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How substances move across the cell membrane?
In facilitated diffusion, substances move into or out of cells down their concentration gradient through protein channels in the cell membrane. Simple diffusion and facilitated diffusion are similar in that both involve movement down the concentration gradient.
Which statements below best describe transport of substances across a plasma membrane?
Which statements below best describe transport of substances across a plasma membrane? Larger hydrophobic molecules move through the lipid bilayer easily.
Which statement best describes the effect on water transport across the cell membrane?
Which statement best describes the effect on water transport across the cell membrane if the aquaporin in the figure ceases to function? Water molecules will still be able to move across the cell membrane but at a slower rate.
What is most likely to move through the cell membrane by facilitated diffusion?
Which of the following is most likely to move through the cell membrane by facilitated diffusion? Na+ Ions move easily through water, which is polar, but cannot pass directly through the lipid (nonpolar) part of the cell membrane.