Unti 1- Transport Across Cell Membranes Flashcards
1
Q
What is osmosis?
A
Osmosis is a special case of diffusion. It is the passive movement of water molecules down a concentration gradient from a region of high water concentration to a region of lower water concentration
2
Q
What is diffusion?
A
Diffusion is the passive movement of molecules down a concentration gradient from a region of high concentration to a region of lower concentration.
3
Q
What is active transport?
A
Active transport is the movement of ions from a region of low concentration to a region of higher concentration. Active transport requires energy
4
Q
What does turgid mean?
A
A swollen plant cell with a full vacuole
5
Q
What does plasmolysed mean?
A
A plant cell in which the vacuole has shrunk and the membrane has pulled away from the wall due to water loss
