Question 6Points: 10 out of 10Which of the following can cross the cell’s plasma membrane without the assistance of protein transporters? Select all that apply.small hydrophobic moleculeslarge polar moleculesB,A
gassespositively charged ionsFeedbackCorrect. Gases are small enough to cross the membrane without assistance.The inner portion of the membrane is hydrophobic, so hydrophobic molecules also can cross on their own provided they are small enough.Question 7Points: 10 out of 10A set of erythrocytes is placed in a beaker of 0.9% NaCl. Nothing appears tohappen to the cells. Why?
Question 8Points: 10 out of 10Which substance would be most likely to pass through a lipid bilayer/plasmamembrane without embedded proteins?Close