Unit 1 exam review

Front

What is the role of the cell membrane in a cell?

Back

It acts as a barrier that regulates the movement of substances into and out of the cell.

Front

What does the theory of endosymbiosis suggest about eukaryotic and prokaryotic cells?

Back

Eukaryotic cells evolved when one prokaryotic cell lived inside another and they worked together.

Front

What are the characteristics of eukaryotic cells?

Back

Eukaryotic cells have a nucleus, membrane-bound organelles, and linear DNA.

Front

What are the characteristics of prokaryotic cells?

Back

Prokaryotic cells lack a nucleus, have circular DNA, and do not have membrane-bound organelles.

Front

How do viruses reproduce after entering a host cell?

Back

Viruses use the host cell’s machinery to reproduce.

Front

True or False: Eukaryotes have a nucleus.

Back

True.

Front

What is the size difference between eukaryotic and prokaryotic cells?

Back

Eukaryotic cells are generally greater than 12 micrometers, while prokaryotic cells are less than 4 micrometers.

Front

What is the function of the cell membrane?

Back

The cell membrane regulates the movement of substances in and out of the cell.

Front

What is the significance of the endosymbiotic theory?

Back

It explains the origin of eukaryotic cells from prokaryotic cells.

Front

What is a key difference between eukaryotic and prokaryotic DNA?

Back

Eukaryotic DNA is linear, while prokaryotic DNA is circular.