Passive Transport Lecture Review

These flashcards cover key concepts about passive transport, diffusion, osmosis, and the behavior of cells in different solutions.

What is passive transport?

The movement of substances across a cell membrane without the need for energy input.

What are the two main types of diffusion?

Simple diffusion and facilitated diffusion.

What is osmosis?

The diffusion of water through a selectively permeable membrane.

What is a hypertonic solution?

A solution where the concentration of solutes is higher outside of the cell.

What happens to a cell in a hypotonic solution?

Water moves into the cell, causing it to swell.

What role do transport proteins play in facilitated diffusion?

They speed the passive movement of molecules across the plasma membrane.

What is the main driving force behind diffusion?

The movement from an area of high concentration to an area of low concentration.

What are the three types of solutions based on solute concentration relative to the cell?

Hypertonic, hypotonic, and isotonic solutions.

What is the effect of temperature on the rate of diffusion?

Higher temperature increases the rate of diffusion.

What type of molecules can facilitate osmosis?

Water and solute molecules like ions and sugars.