Chapter 21

Front

True or False: All bacteria cause disease.

Back

False

Front

Animal-like protists are commonly called what?

Back

Protozoans

Front

What shape of bacteria is shown in the picture?

Back

Bacilli

Front

What is the main function of the projections on the surface of a virus?

Back

They help the virus invade its host by attaching to specific sites on the host.

Front

Which structures allow sacrodines, such as amoebas, to move?

Back

Pseudopods

Front

What are the three main shapes of bacteria?

Back

Bacilli, Cocci, Spirilla

Front

What is the role of cilia in protists?

Back

Cilia help in movement and feeding.

Front

Define a virus.

Back

A virus is a microscopic infectious agent that can only replicate inside the living cells of an organism.

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have a nucleus and organelles.

Front

What is the function of flagella in protists?

Back

Flagella are used for movement.