NLN PAX Science Exam Questions With Correct Answers

NLN PAX Science Exam Questions With Correct Answers specific heat - CORRECT ANSWER 1 kg of solid X at 10 C and 1kg of solid y at 10 C each absorb 5 joules of heat energy. The final temperatures of X and Y are 15 C and 20 C, respectively. Compared to X,Y must have a lower Carbon Dioxide - CORRECT ANSWER A person blows his breath into a straw that is placed in limewater. The limewater becomes cloudy because the persons breath contains sprematozoa - CORRECT ANSWER human testes produce Vitamin A - CORRECT ANSWER Night blindness in humans is caused by a lack of Br2 (l) -> Br2 (g) - CORRECT ANSWER heat energy is absorbed in which of these phase changes? Goiter - CORRECT ANSWER Iodized salt is used to prevent a human condition known as kidney - CORRECT ANSWER The organ that filters metabolic waste from the blood is the Nonmetals - CORRECT ANSWER the atoms of an element with seven valence electrons are most probably classified as Cell plates are synthesized - CORRECT ANSWER The process of nuclear cell division in the cell reproduction of plants differs from mammals. A major difference is that 2Na + Cl2 -> 2NaCl one side balanced no pluses or minus - CORRECT ANSWER Which of these equations best illustrates a synthesis reaction Toluene - CORRECT ANSWER Which of these hydrocarbons is a member of the benzene family? Blue-green algae - CORRECT ANSWER Which of these organisms use nitrogen directly from the air? Calorie and Joules - CORRECT ANSWER Which of these pairs measures the same quantity? Anaerobic Respiration - CORRECT ANSWER Which of these processes is responsible for the recorded production of CO2 by yeast cells from sugar solution? Mass - CORRECT ANSWER Which of these quantities is most closely associated with an object's inertia? From tissue, organ, organ system, to organism - CORRECT ANSWER Which of these sequences of anatomic organization, from the simplest level to the most complex, is the correct sequence? O2 - CORRECT ANSWER Which of these substances contains a nonpolar covalent bond? 0 K - CORRECT ANSWER Absolute Zero Plasma Membrane - CORRECT ANSWER Which part of the cell structure controls the passage of materials into and out of the cell? Cerebrum - CORRECT ANSWER Which part of the CNS controls voluntary movements? ruptured platelets release thromboplastin - CORRECT ANSWER A person who was in an auto accident has formed a blood clot at the site of injury. One event that can lead to formation of a blood clot is that 120/80 mm Hg - CORRECT ANSWER 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? Carbon Dioxide - CORRECT ANSWER An unknown gas is more dense than air, does not support combustion, and turns limewater solution cloudy. This gas is most probably evaporation of water from plants - CORRECT ANSWER Guard cells which can be found in the leaves of plants are most closely associated with which of these processes? 50-75% - CORRECT ANSWER If a red light passes through a dilute solution of chlorophyll solution, the spectrophotometer will detect what amount of light transmittance of this light? Difficulty Breathing - CORRECT ANSWER If the medulla of the brain in a human was damaged, which of these conditions would most likely result? Boiling in water for 15 minutes - CORRECT ANSWER To sterilize a metal probe in the office, a dentist could use a steam sterilizer. If unavailable, the next most effective method to sterilize the instrument would be mixtures, but not elements or compounds - CORRECT ANSWER In varieties of matter, the term heterogeneous may be applied to Gum tissue surrounding teeth - CORRECT ANSWER Periodontitis is an inflammatory condition of the Diffraction - CORRECT ANSWER the bending of a wave around an obstacle is known as genotype - CORRECT ANSWER The inherited factors that are transmitted in an organism from generation to generation are called its Protozoans - CORRECT ANSWER Unicellular organisms that have a nucleus and can swim with the aid of cilia are examples of protons and neutrons - CORRECT ANSWER which of these particles can only be found in the nucleus of an atom Energy - CORRECT ANSWER Which of these is a vector quantity ammeter - CORRECT ANSWER Instrument used to measure current flowing through a circuit plasma membrane - CORRECT ANSWER cell structure that controls the passage of materials into and out of the cell wash wound continuously with cold running water - CORRECT ANSWER Cut finger rather deeply while slicing an apple what should you do? 9w - CORRECT ANSWER circuit contains three 3-ohm resistors in series. what is the total resistance of that circuit? element - CORRECT ANSWER A substance that cannot be broken down into simpler substances oxygen - CORRECT ANSWER room temperature substance that exists as diatomic molecules hormones - CORRECT ANSWER Ductless glands in the human body secrete increase in first order consumers - CORRECT ANSWER If all the second order consumers within an ecosystem where removed, the most likely short-term effect would be Alveoli - CORRECT ANSWER most internal gas exchanges in the human respiratory tract occurs across the capillaries of which of these structures? Tendon - CORRECT ANSWER Connects muscle to bone there are fewer cones and a greater concentration of rods for night vision - CORRECT ANSWER Nocturnal animals rods and cones in eyes for night vivsion power - CORRECT ANSWER Watt is a unit of 7 - CORRECT ANSWER The atomic number of flourine is 9. How many electrons are contained in the second principle energy level of a flourine atom in the ground state? human genome - CORRECT ANSWER full set of genes in an individual osmosis - CORRECT ANSWER the process known for water passing through a selectively permeable membrane from a region of greater concentration reproductive system - CORRECT ANSWER The system of the human body where meiosis occurs