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Membrane potential (also transmembrane potential or membrane voltage) is the difference in electric potential between the interior and the exterior of a biological cell. It equals the interior potential minus the exterior potential. This is the energy (i.e. work) per charge which is required to move a (very small) positive charge at constant ...
Bioenergetics is a field in biochemistry and cell biology that concerns energy flow through living systems. [1] This is an active area of biological research that includes the study of the transformation of energy in living organisms and the study of thousands of different cellular processes such as cellular respiration and the many other metabolic and enzymatic processes that lead to ...
The adenylate energy charge is an index used to measure the energy status of biological cells . ATP or Mg-ATP is the principal molecule for storing and transferring energy in the cell : it is used for biosynthetic pathways, maintenance of transmembrane gradients, movement, cell division, etc... More than 90% of the ATP is produced by ...
Eventually, the lactase will digest all of the lactose, until there is none to bind to the repressor. The repressor will then bind to the operator, stopping the manufacture of lactase. In genetics, a promoter is a sequence of DNA to which proteins bind to initiate transcription of a single RNA transcript from the DNA downstream of the promoter.
Keep your mortgage documents and related home sale records for at least seven years after selling your home. This includes proof of mortgage payoff , the closing statement and receipts for capital ...
Charge-off. A charge-off or chargeoff is a declaration by a creditor (usually a credit card account) that an amount of debt is unlikely to be collected. This occurs when a consumer becomes severely delinquent on a debt. Traditionally, creditors make this declaration at the point of six months without payment. A charge-off is a form of write-off .
Phosphorylation. Serine in an amino acid chain, before and after phosphorylation. In biochemistry, phosphorylation is the attachment of a phosphate group to a molecule or an ion. [ 1] This process and its inverse, dephosphorylation, are common in biology. [ 2] Protein phosphorylation often activates (or deactivates) many enzymes. [ 3][ 4]
Infobox references. Interactive animation of the structure of ATP. Adenosine triphosphate ( ATP) is a nucleotide [ 2] that provides energy to drive and support many processes in living cells, such as muscle contraction, nerve impulse propagation, and chemical synthesis.