ch 7 the whole shaboom.

Front

What allows the plasma membranes of winter wheat to remain fluid in extremely cold temperatures?

Back

Replacing saturated fatty acids with unsaturated fatty acids.

Front

What is a true statement about cholesterol molecules in membranes?

Back

They alter the fluidity of the membrane.

Front

Why do membrane proteins become uniformly distributed when a mouse cell and a human cell are fused?

Back

Many proteins can move around within the bilayer.

Front

Where are the hydrophilic regions of a membrane protein most likely found?

Back

Exposed on the surface of the membrane.

Front

What is the driving force for facilitated diffusion?

Back

Concentration gradient.

Front

Define facilitated diffusion.

Back

A process of passive transport that allows substances to cross membranes with the assistance of special proteins.

Front

What role does cholesterol play in the plasma membrane?

Back

Cholesterol helps to maintain membrane fluidity and stability.

Front

What are the two main types of membrane proteins?

Back

Integral proteins and peripheral proteins.

Front

What is the function of integral membrane proteins?

Back

They span the membrane and can transport substances across it.

Front

What is the significance of the fluid mosaic model?

Back

It describes the structure of cell membranes as a mosaic of various components that move freely.