Cell Biology Basics

Front

What is the first principle of the Cell Theory?

Back

All organisms are made of cells.

Front

What is the second principle of the Cell Theory?

Back

All cells come from preexisting cells.

Front

What is the third principle of the Cell Theory?

Back

The cell is the most basic unit of life.

Front

What are organelles?

Back

Organelles are specialized structures within a cell that perform specific functions.

Front

What is cytoplasm?

Back

Cytoplasm is the jelly-like substance within a cell that contains organelles and is the site of most cellular activities.

Front

What are the characteristics of prokaryotic cells?

Back

Prokaryotic cells have no membranes, DNA is found in the cytoplasm, and all are microscopic single-celled organisms.

Front

What are the characteristics of eukaryotic cells?

Back

Eukaryotic cells have membrane-bound organelles in the cytoplasm, DNA found in the nucleus, and may be multi or single-celled organisms.

Front

What is the function of ribosomes?

Back

Ribosomes are tiny organelles that link amino acids together to form proteins.

Front

What are vesicles?

Back

Vesicles are small membrane-bound sacs that keep things from the cytoplasm and help deliver materials if needed.

Front

What is the function of the cell membrane?

Back

The cell membrane forms a boundary, allows for passage of materials into and out of the cell, and is formed by lipid molecules.