NLN PAX RN Science Exam with 100% Correct Answers 2023

Alimentary canal definition - Correct answer-begins at mouth, ends at anus... digestive system A neuron that transmits impulses from receptors to the spinal cord - Correct answersensory neuron Kinetic energy is at a maximum when the potential energy is... - Correct answer-at a minimum, for example at the bottom of an incline The more rapid the vibration of sound is, the ____________ the __________ is - Correct answer-higher, pitch What is the temperature during a phase change from liquid to gas? - Correct answerTemperature is constant at 100 degrees Celsius per 1 atm If the temperature rises to 300 degrees Celsius of a gas, the substance would do what? - Correct answer-It would remain a gas.... it would change back to liquid or condense if heat was withdrawn Neutralization reactions from _____ and _______. - Correct answer-Water and a salt What organ controls the amount of calcium in the blood? - Correct answer-Parathyroid - Secreted PTH - Calcium low = release calcium - Calcium high = calcium deposits in bone Celsius to Farenheit equation - Correct answer-9/5 x Celsius + 32 What tells you that a formula is an alcohol? - Correct answer--OH If a car's rate of change of velocity is negative, the car is ________. - Correct answerSlowing down What type of solution is an alkaline solution? - Correct answer-Basic What type of facilitation is needed to go down a concentration gradient? - Correct answer-Active transport Which of these biological processes includes the other 3? a) cell respiration b) Krebs cycle c) ETC d) anaerobic splitting of glucose - Correct answer-Cell respiration - Cell resp begins with splitting glucose. Products enter Krebs cycle and then ETC In the classification of 2 organisms, which of the following is the best evidence of a close relationship? a) # and arrangement of bones b) similar sequence of AA and proteins c) similar methods of sexual reproduction d) similar methods of cell respiration - Correct answer-b) similar sequence of AA and proteins Bending of light - Correct answer-Refraction What makes up proteins? - Correct answer-Amino Acids Einsteins equation E=mc^2.... what does c represent? - Correct answer-c = speed of light More energy is used pushing an object up an inclined plane than lifting the box straight up. Why is this? - Correct answer-work is done against friction in pushing the box. Energy goes into counteracting friction Tip of crest to tip of crest in a wave is called - Correct answer-wavelength Most of the work done by the human kidney occurs in the - Correct answer-nephron Where is food stored in a growing embryo of a bean seed? - Correct answer-The endosperm... large area inside the embryo In NaCl(aq), the solvent is __________. - Correct answer-Water. Because (aq) implies that NaCl will be put into water What turns starch blue-black? - Correct answer-Lugol's solution Ohm's law is the study of ___________. - Correct answer-Electricity What temperature cannot occur? - Correct answer-Anything below 0 Kelvin What organisms are Protists? - Correct answer-fungi, ferns, mollusks What is a half life? - Correct answer-One half life is the amount of time it takes for one half of the mass of a sample of radioactive substance to decay. Ex) Half life is 20 years for 12g. in 20 years.... 12/2 = 6g... in 40 years..... 6/2=3g Isotopes contain a different number of __________. But they have the same atomic number. - Correct answer-Neutrons What makes up the atomic mass? - Correct answer-Protons and Neutrons What makes up the atomic number? - Correct answer-Protons and Electrons If you chew a bland cracker slowly, what will it fast like? And why? - Correct answerSweet because the enzyme amylase breaks down starches to sugars A compound that acts like either an acid or a base - Correct answer-amphoteric - water is an example What delivers oxygen in the blood? - Correct answer-Red blood cells What part of the cell regulates intake and outtake from an animal cell? - Correct answerPlasma membrane If your gallbladder is removed, what substance will you have the most difficulty digesting? - Correct answer-Fats... the gallbladder stores bile, made up of bile salts which digest and absorb fats The code of a gene is delivered to the protein producing region of a cell by ____________. - Correct answer-m-RNA What is the function of a battery? - Correct answer-Changes mechanical energy into electrical energy What does Benedict's solution test for? - Correct answer-Glucose (sugars) - from clear blue to red for a positive rxn Atomic number - Correct answer-# of protons Mass number - Correct answer-# of protons and neutrons An atom has the same number of _______ and __________. - Correct answer-Protons and electrons The pitch of a string is affected by - Correct answer-thickness, length, and frequency Pitch is independent from - Correct answer-amplitude - related to loudness Which part of a compound microscope adjusts the amount of light? - Correct answerdiaphragm What term refers to the capacity of a microscope to distinguish between objects that lie close to each other? - Correct answer-resolving power Equilibrium constant - Correct answer-product of PRODUCTS / product of REACTANTS Which is a nonmetal? Na, Hg, S, Mn - Correct answer-Sulfur is a nonmetal