Which of the following leads to naturally acquired passive immunity?
Child contracting chickenpox in daycare
Antiserum injected after snake bite
Flu vaccine administered at clinic
Antibodies transferred to an infant during breastfeeding or pregnancy
The Correct Answer is D
A. Child contracting chickenpox in daycare: Represents naturally acquired active immunity, because the child’s immune system responds to the infection and produces its own antibodies.
B. Antiserum injected after snake bite: Represents artificially acquired passive immunity, since ready-made antibodies are given.
C. Flu vaccine administered at clinic: Represents artificially acquired active immunity, since antigens stimulate the body’s immune response.
D. Antibodies transferred to an infant during breastfeeding or pregnancy: Represents naturally acquired passive immunity, as antibodies from the mother provide temporary protection to the infant.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. An isotonic solution: Has the same solute concentration as the cell interior, so water movement is balanced and the cell size remains unchanged.
B. Hypotonic solution: Has lower solute concentration outside the cell, so water enters the cell, causing swelling or lysis.
C. Hydrostatic solution: Refers to fluid pressure exerted by a liquid, not osmotic balance related to cell size.
D. Hypertonic solution: Has higher solute concentration outside the cell, so water leaves the cell, causing shrinkage (crenation).
Correct Answer is B
Explanation
A. Smooth ER: Involved in lipid synthesis, detoxification, and calcium storage in some cells, not the primary ATP generator.
B. Mitochondria: Organelles that perform oxidative phosphorylation and produce most of the cell’s ATP (energy).
C. Golgi apparatus: Modifies, sorts, and packages proteins and lipids for secretion or delivery to organelles, not energy production.
D. Ribosome: Sites of protein synthesis (translate mRNA), not the main source of cellular energy.
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