Multiple Choice
Carrier proteins that transport molecules via facilitated diffusion require energy from ATP.
615
views
9. Transport Across Membranes
Passive Transport: Diffusion and Osmosis
Struggling with Cell Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In a cell-biology context, which statement correctly describes how water moves via osmosis across a selectively permeable membrane?
A
Water moves from a region of higher solute concentration to a region of lower solute concentration.
B
Water moves from a region of lower solute concentration (higher free water concentration) to a region of higher solute concentration (lower free water concentration).
C
Water moves only through ion channels and cannot cross membranes via aquaporins.
D
Water movement by osmosis requires ATP hydrolysis to pump water across the membrane.
Related Videos
Related Practice
Passive Transport: Diffusion and Osmosis practice set
Problem sets built by lead tutorsExpert video explanations