Which of these molecules require a carrier protein to pass through the cell membrane?(a) Small neutral solutes(b) Water(c) Polar molecules(d) Non – polar moleculesThis question was addressed to me in a job interview.Question is from Eukaryotic Cells and it’s Organelles in chapter Cell : The Unit of Life of Biology – Class 11

Which of these molecules require a carrier protein to pass through the

1.	Which of these molecules require a carrier protein to pass through the cell membrane?(a) Small neutral solutes(b) Water(c) Polar molecules(d) Non – polar moleculesThis question was addressed to me in a job interview.Question is from Eukaryotic Cells and it’s Organelles in chapter Cell : The Unit of Life of Biology – Class 11
Answer» Right answer is (c) Polar molecules Explanation: Since the CELL MEMBRANE is a phospholipid bilayer having NON – polar lipid tail groups, polar molecules cannot PASS through the membrane without the assistance of carrier proteins present within the membrane.

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