PAX Science NLN Exam Questions & Answers (Graded A)

A person blows his breath into a straw that is placed in limewater. The limewater becomes cloudy because the person's breath contains A.) carbon dioxide. B.) hydrogen. C.) oxygen. D.) nitrogen. - ANSWER-answer: carbon dioxide. A physician measures the pulse and blood pressure (BP) of all patients on a routine basis. Which of these measurements show the normal BP values for a resting adult patient? A.) 125/95 mm Hg B.) 120/80 mm Hg C.) 100/80 mm Hg D.) 72/120 mm Hg - ANSWER-answer: 120/80 mm Hg A woman suddenly chokes on a piece of food and clutches frantically at her throat. An immediate remedy is to A.) have her bend forward and tell her to cough. B.) insert a finger or a blunt object toward the back of the mouth. C.) apply quick, hard pressures successively to her abdomen, just beneath her diaphragm. D.) phone "emergency" for help. - ANSWER-answer: apply quick, hard pressures successively to her abdomen, just beneath her diaphragm. An unknown gas is more dense than air, does not support combustion, and turns a lime