PAX Science NLN Exam-Questions and Answers

PAX Science NLN Exam 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: 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: 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: 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 limewater solution cloudy. This gas is most probably A.) ammonia. B.) methane. C.) carbon dioxide. C.) hydrogen. answer: carbon dioxide. Human testes produce A.) eggs. B.) follicle stimulating hormone. C.) growth hormone. D.) spermatozoa. answer: spermatozoa. If a red light is passed through a dilute solution of chlorophyll solution, the spectrophotometer will detect what amount of transmittance of this light? A.) 100% B.) 50 - 75% C.) Less than 25% D.) None answer: 50 - 75% In diagnostic testing, the electroencephalogram permits the physician to A.) examine the impulses of the specialized muscle cells of the heart. B.) examine the impulses of the nerve cells within the brain. C.) measure the pressure within the eye. D.) measure the amount of air upon exhalation. answer: examine the impulses of the nerve cells within the brain.