Transport

Question 1

What is the definition of diffusion

Answer 1

The movement of particles from a high concentration to a low concentration down a concentration gradient until equilibrium is reached

Question 2

What is the definition of osmosis

Answer 2

The movement of water across a selectively permeable membrane, down a water concentration gradient from high to low concentration until water concentration equilibrium is reached.

Question 3

Define active transport

Answer 3

The movement of molecules from low to high concentration against the gradient using energy from the cell, as they are moved by the carrier proteins as they cross over a partially permeable membrane

Question 4

Where would one find active transport happening

Answer 4

In villi cells as they build up glucose reserves, in root hair cells as they take on extra nitrates and mineral ions