36 results found

Search Results for: ion channel

Ion channel

Definition noun, plural: ion channels A single protein or protein complex that traverses the lipid bilayer of cell membrane... Read More

Ion Channels of Excitable Membranes (3rd Edition)

Ion Channels of Excitable Membranes (3rd Edition)      ... Read More

Gated ion channel

Gated ion channel (Science: physiology) transmembrane proteins of excitable cells, that allow a flux of ions to pass only... Read More

Ligand gated ion channels

Ligand gated ion channel a transmembrane ion channel whose permeability is increased by the binding of a specific ligand,... Read More

Axon hillock

Axon Hillock Definition What is axon hillock? If you are familiar with the different parts of the neuron, the axon hillock... Read More

Generation of resting membrane potential

Stephen H. Wright Department of Physiology, College of Medicine, University of Arizona, Tucson, Arizona 85724... Read More

Sarcoplasmic reticulum

Definition noun plural: sarcoplasmic reticula (cell biology) The special type of smooth endoplasmic reticulum found in... Read More

Ionophore

Definition noun, plural: ionophores (1) Any molecule or compounds that is lipid-soluble yet allows ions to bind to, shield,... Read More

Transport

In biology, transport refers to the act or the means by which a molecule or ion is moved across the cell membrane or via the... Read More

Facilitated diffusion

Facilitated diffusion is the transport of substances across a biological membrane from an area of higher concentration to an... Read More

Channel forming ionophore

Definition noun An ionophore forming a channel from where ions can pass through a hydrophobic medium, such as the interior... Read More

Endomembrane system

Ever wondered how biomolecules are made within the cell and then they are released outside the cell for use by the body?... Read More

Graded potential

Definition noun, plural: graded potentials A change in the electrical potential on the membrane of an excitable cell (e.g. a... Read More

Uniport

Definition noun The transport of molecule or ion across a membrane through facilitated diffusion without coupling to the... Read More

Hydrogen-transporting ATP synthase

Definition noun A membrane enzyme that allows the diffusion of protons (hydrogen ions) through its proton channel component... Read More

Cyclic guanosine monophosphate

Definition noun plural: cyclic guanosine monophosphates (biochemistry) A cyclic form of guanosine monophosphate (chemical... Read More

Cyclic adenosine monophosphate

Definition noun plural: cyclic adenosine monophosphates (biochemistry) A cyclic form of adenosine monophosphate that... Read More

Polarization

Definition noun (general) The condition of polarity (biology) The process or act of producing positive and negative... Read More

Concentration gradient

Concentration gradient definition Concentration gradient refers to the gradual change in the concentration of solutes in a... Read More

Hydrogen

Hydrogen is one of the chemical elements found in nature. A chemical element refers to the pure substance of one type of... Read More

Plasma membrane

Do all cells have a plasma (or cell) membrane? Yes, all cells have a biological membrane that separates the protoplasm from... Read More

ATP synthase

Definition noun, plural: ATP synthases An enzyme that catalyzes the formation of ATP from the phosphorylation of ADP with... Read More

Ion carrier

Definition noun, plural: ion carriers An ionophore that facilitates transport of ion through a hydrophobic medium, such as... Read More

Amphipathic

Amphipathic is a word used to describe a chemical compound containing both polar (water-soluble) and nonpolar (not... Read More

Excitatory postsynaptic potential

Definition noun A type of postsynaptic potential where the binding of neurotransmitters with the postsynaptic receptors... Read More

Chemiosmosis

Chemiosmosis Definition What is chemiosmosis? In biology, chemiosmosis refers to the process of moving ions (e.g. protons)... Read More

Inhibitory postsynaptic potential

Inhibitory postsynaptic potential is a type of postsynaptic potential where the binding of neurotransmitters with the... Read More

Transmembrane protein

Definition noun, plural: transmembrane proteins A protein that spans the entire biological... Read More

Excitatory synapse

Definition noun (1) A synapse in which the nerve impulse in a presynaptic cell tend to increase the probability of the... Read More

Passive transport

Passive transport is a type of cellular transport in which substances such as ions and molecules move down their respective... Read More

Mitochondrion

Definition noun, plural: mitochondria A spherical or rod-shaped organelle with its own genome, and is responsible for the... Read More

Cell membrane

Definition noun plural: cell membranes ˈmembɹeɪn The cell’s outer membrane made up of a two layers of phospholipids... Read More

Gap junction

Definition noun, plural: gap junctions A type of cell junction characterized by the intercellular channel that is formed in... Read More