NLN PAX RN Questions with correct Answers 2023

NLN PAX RN Questions with correct Answers 2023 Alimentary canal definition begins at mouth, ends at anus... digestive system A neuron that transmits impulses from receptors to the spinal cord sensory neuron Kinetic energy is at a maximum when the potential energy is... at a minimum, for example at the bottom of an incline The more rapid the vibration of sound is, the ____________ the __________ is higher, pitch What is the temperature during a phase change from liquid to gas? Temperature 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? It would remain a gas.... it would change back to liquid or condense if heat was withdrawn Neutralization reactions from _____ and _______. Water and a salt What organ controls the amount of calcium in the blood? Parathyroid - Secreted PTH - Calcium low = release calcium - Calcium high = calcium deposits in bone Celsius to Farenheit equation 9/5 x Celsius + 32 What tells you that a formula is an alcohol? -OH If a car's rate of change of velocity is negative, the car is ________. Slowing down What type of solution is an alkaline solution? Basic What type of facilitation is needed to go down a concentration gradient? Active transport Which of these biological processes includes the other 3? a) cell respiration b) Krebs cycle c) ETC d) anaerobic splitting of glucose 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 b) similar sequence of AA and proteins Bending of light Refraction What makes up proteins? Amino Acids Einsteins equation E=mc^2.... what does c represent? c = speed of light More energy is used pushing an object up an inclined plane than lifting the box straight up. Why is this? 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 wavelength Most of the work done by the human kidney occurs in the nephron Where is food stored in a growing embryo of a bean seed? The endosperm... large area inside the embryo In NaCl(aq), the solvent is __________. Water. Because (aq) implies that NaCl will be put into water What turns starch blue-black? Lugol's solution Ohm's law is the study of ___________. Electricity What temperature cannot occur? Anything below 0 Kelvin What organisms are Protists? fungi, ferns, mollusks What is a half life? 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. Neutrons What makes up the atomic mass? Protons and Neutrons What makes up the atomic number? Protons and Electrons If you chew a bland cracker slowly, what will it fast like? And why? Sweet because the enzyme amylase breaks down starches to sugars A compound that acts like either an acid or a base amphoteric - water is an example What delivers oxygen in the blood? Red blood cells What part of the cell regulates intake and outtake from an animal cell? Plasma membrane If your gallbladder is removed, what substance will you have the most difficulty digesting? 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 ____________. m-RNA What is the function of a battery? Changes mechanical energy into electrical energy What does Benedict's solution test for? Glucose (sugars) - from clear blue to red for a positive rxn Atomic number # of protons Mass number # of protons and neutrons An atom has the same number of _______ and __________. Protons and electrons The pitch of a string is affected by thickness, length, and frequency Pitch is independent from amplitude - related to loudness Which part of a compound microscope adjusts the amount of light? diaphragm What term refers to the capacity of a microscope to distinguish between objects that lie close to each other? resolving power Equilibrium constant product of PRODUCTS / product of REACTANTS Which is a nonmetal? Na, Hg, S, Mn Sulfur is a nonmetal Machines cannot _______________ energy increase - this is due to the conservation of energy Power Equation Voltage x current A 36 W lamp is operated by a 9 v battery. How many amperes of current flow through? power = voltage x current 36W = 9V x current in amperes 36/9 = 4 amperes What are the sites of protein synthesis in a cell? ribosomes - which are located on the rough ER Aerobic respiration uses ________. Oxygen - oxygen will be a reactant What is acetylcholine? neurotransmitter - sends info from one neuron to the next