The Nervous System: Membrane Potential 1. Record the intracellular and extracellular concentrations of the following ions (mM/L): Intracellular Extracellular Sodium (Na+) Potassium (K+) Chloride (Cl–) 2. Excitable cells‚ like neurons‚ are more permeable to ___________ than to ___________. 3. How would the following alterations affect the membrane permeability to K+? Use arrows to indicate the change in permeability. a. An increase in the number of passive K+ channels
Premium Neuron Action potential Nervous system
potassium compound formed by burning wood. Also during this time‚ people did not pick up on any distinctions between potassium and sodium‚ deeming them as the same element. In 1807‚ Sir Humphrey Davy discovered a difference in the two‚ therefore finding potassium. Thanks to this discovery‚ we now use potassium for a variety of things‚ such as liquid detergents‚ low-sodium salt‚ oxidizing agents‚ fireworks‚ fertilizers‚ heat- transfer medium‚ and many more. Works Cited “Bases- pH Values.” TheEngineeringToolBox
Premium Potassium Chemical element Metal
Chapter 9 1) Approximately how much water do you need each day to stay healthy? Water constitutes 50% to 70% of the human body. Its unique chemical properties enable it to dissolve substances as well as serve as medium for chemical reactions‚ temperature regulation and lubrication (found in the knees and other joints of the body); it also aids in regulating the acid base balance in the body. It helps remove waste from the body and is the basis for saliva‚ bile and amniotic fluid. It is
Premium Muscle Sodium Nutrition
An example of potential energy is A) a coiled spring. B) running water. C) tree branches blowing in the breeze. D) a moving elevator. E) electrical energy. Points Earned: 1.0/1.0 The correct answer is A. The definition of potential energy is an inactive type of energy that is stored for future use. All of these answers describe active energy‚ for example‚ running water is very active but can generate other types of energy. Which one of the following substances will float in gasoline
Premium Atom Energy Chemistry
Conditions That Can Affect Blood Results Using Luminol The purpose of this science experiment was to discover under what conditions can blood give a false result using the presumptive test called luminol. In order to better grasp the experiment‚ research was conducted on several subtopics: the basic concept of luminol‚ the basic concept of artificial blood which is being used for this experiment instead of legitimate blood‚ and substances interferences that could tamper with crime scene results
Premium Forensic science Blood Chemistry
such as the Nernst potential. In terms of membrane transport the gradient is of interest as it contributes to increased system entropy in the co-transport of substances against their gradient. One of the most important pumps in animal cells is the sodium potassium pump‚ that operates through the following mechanism:[7] binding of three Na+ ions to their active sites on the pump which are bound to ATP. ATP is hydrolyzed leading to phosphorylation of the cytoplasmic side of the pump‚ this induces
Premium Potassium Adenosine triphosphate Cell
Water Treatment Mid-Term 1) Total Cell Volume (TCV) is an indirect measure of the: a. Blood Leak b. Contamination of the dialyzer c. Performance of the dialyzer d. Residual chemicals 2) The organization that sets the standards for dialysis water quality is called: a. AAMI b. JCAHO c. KDOQI d. USRDS 3) Total chlorine levels in the water are tested: a. at the end of the day b. at the beginning and the end of the day c. before each patients shift or every four hours
Premium Water Water purification Dialysis
Science Coursework-Rates of Reactions Introduction Investigating how the concentration of sodium-thiosulphate (STS) and hydrochloric acid (HCL) affects the rate of reaction in the experiment. In addition I am also checking how different variables affect my experiment and also how I can make my test more precise‚ reliable and accurate. Strategy According to my results‚ as the concentration of STS solution increased the rate of reaction of my experiment was increased. Also as the concentration
Premium Chemical reaction Chemistry Reaction rate
reacts with aqueous solution of hydrochloric acid to form zinc chloride solution and hydrogen gas. b. Solid mercury (II) oxide is heated‚ liquid mercury and oxygen gas is produced. c. Aqueous solution of sulphuric acid and sodium hydroxide react to form aqueous sodium sulphate and water. 2. Balance the following equation. a. Fe(s)+CuSo4 (aq)---(FeSo4(aq)+Cu(s) b.H2So2(aq)+NaOH(aq)-(Na2SO4(aq)+H2O(l) c.Ba(OH)2(aq)+HBr(aq)-(BaBr2(aq)+H 2O(l) 3.What is differences between
Premium Hydrogen Iron Nitrogen
major minerals and include sodium‚ potassium‚ chloride‚ calcium‚ phosphorus and sulfur. Microminerals or trace elements are needed in smaller quantities and include iron‚ copper‚ zinc‚ selenium and iodine amongst others. Although trace elements are needed in smaller amounts‚ they are just as essential to health as major minerals. Minerals are essential to various functions in the body. Sodium‚ potassium and chloride are all necessary for fluid balance. Magnesium‚ sodium‚ calcium and potassium are
Premium Nutrition Dietary mineral Mineral