Question:The phospholipid composition of cell membranes causes the membranes to be impermeable to water molecules. However, Ca2+ and Mg+ and Cl- ions diffuse in and out of the cell because: a) Water is soluble in fatty acids found in phospholipids b) the Fatty Acid portion of the phospholipid component interacts with water c) the fatty acids are hydrophilic d) protein molecules embedded in the membrane function as H20 channels through the membrane, e) water is nonpolar.
Question:The phospholipid composition of cell membranes causes the membranes to be impermeable to water molecules. However, Ca2+ and Mg+ and Cl- ions diffuse in and out of the cell because: a) Water is soluble in fatty acids found in phospholipids b) the Fatty Acid portion of the phospholipid component interacts with water c) the fatty acids are hydrophilic d) protein molecules embedded in the membrane function as H20 channels through the membrane, e) water is nonpolar.
Concepts of Biology
1st Edition
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:Samantha Fowler, Rebecca Roush, James Wise
Chapter3: Cell Structure And Function
Section: Chapter Questions
Problem 18CTQ: Why is it advantageous for the cell membrane to be fluid in nature?
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(For this question my professor says that answer choice b) or d)is not correct. The correct choice is answer c). I just need help for the explantion as to why it is choice c. )
Question:The phospholipid composition of cell membranes causes the membranes to be impermeable to water molecules. However, Ca2+ and Mg+ and Cl- ions diffuse in and out of the cell because: a) Water is soluble in fatty acids found in phospholipids b) the Fatty Acid portion of the phospholipid component interacts with water c) the fatty acids are hydrophilic d) protein molecules embedded in the membrane function as H20 channels through the membrane, e) water is nonpolar.
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