Which two structures are found in plant cells?
A cell wall and a large central vacuole.
What happens to a plant cell’s protoplast during plasmolysis?
It shrinks and moves away from the cell wall.
What do aquaporins allow to diffuse massively?
Water.
What can diffuse very quickly through hydrophilic passages?
Water molecules and some ions.
What does cotransport couple through a transport protein?
One solute’s downhill diffusion to another substance’s uphill transport.
How do plants load photosynthetic sucrose into leaf-vein cells?
By H⁺/sucrose cotransport.
What distributes sucrose from leaf veins to different plant parts?
Vascular bundles.
In facilitated diffusion, how do carrier proteins move substances relative to their concentration gradient?
Down their concentration gradient.
Answer 8 questions on Plant Cell Osmosis and Transport.
1. What happens to a plant cell placed in a hypertonic solution?
2. As water enters a plant cell in a hypotonic solution, what does turgor pressure describe?
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