Nernst - Study guides, Class notes & Summaries

NRSC 434 - Exam 1 Questions and answers, rated A+ what is the equilibrium potential of an ion and how can it be calculated - -- the membrane potential at which there no net movement of a specific ion; - calculated by the Nernst equation: (Ek = RT/zF (ln [K]out / ln [K]in)) ACh; - precursor, synthesis, degredation - -- Acetyl CoA + choline --> (choline acetyltransferase) --> ACh - degraded by acetylcholinesterase what are the features of a neuron and what are their functions? - ...

Diffusion: A. Carries particles away from equilibrium B. Requires energy c. occurs due to random motion of particles d. is a type of active transport e. only occurs in biological systems c. Diffusion occurs due to random motion of particles The Nernst equation a. Calculates equilibrium potential across the membrane b. Takes into account ionic concentration c. Does not take into account the permeability of the membrane d. Both a and b e. All of the above e. The nernst equation calcul...

CMB1004 Excitable Cells Exam Questions With 100% Verified Answers What are the four regions of a neurone? - answerDendrites Cell Body Axon Axon Terminal Define an excitable cell - answerAny cell capable of generating an action potential Describe how the resting potential is maintained - answerCell contains slight -ve charge (70mv) Maintained via high permeability of membrane to K+ and active transport of Na+ across membrane Define an action potential - answerA rapid change in membrane...

VMED 5171 - Exam 1 Practice Question (Dr. Strain) (Latest 2024 / 2025 UPDATES STUDY) Exam Reviews | Questions and Verified Answers | 100% Correct | Grade A VMED 5171 - Exam 1 Practice Question (Dr. Strain) C - -Which one of the following will not increase action potential conduction velocity? A.Myelination B.Increased axon diameter C.Decreased temperature D.Pre-existing membrane depolarization A - -Voltage-gated Na+ channels: A.Inactivate shortly after activation B.Are located on post-...

Steps for an Action Potential - Depolarizing stimulus, if threshold is met - Na+ and K+ channels begin to open, Na+ enters the cell and depolarizes it, Na+ channels close and K+ channels open fully, K+ exits the cell until it is hyperpolarized, K+ channels close, cell returns to resting membrane potential Membrane permeability of molecules (most to least) - Lipophilic, small & non-polar, small & polar, large & polar, charged Sodium-potassium pump function - Pump 3 Na out, and 2 K in SGLT (...

Acytelcholine - Answer--Excitatory; increases muscle contraction and depresses parasympathetic system. Associated with learning, memory, and attention → too little leads to Alzheimer's -Basal forebrain→ contains nucleus basalis -Targeted by Nicotine and succinylcholine Adaptation - Answer-The slowing of action potential firing overtime -Occurs in K+ Hyperpolarization Channels Agonist vs. Antagonist - Answer-Agonist: Chemical binds to the same site as an endogenous substance (e.g., ne...

Which of the following shows the correct order of increasing strength as an oxidizing agent? - correct answers K+ (aq) < MnO4- (aq) < O3 (g) What is the pH of the standard hydrogen electrode? - correct answers pH = 0 What is the correct cell notation for the reaction below? Cu2+ (aq) + Pb (s) ⇔ Cu (s) + Pb2+ (aq) - correct answers Pb (s) I Pb2+ (aq) II Cu2+ (aq) I Cu (s) Calculate standard cell potential for the following reaction: MnO4- (aq) + 8 H+ (aq) + 5 Fe2+ ⇔ Mn2+ + 4 ...

There were different examples of transport proteins given in class. What type is GLUT? passive transport channel What type is the Na+/K+ pump? What type is the Na+/glucose symporter? primary active transport, secondary active transport What is digoxin and what does it do? blocks sodium potassium pumps, increases sodium on inside and potassium decreases on the inside (purple fox glove flower) what did Giuseppe antonio anastasio volta invent? invented the batteries What is a cell's resting me...

Test Bank - Berne and Levy Physiology 7th Edition (Koeppen 2023/2024) Complete Guide Latest Version A+. Berne and Levy Physiology 7th Edition KoeppenTest Bank Koeppen: Berne and Levy Physiology, 7th Edition Chapter 01: Principles of Cell FunctionTest Bank Multiple Choice 1. The subcellular structure that degrades proteins is called the: A. Tight junction B. Mitochondria C. Lysosome D. Plasma membrane E. Ribosome ANS: C 2. An experiment is done to measure the uptake of an amino acid ...

NACE CP2 – EXAM QUESTIONS AND ANSWERS LATEST 2023 GRADED A+. NACE 2008 Student Manual! START OF CHAPTER 1 Corrosion is an electrochemical process involving A) flow of protons and electrons B) flow of neutrons and ions C) flow of protons and ions D) flow of electrons and ions E) flow of resistance and resistivity - correct answer d Metal loss or corrosion occurs at the A) cathode B) anode C) electronic path D) metallic path - correct answer b What are the four parts of the corrosi...