In ionic steady statecells maintain different internal and external concentrations of various ionic species [1]. The interior of the cell is rich in carboxylic acids and cells balance this negative charge by positively charged counterions. Cell membranes leak in sodium and other ions so they actively pump out sodium and calcium ions at the same rate. This is why intracellular sodium ion concentration is much lower than the extracellular concentration. This unequal distribution of ions represents a steady state that requires the continual expenditure of cellular energy. Ionic steady state is a form of homeostasis. Cells in culture, stained for keratin (red) and DNA (green) The cell is the structural and functional unit of all living organisms, sometimes called the building blocks of life. ... An ion is an elementary particle or system of elementary particles with a net electric charge. ... Structure of a carboxylic acid Carboxylic acids, also known as alkanoic acids, are organic acids characterized by the presence of a carboxyl group and have the general chemical formula R-C(=O)-OH, also written as R-COOH, where R is a hydrogen or an alkyl group. ... Homeostasis or homoeostasis is the property of an open system, especially living organisms, to regulate its internal environment so as to maintain a stable condition, by means of multiple dynamic equilibrium adjustments controlled by interrelated regulation mechanisms. ...
You thus see that there are two types of steadystate - one in which the toaster sits equilibrated with room temperature and nothing is happening, and another in which current is flowing through and heating the toaster but the temperature has reached equilibrium and is unchanging.
While the seed is almost in steadystate (some very, very low levels of metabolism continue), the spore just sits there unchanged from minute to minute and day to day waiting for the right conditions to come along to induce germination.
That is the realm of the dynamic steadystate in a cell culture.
Lingling Chen: Biochemistry studies of microbial communication, microbe-host interaction, and molecular chaperon-assisted protein folding.
Thomas Donahue: Our laboratory uses genetics, molecular biology, and biochemistry to study the mechanism of protein synthesis.
Jeffrey Zaleski: Studies involving the use of various steadystate and time-resolved spectroscopic methods including optical absorption, Raman, and circular dichroism to investigate the structure and kinetics of biologically relevant intermediates involved in enzyme and drug-related reaction mechanisms.
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