Transport across a membrane occurs by one of two opposite means, actively or passively. Active transport requires the cell to utilise cellular energy in the form of ATP, in order to employ protein pumps or engage in the activity of endo / exocytosis. Passive transport therefore occurs with no energy expenditure by the cell, where molecules exit or enter the cell using kinetic energy, or […]
1.0 Summary Angina pectoris is the chest discomfort which occurs when the heart muscle could not received sufficient oxygenated blood. It is due to atherosclerosis which is the buildup of the plaque at the coronary arteries that reduce the flow of blood to the heart. Also, angina can leads a patient to heart disease such as coronary artery disease (CAD) or myocardial infection (MI). There […]
Introduccion La creatividad es la llave que abre la puerta del desarrollo individual y colectivo, razón por la cual las naciones que han alcanzado un alto grado de desarrollo tecnológico, industrial, económico y social invierten grandes cantidades de recursos para mantenerse a la vanguardia, ya que innovar constantemente les asegura, no sólo el bienestar de sus habitantes, sino incluso la supervivencia misma. Esta necesidad de […]
Qualitative aspect of drug action – Schild plot Schild plot: Schild plot is defined as pharmacological method of receptor classification. By using schild plot dose-effect curve for an agonist is determined in the presence of various concentrations of a competitive antagonist for its receptor in the presence of agonist i.e. equilibrium dissociation constant is calculated. The experiment is carried out for series of dose ratios […]
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