NLN PAX PREP SCIENCE QUESTIONS & ANSWERS 2022/2023 UPDATE

NLN PAX PREP SCIENCE QUESTIONS & ANSWERS 2022/2023 UPDATE NLN PAX PREP SCIENCE QUESTIONS & ANSWERS 2022/2023 UPDATE Which of these structures of the male reproductive system carries sperm cells from the testes to the lower part of the abdomen?Correct answer - Vas deferens A method for determining the blood alcohol content of a subject is toCorrect answer - Use a Breathalyzer A person blows his breath into a straw that is placed in limewater. The limewater becomes cloudy because the person's breath containsCorrect 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?Correct answer - 120/80 mm Hg A student focuses sunlight to a point with a thin converging (convex) lens. Which of these direct measurements can the student make as a result of this experiment?Correct answer - The approximate focal length of the lens. A woman suddenly chokes on a piece of food and clutches frantically at her throat. An immediate remedy is toCorrect answer - Apply quick, hard pressures successively to her abdomen, just beneath her diaphragm. An unknown gas is denser than air, does not support combustion, and turns a limewater solution cloudy. This gas is most probablyCorrect answer - Carbon dioxide Guard cells which can be found in the leaves of plants are most closely associated with which of these processes?Correct answer - Evaporation of water from the plant. Human testes produceCorrect 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?Correct answer - 50% - 75% If the medulla of the brain in a human was damaged, which of these conditions would most likely result?Correct answer - Difficulty in breathing In ecological succession, the first living thing to colonize a hitherto barren area is called A. producer B. primary consumer C. pioneer organism D. carnivoreCorrect answer - Pioneer organism In varieties of matter, the term heterogeneous may be applied toCorrect answer - Mixtures, but not elements or compounds The inherited factors that are transmitted in an organism from generation to generation are called its Homozygote.Correct answer - Genotype The organ that filters metabolic waste from the blood is the Small intestine.Correct answer - kidney Unicellular organisms that have a nucleus and can swim with the aid of cilia are examples of Monerans. A. monerans B. plants C. fungi D. protozoansCorrect answer - protozoans Which of these conditions is associated with smoking?Correct answer - Emphysema Which of these organisms use nitrogen directly from the air?Correct answer - Blue-green algae. Which of these particles can only be found in the nucleus of an atom?Correct answer - protons and neutron Which of these processes is responsible for the recorded production of CO2 by yeast cells from sugar solution?Correct answer - Anaerobic respiration Which of these quantities is a vector quantity?Correct answer - Energy Which of these temperatures is known as Absolute Zero?Correct answer - O ° K While working in the chemistry laboratory, a student spills dilute hydrochloric acid on her hand. What is the first action this student should take?Correct answer - Flush her hand with large quantities of water. Within which of these structures of the female reproductive tract is the human egg fertilized?Correct answer - Fallopian tube A cell which manufactures a large amount of protein for export would have an abundance of organelles calledCorrect answer - Ribosomes A substance that increases the speed of a reaction by lowering its activation energy is calledCorrect answer - A catalyst All of these groups of land plants produce seeds EXCEPT A. perennial flowering plants, such as peonies and asters. B. deciduous trees, such as maple and oaks.