Unit 3 Prime Time Day 9

Front

What is the process called when particles move from high to low concentration?

Back

Passive Transport

Front

What does it mean for a cell membrane to be selectively permeable?

Back

Certain things can enter while others cannot.

Front

What is the structure of the cell membrane that consists of two layers of phospholipids?

Back

Phospholipid Bilayer

Front

In which direction do particles tend to diffuse?

Back

Downward, into the cytoplasm.

Front

What is the primary function of passive transport?

Back

To allow substances to cross membranes without the use of energy.

Front

What are the two main types of transport across cell membranes?

Back

Passive transport and active transport.

Front

What is an example of a substance that moves through passive transport?

Back

Oxygen or carbon dioxide.

Front

What is the difference between passive transport and active transport?

Back

Passive transport does not require energy, while active transport requires energy.

Front

What role do proteins play in the cell membrane?

Back

They assist in the transport of substances across the membrane.

Front

What is diffusion?

Back

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