The Microbial World: Bacteria

A bacterium is...

• prokaryotic

• eukaryotic

Prokaryotes are identified by...

• being larger than 5 micrometers

• being from 1 to 5 micrometers

• shape, chemical nature of their cell wall, mode of movement, and how they obtain energy

• their nucleus

Bacteria have ______ main shapes.

• three

• two

• one

• ten

Rod shaped bacteria are called...

• spirilla

• cocci

• bacilli

• corkscrews

A spiral shaped bacteria that might resemble a corkscrew would be...

• a bacilli

• a cocci

• a spirilla

Which type of bacteria is pictured?

• spirilli

• bacillus

• coccus

• what's bacteria?

If you wanted to determine if a bacterium's cell wall was made of peptidoglycan or not, you'd use....

• a microscope

• a strep test

• gram staining

• the pH scale

A flagella is a whip-like structure that helps some bacteria...

• replicate

• slide on their secretions

• move

ALL bacteria make their own food by either using the sun or chemicals.

• True

• False

If conditions are right, bacteria can divide rapidly.

• True

• False