FREE UWorld Active Learning Questions and Answers
A 25-year-old female presents with fatigue, pallor, and glossitis. Laboratory tests reveal hemoglobin of 8.5 g/dL, mean corpuscular volume (MCV) of 105 fL, and hypersegmented neutrophils on a peripheral smear. Which of the following is the most likely diagnosis?
The elevated MCV (macrocytic anemia) and hypersegmented neutrophils are hallmarks of megaloblastic anemia, most commonly caused by vitamin B12 or folate deficiency. The presence of glossitis further supports vitamin B12 deficiency.
A nurse is preparing to administer an intravenous (IV) antibiotic to a patient. Which of the following steps is the most appropriate to prevent medication errors?
Confirming allergies is critical to prevent adverse drug reactions. Additionally, following the "5 Rights" of medication administration (right patient, drug, dose, route, and time) is essential to ensure patient safety.
Read the passage below and answer the question that follows:
"The innovations of the 21st century have undoubtedly improved communication. However, they have also fostered a reliance on technology that may impede face-to-face social interactions."
Which statement best supports the author’s argument?
This statement directly supports the author’s argument by providing evidence that technology reliance may negatively affect interpersonal communication.
A rectangular room has a length of 12 meters and a width of 9 meters. If the room's floor is to be tiled, and each tile covers an area of 0.36 square meters, how many tiles are needed?
The area of the room is 12×9=108 square meters. Dividing by the area of each tile:
108÷0.36=300
Thus, 300 tiles are needed.
A farmer has 10 cows, 5 chickens, and 3 goats. If he sells 40% of his cows, how many cows does he have left?
The farmer sells 40% of 10 cows:
0.4×10=4
Subtracting, he has 10−4=6 cows left.