria, and green algal cytoplasm all have ribosomes measured in 70s or 80s, consistent with their cell types.