Chapter 8: Cells - Structure and Function

Front

What is the process called when cells transport materials against a concentration gradient?

Back

Active transport

Front

What does selectively permeable mean in the context of cell membranes?

Back

Some substances can cross the membrane while others cannot.

Front

Which of the following is NOT a main point of the cell theory?

Back

Cells can spontaneously generate.

Front

What is the basic unit of all forms of life?

Back

Cell

Front

What is a lipid bilayer?

Back

A flexible double-layered sheet that forms the cell membrane.

Front

What is the function of the cell membrane?

Back

To protect the cell and regulate what enters and leaves.

Front

What are organelles?

Back

Specialized structures within a cell that perform specific functions.

Front

What is the role of mitochondria in a cell?

Back

To produce energy through cellular respiration.

Front

What is the function of ribosomes?

Back

To synthesize proteins.

Front

What is diffusion?

Back

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