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Cbns 120 Midterm 1 Questions With 100% Correct Answers!!

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31 pages

Written in 2024/2025

EvaTee

CBNS 120 QUIZ 2 MATERIAL EXAM REVIEW QUESTIONS AND ANSWERS, RATED A+ All cells have a ________ across their membranes consisting of a thin cloud of _______ separation of charge ; + and - ions across the inner and outer surfaces of the membrane Charge separation gives rise to an ______ across the membrane electrical potential difference Potential difference between electrical potentials is called the membrane potential (Em or Vm) When a cell is electrically at rest, it is called the res...

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10 pages

Written in 2023/2024

Grade A+

Terryl

CBNS 120 Midterm 1 Exam Prep 2026/2027 | Updated Practice Questions with Verified Answers

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13 pages

Written in 2026/2027

Grade A+

rosaline2

CBNS 120 Exam Prep 2026/2027 | Updated Practice Questions with Verified Answers

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16 pages

Written in 2026/2027

Grade A+

rosaline2

CBNS 120 2026/2027 Complete Study Guide | Exam Prep with Answer Explanation

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24 pages

Written in 2026/2027

Grade A+

rosaline2

CBNS 120 Midterm 1 Questions with Detailed Verified Answers

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15 pages

Written in 2025/2026

Grade A+

Ivie

Cbns 120 Midterm 1 Exam 2025/2026 Questions And Answers 100% Pass

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11 pages

Written in 2025/2026

Grade A+

Fyndlay

Cbns 120 Midterm 1 Questions With 100% Correct Answers!!

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11 pages

Written in 2025/2026

Grade A+

SparrowHead

CBNS 120 final exam questions & answers 2024/2025 Facilitation is a form of "short term synaptic plasticity" that leads to: - ANSWERSprogressive increase in EPP amplitude Why does facilitation occur? - ANSWERSResidual calcium in the nerve terminal What does synaptic depression result from? - ANSWERSDepletion of the readily releasable store of synaptic vesicles What does synaptic depression lead to? - ANSWERSReduction in EPP amplitude What is short term increase in EPP amplitud...

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5 pages

Written in 2024/2025

Grade A+

Bensuda

CBNS 120 Final Test Questions & Answers 2024/2025 Santiago Ramón y Cajal, 1885-90 (Neurons and Signalling) - ANSWERSPrinciple of Dynamic Polarization - Information flows in a predictable and consistent direction within a nerve cell. - Information flow begins at the receiving (input) sites on the dendrites and soma to the trigger zone at the axon hillock (initial segment). - At the axon hillock, the action potential is initiated and propagated unidirectionally along the axon to the p...

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27 pages

Written in 2024/2025

Grade A+

Bensuda

CBNS 120 EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED. A complete cycle of the Na/K ATPase requires: - -all of the above (Na binding, K binding, Phosphorylation, Dephosphorlation) ATPases (pumps) like the Na/K Pump transfer ions across the membrane at rates of - - 10^0-10^3 Blocking the Na/K pump could: - -All of the Above Decreasing [Na]o would affect the Na/Ca (NCX) exchanger as follows: - -Decrease transporter activity During a cycle of the Na/Ca (NCX) exchanger: - -A & C...

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2 pages

Written in 2023/2024

Grade A+

Terryl

CBNS 120 EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED. __________ synapses occur when current flows through _______ ___________. - -Electrical Gap junctions _____________ transmission occurs when a transmitter binds to a receptor and the protein undergoes a ____________ change. - -Chemical Conformational At the neuromuscular junction there is _____ quanta - -200 At automatic synapses there is ___ quanta - -20 The surface area of the cell _________ due to vesicle fusion - -Inc...

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12 pages

Written in 2023/2024

Grade A+

Terryl

CBNS 120 EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED. "Gating Current": Movement of S4 Helix "Voltage Sensor" - -movement of the S4 voltage sensors, leading to Na channel activation, results in gating current movement of gating charge as a swiveling cylinder ex. internal crevice (gate closed) --> external crevice (gate open) movement of gating charge as a "paddle" - movement of charge within the membrane creates a "gating current" Action Potential - -increasing the...

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11 pages

Written in 2023/2024

Grade A+

Terryl

CBNS 120 FULL PROBLEM SET QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED. The slow AHP (after-hyperpolarization lasting for tens of milleseconds to seconds) results from: - -Calcium Activated gK In the Hodgkin-Huxley squid axon experiments, the late outward current could be isolated by: - -B & C Only (treating the axon with TTX (tetrodotoxin) & Stepping the membrane potential to the Na equilibrium potential) At threshold for the action potential: - -The outward leak K current equals the i...

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19 pages

Written in 2023/2024

Grade A+

Terryl

CBNS 120 LECTURES 12-13 NOTES/ QUESTIONS AND ANSWERS. Acetylcholine action on endothelial cells activates the - -mnogr Activation of Gs leads to elevated levels of - - Cardioacceleration by norepinephrine involves synthesis of - -(order given) G protein inhibition of N-type Ca channels in sympathetic neurons involves direct binding of ______ to the channel: - -c GPCR activation leads to a multi-step signaling cascade. Whic

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2 pages

Written in 2023/2024

Grade A+

Terryl

CBNS 120 LECTURES 14 AND 15, REVIEW QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED. ______ is a smaller ________ in postsynaptic calcium concentration, accompanied by a ____________ in the number and sensitivity of post synaptic ____________ - -LTD Increase Reduction Receptors ______ is mediated by an ___________ in calcium concentration in the _______ _____________ cell - -LTP Increase Post synaptic _________ collaterals project into CA3, this is the circuit for _____________ - -Sch...

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10 pages

Written in 2023/2024

Grade A+

Terryl

CBNS 120 MIDTERM 1 EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+/ Cajal used the [_________] stain to prove the [___________] Doctrine. - -golgi; neuron Conductance is the reciprocal of: - -resistance Hyperpolarization occurs when the membrane potential becomes more [_____________], while depolarization causes the membrane potential to become more [_______________]. - -negative; positive Permeability indicates the presence of ______, while conductance requires _______ and ______. - -op...

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11 pages

Written in 2023/2024

Grade A+

Terryl

CBNS 120 MIDTERM 1 EXAM REVIEW. GRADED A+/ VERIFIED. conductance is inversely proportional to resistance hyperpolarization occurs when membrane potential becomes more negative depolarization occurs when the membrane potential becomes less negative what does permeability indicate? presence of open channels what does conductance require ions and charge carriers the membrane potential at which the diffusional force created by an ion gradient is equal and opposite to the electrical for...

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6 pages

Written in 2023/2024

Grade A+

Terryl

CBNS 120 MIDTERM 2 EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED. equation relating voltage, current and rin. - -Rin = V/I define the membrane time constant (τ). - -τ is the time required for a first order exponential process to decay to 1/e of its original value, or to increase to 1-1/e of its maximum value. How is membrane time constant (τ) related to membrane resistance and capacitance? - - τ = RC equation describing an exponential time course of decreasing membrane vo...

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5 pages

Written in 2023/2024

Grade A+

Terryl

CBNS 120 MIDTERM 2 REVIEW QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED. "M" potassium channels (check all that apply): - have a relatively high open probability at Em - are inhibited by PIP2 - mediate the late slow IPSP - mediate the late slow EPSP - cause an excitatory response through decreased resting conductance have a relatively high open probability at Em, mediate the late slow EPSP, cause an excitatory response throughterm-48 decreased resting conductance. The following cells ...

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16 pages

Written in 2023/2024

Grade A+

Terryl

CBNS 120 MIDTERM 2 REVIEW QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED. Activation of the GIRK channel makes the Vm - -Negative Astrocytes contribute to synapse formation via: - -- secretion of Hevin - secretion of thrombospondins (TSPs) Astrocytes: - --Respond to neurotransmitters -Release neurotransmitters -Regulate blood flow At hippocampal GABAergic synapses, autoinhibition is mediated by: - -GABAb receptors and the inhibition of presynaptic voltage-gated calcium channels At hippoca...

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8 pages

Written in 2023/2024

Grade A+

Terryl