Plasma membrane is freely permeable to –
Correct Answer: Alcohol
Description: Ans. is 'd' i.e., Alcoholo As the major middle portion of membrane (core of the membrane) is formed by hydrophobic region of phospholipids, this portion is impermeable to the usual water-soluble substances, such as ions, glucose and urea.o Conversely, fat-soluble substances, such as oxygen, carbon dioxide, and alcohol, can penetrate this portion of the membrane with ease.o Permeability coefficient and permeability of some important molecules in increasing order of frequency are Na+ < K+ < Cl- < Glucose < Tryptophan < Urea = Glycerol< Indole < H2O.
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