• No results found

The Membrane Potential

Etiology of the membrane potential of rat white fat adipocytes

Etiology of the membrane potential of rat white fat adipocytes

... chloride; membrane potential THE PLASMA MEMBRANE POTENTIAL (Vm) is a fundamental biolog- ical property for the survival and function of virtually every eukarocytic ...action potential ...

15

Human Rhinovirus Type 2 Uncoating at the Plasma Membrane Is Not Affected by a pH Gradient but Is Affected by the Membrane Potential

Human Rhinovirus Type 2 Uncoating at the Plasma Membrane Is Not Affected by a pH Gradient but Is Affected by the Membrane Potential

... membrane. Given that the conformational modification per se is not affected by the low-pH buffer used, it can be assumed that manipulating the pH gradient or the membrane potential directly affects ...

10

Role of the Membrane Potential in Bacterial Resistance to

Role of the Membrane Potential in Bacterial Resistance to

... The electrical potential difference (A0) across the membrane of Escherichia coli was measured by the distribution of lipid-soluble cations and correlated with resistance to dihydrostrept[r] ...

6

1 Ionic basis of the membrane potential

1 Ionic basis of the membrane potential

... The solution to (4) is easy: V (t) = V m + (V (0) − V m )e − t/τ where V (0) is the initial voltage. We could apply a steady current to this membrane as well. Typically, currents are measured in terms of the area ...

25

Dynamic oscillations in the membrane potential of pancreatic islet cells

Dynamic oscillations in the membrane potential of pancreatic islet cells

... At this concentration of glucose each burst of electrical activity has a duration of at least 5 s (Matthews, Dean & Sakamoto, 1973; Meissner, 1976a; Beigelman et al. 1977) and is suc[r] ...

18

Membrane potential and cancer progression

Membrane potential and cancer progression

... channel, membrane potential, migration, proliferation, stem cell INTRODUCTION The presence of various ion channels and transporters at the plasma membrane provides different permeability to distinct ...

11

Lab 1: Simulation of Resting Membrane Potential and Action Potential

Lab 1: Simulation of Resting Membrane Potential and Action Potential

... Resting Membrane Potential and Action Potential Overview The aim of the present laboratory exercise is to simulate how changes in the ion concentration or ionic conductance can change the values of ...

9

Bistable membrane potential of the ciliate Coleps hirtus

Bistable membrane potential of the ciliate Coleps hirtus

... the membrane potential of the cell is best described as bistable or ...deep membrane potential During long-lasting recordings of several minutes, spontaneous shifts between shallow and deep ...

8

VARIATION IN MEMBRANE ELECTROCHEMICAL POTENTIAL OF PLASMODIUM INFECTED ERYTHROCYTES

VARIATION IN MEMBRANE ELECTROCHEMICAL POTENTIAL OF PLASMODIUM INFECTED ERYTHROCYTES

... = potential gradient in V/cm 10 ...electrochemical potential or ZP which indicates the mobility of particle under applied electric ...the membrane potential of biological ...

5

Membrane potential genesis in Nitella cells, mitochondria, and thylakoids

Membrane potential genesis in Nitella cells, mitochondria, and thylakoids

... the membrane potential is kept negative by a pair of redox half-cells of H 2 /H + formed at the inner and outer boundaries of the first electron- conducting ...the potential level of the outer ...

18

Adaptation in the Ventral Eye of Limulus is Functionally Independent of the Photochemical Cycle, Membrane Potential, and Membrane Resistance

Adaptation in the Ventral Eye of Limulus is Functionally Independent of the Photochemical Cycle, Membrane Potential, and Membrane Resistance

... However, if it is assumed that the instantaneous value of the membrane potential is controlling sensitivity during background illumination and dark adaptation, then t[r] ...

17

Some Observations on Potential Differences Across the Ectoplasm Membrane of Paramecium

Some Observations on Potential Differences Across the Ectoplasm Membrane of Paramecium

... As is clear from Table VIII, these ions, even at very low concentrations, modify the membrane potential due to NaCl and shift the value of the charge on the cell interior to the negative[r] ...

9

The interaction between metabolism and the plasma membrane potential, and intracellular pH

The interaction between metabolism and the plasma membrane potential, and intracellular pH

... resting potential and finally, ion channels in jurkat cell are presented in subsection ...the membrane potential To understand how the membrane potential is established, a hypothetical ...

252

Interactions of membrane potential and cations in regulation of ciliary activity in Paramecium

Interactions of membrane potential and cations in regulation of ciliary activity in Paramecium

... When the membrane potential was fixed, an increase in external Ca or Mg and, to a lesser extent, an increase in K concentration, raised the frequency of normal beating or decreased the f[r] ...

22

Membrane Potential Dynamics of Hippocampal Neurons During Ripples in Awake Mice

Membrane Potential Dynamics of Hippocampal Neurons During Ripples in Awake Mice

... hyperpolarized membrane potential and small sub- threshold fluctuations (A) The top panel shows a spectrogram of the average LFP power (z-score by frequency) triggered on transitions to SIA, which occur at ...

126

Light Dependence of Calcium and Membrane Potential Measured in Blowfly Photoreceptors In Vivo

Light Dependence of Calcium and Membrane Potential Measured in Blowfly Photoreceptors In Vivo

... From the Department of Neurobiophysics, University of Groningen, 9747 AG Groningen, The Netherlands a b s t r a c t Light adaptation in insect photoreceptors is caused by an increase in the cytosolic Ca 2 1 concentra- ...

12

Resting membrane potential ~ -70mV - Membrane is polarized

Resting membrane potential ~ -70mV - Membrane is polarized

... - When a greater stimulus strength is applied to a neuron identical AP’s are produced more frequently.... Action potential.[r] ...

33

Cells and Their Housekeeping Functions Cell Membrane & Membrane Potential

Cells and Their Housekeeping Functions Cell Membrane & Membrane Potential

... hydrophilic heads http://www.ocvts.org/instructors/htm/asprague/Biotech/Ch06CellMembraneDiffusion.ppt+cell+membrane+ppt&hl=zh- ...

35

Nira Potential as Membrane Preparation Materials

Nira Potential as Membrane Preparation Materials

... 1. Introduction Coconut nira is a water which is contained in coconut flower. Nira is obtained by tapping the coconut flower. Coconut nira contains high levels of sugar which are about 15.40% [1]. This fluid is the best ...

5

Membrane potential oscillations in molluscan “burster” neurones

Membrane potential oscillations in molluscan “burster” neurones

... Both are carried by potassium ions but one depends on an increase in intracellular calcium during the pulse, while the other appears to be simply dependent on the voltage across the cell[r] ...

20

Show all 10000 documents...

Related subjects