Which of the following best describes the relationship between membrane fluidity and the rate of diffusion of small nonpolar molecules across the plasma membrane?
Question 2
A cell is placed in a solution where the extracellular sodium ion concentration is significantly higher than the intracellular sodium ion concentration. Which of the following best explains why sodium ions do not diffuse freely across the plasma membrane?
Question 3
Which of the following best describes the mechanism by which glucose is transported into a cell via the sodium-glucose symporter (SGLT)?
Question 4
Which of the following best explains why potassium ions (K$^+$) require specific channels or transporters to cross the plasma membrane, even though they are smaller than many nonpolar molecules?
Question 5
Which of the following best describes the effect of increasing the concentration of extracellular glucose on the rate of glucose transport into a cell via facilitated diffusion (through a GLUT transporter), assuming all other conditions remain constant?
Membrane Transport Quiz — AS-Level Biology | A-Warded
