Diffusion/Osmosis #2

Front

What is required for a cell to transport particles by active transport?

Back

Energy

Front

Osmosis is the movement of _____ across a membrane.

Back

water

Front

What does passive transport require?

Back

no energy

Front

What type of transport is characterized by the use of energy?

Back

active transport

Front

If there is 5 percent water inside a cell and 5 percent water outside a cell, what will happen?

Back

There will be equal movement of water into or out of the cell.

Front

Define diffusion.

Back

The movement of particles from an area of higher concentration to an area of lower concentration.

Front

What is the main difference between active transport and passive transport?

Back

Active transport requires energy, while passive transport does not.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space.

Front

What is the role of channels in cell membranes?

Back

They facilitate the transport of substances across the membrane.

Front

What is the process called when water moves through a selectively permeable membrane?

Back

Osmosis