The sodium- potassium pump is an example of:
Correct Answer: Active transpo
Description: A i.e. Active transpo Calcium Metabolism in mammalian cells * Concentration of intracellular Ca2+ is 100 nmol/ L and it is about 12000 times less than that in extracellular fluid.Q * Ca2+ is stored in endoplasmic reticulum and mitochondria & can be released from them to replenish cytoplasmic Ca2+ * Calcium binding proteins bind cytoplasmic Ca2+ and when activated in this fashion, bring about a variety of physiological effect. * Ca2+ enter cell - Voltage gated Ca2+ channels - Ligand gated Ca2+ channels (T & L types) - Store operated Ca2+ channels (SOCCs) * It is transpo out of cell by (Active transpo)Q (i) Ca2+ IP ATPase antipoQ: cause 21-1+ inside & Ca2+ outside() of membrane at the cost of hydrolysis of ATP. (ii) Na+ Ca2+ antipoQ : It is a counter transpo causes 3 Na+ inside & 2Ca2+ outsideQ of membrane. * Calmodulin is Ca2+ binding protein involved in contraction of smooth muscle. * Passive transpo : when molecules traverse membrane by electro mechanical gradient (Passively) * Unipo : Form of transpo where only one substance is transpoed. * Sympo: Here binding of more than one substance to transpo protein & substances are transpoed across the membrane together. * Antipo: The transpo exchange one substance for another
Category:
Physiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now