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charge separation is when the charge from an object is repelled by another obeject and the charge from that object is separated throughout the whole entire object.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoGenerally, the inside of the cell is negative and the outside is positive. This is due to the selective permeability of the membrane.
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What is the small change in the charge across a neuron's membrane called?
Action Potential
How does the membrane generate voltage to create a membrane potential?
All cells have voltages across their plasma membranes. Voltage is electrical potential energy, which is a separation of opposite charges. The Cytoplasm of a cell is negative compared to extracellular fluid because of an unequal distribution of anions and cations which are on opposite sides of the membrane. The voltage created by that is is called the Membrane Potential. Which usually ranges from about -50 to -200 millivolts. The inside of the cell is negative compared to the outside, the why the they have the minus signs.
Why do bacterial cell walls carry a negative charge?
The Gram positive bacterial cell wall is made up of thick peptidoglycan layer which is rich in Teichoic acids. These teichoic acids are negatively charged because of presence of phosphate in their structure. The Gram negative bacteria have an outer membrane composed of phospholipids and Lipopolysaccharides. The lipopolysaccharides impart a strongly negative charge to surface of Gram negative bacterial cells.
Why is the sodium-potassium pump called an electrogenic pump?
pumps unequal quantities of Na+ and K+ across the membrane, 3Na+ out of and 2 K+ into the cell per pump cycle. In other words, it generates electricity by producing a net movement of positive charge out of a cell.
Opening sodium channels in the in the axon membrane causes?
Depolarization of the cell membrane. When the sodium channels open there is a rush of sodium ions down their concentration gradient into the cell. As they carry positive charge they reduce the potential difference (inside negative) across the membrane of the neuron.
What is a membrane potential?
a voltage or electrical charge across the plasma membrane
What is true of ions and their transport across cell membranes?
electrical or chemical signals may control the movement of ions across cell membrane
Why is the difference in charge across the inner mitochondrial membrane important?
to produce ATP
Which is the correct term for the movement of an electrical charge across a membrane?
Potential difference.
What is the small change in the charge across a neuron's membrane called?
Action Potential
What effect does the opening of the potassium channels have on the charge difference across the neuron's membrane?
repolarization
What is the difference in electrical charge across the cell membrane of a resting neuron is called?
This is the definition of "resting potential".
What is a difference in electric charge called?
The chemical gradient refers to the imbalance of substances across the membrane. The Electrical Gradient refers to the difference of charges between substances on different sides of the Membrane. The Electrochemical Gradient refers to the combination of the previous two gradients. The short answer is MEMBRANE POTENTIAL.
What conducts local currents towards the soma?
Dendrites receive stimuli from other neurons. Charge is carried by ions. The direction of the charge flows in is determined by the electrochemical potential difference across the membrane and the properties of membrane ion channels.
How does the cell use the charge differences that build up across the inner mitochondrial membrane during cellular respiration?
The inner mitochondrial membrane contains enzymes known as ATP synthases.
How does the membrane generate voltage to create a membrane potential?
All cells have voltages across their plasma membranes. Voltage is electrical potential energy, which is a separation of opposite charges. The Cytoplasm of a cell is negative compared to extracellular fluid because of an unequal distribution of anions and cations which are on opposite sides of the membrane. The voltage created by that is is called the Membrane Potential. Which usually ranges from about -50 to -200 millivolts. The inside of the cell is negative compared to the outside, the why the they have the minus signs.
Why do bacterial cell walls carry a negative charge?
The Gram positive bacterial cell wall is made up of thick peptidoglycan layer which is rich in Teichoic acids. These teichoic acids are negatively charged because of presence of phosphate in their structure. The Gram negative bacteria have an outer membrane composed of phospholipids and Lipopolysaccharides. The lipopolysaccharides impart a strongly negative charge to surface of Gram negative bacterial cells.
