Multiple Choice
In passive transport, how does increasing a cell's surface area (while keeping the concentration gradient and diffusion distance constant) affect the rate of diffusion across its membrane?
1
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 the context of passive transport, how is osmosis different from simple diffusion?
A
Osmosis moves solutes from low to high concentration using ATP, whereas simple diffusion moves water from high to low concentration without ATP.
B
Osmosis is the movement of any molecule down its concentration gradient, whereas simple diffusion is specifically the movement of water across a membrane.
C
Osmosis occurs only through transport proteins, whereas simple diffusion always requires vesicle-mediated transport (endocytosis).
D
Osmosis is the diffusion of water across a selectively permeable membrane, whereas simple diffusion is the net movement of solute molecules down their concentration gradient without requiring a membrane.
Related Videos
Related Practice
Passive Transport: Diffusion and Osmosis practice set
Problem sets built by lead tutorsExpert video explanations