Nernst equation Study guides, Revision notes & Summaries

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...

NACE CP2 Exam Questions and Answers (Verified Answers) 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 d Metal loss or corrosion occurs at the A) cathode B) anode C) electronic path D) metallic path b What are the four parts of the corrosion cell A) anode, resisto...

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 ...

Chemistry Final Exam (Answered) Oxidation Rules Rule 1: The oxidation number of an element in its free state = 0 (Also true for diatomic elements) -Mg=0,H2=0, C=0 Rule 2: The oxidation number of a monatomic (one-atom) ion is the same as the charge on the ion -Mg^2+=+2, Na^+=+1, O^2-=-2 Rule 3: The sum of all oxidation numbers in a neutral compound is zero. The sum of all oxidation numbers in a polyatomic (many-atom) ion is equal to the charge on the ion. Rule 4: The oxidation numb...

__________ is an unequal distribution of charges that exist across the membrane, leaving the inside cell negatively charged compared to the outside correct answer: membrane potential there are more __________ molecules than __________ molecules in the membrane potential correct answer: negative; positive __________ is in the highest concentration than other ions in the membrane potential correct answer: K+ during membrane potential of K+, the __________ constantly brings in K+ correc...

CBNS/ STUDY GUIDE 5-6, STUDY GUIDE 3-4, STUDY GUIDE 1-2 QUESTIONS AND ANSWERS, RATED A+/ The Nernst Equation is used to predict: - -The equilibrium potential of a single membrane permeant ion The Goldman Equation is used to predict: - ->The equilibrium potential of a single membrane-permeant ion >The contribution of multiple permeant ions to Em Consider the frog muscle study published by Hodgkin and Horowicz (1959) that was presented in Lecture 5. Doubling [K]o from 10 mM to 20...

Excitable CellsWhat is the charge of the resting membrane potential of all cells? Does the ICF or the ECF carry this charge? What is the average RMP value? Do most cells have an RMP that exists in a broad range or a narrow range? - correct answer All cells carry a negative resting membrane potential, and the ICF is negatively charged relative to the ECF. The average RMP value = -70mV. Most cells have an RMP that is small and w/in a narrow range. What types of cells are excitable cells? What i...

PNB Bonus Exam Questions and Answers Already Passed Propagation of an action potential in a myelinated axon involves which of the following? All of the above The central nervous system includes the ______. All of the above The concentration of cation X(+) is 500mM inside the cell, and 100mM outside of the cell. Assuming that the membrane is permeable to X: The equilibrium potential for X would be negative The membrane is selectively permeable to all of the following EXCEPT: oxyge...

WCU - PHYS 261 FINAL EXAM LATEST ANSWERS 2023. Nucleic acids are polymers of units called A) ribose. B) bases. C) fatty acids. D) amino acids. E) nucleotides. 6) Cell membranes are said to be A) actively permeable. B) impermeable. C) freely permeable. D) selectively permeable. E) none of the above 7) In humans, only __________ cells have flagella. A) sperm B) intestine lining C) stomach lining D) respiratory tract lining E) two of the above 8) The addition of a phosphate group to a substrate is ...

Resting Membrane Potential Electrical gradients (such as the transmembrane voltage or RMP) only affects what kind of molecules? - correct answer Charged molecules What is the range of magnitudes (in millivolts) of the resting membrane potential (RMP) of human cells? - correct answer -20 to -100mv Is the inside of the cell electrically negative, or electrically positive, RELATIVE to the extracellular fluid? - correct answer negative How many volts is a millivolt? - correct answer 10^-3 ...