Multiple Choice
In passive transport, what primarily determines the direction of diffusion of a solute across a membrane that is permeable to that solute?
10
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
Which statement best describes a passive transport process across a cell membrane?
A
Movement of a substance against its concentration gradient using ATP-powered pumps
B
Movement of a substance down its concentration gradient without direct input of cellular energy (ATP)
C
Movement of large polar molecules through the lipid bilayer without transport proteins
D
Bulk movement of extracellular fluid and dissolved solutes into the cell via membrane vesicles
Related Videos
Related Practice
Passive Transport: Diffusion and Osmosis practice set
Problem sets built by lead tutorsExpert video explanations