Bacteria

Bacteria are...

• microscopic

• unicellular

• prokaryotic (no true nucleus)

• viruses

• organisms

Bacteria HAVE a nucleus and their organelles HAVE a membrane!

• TRUE

• FALSE

Archaebacteria live in extreme environments like...

• boiling waters

• salt

• acids

• animal intestines

• deserts

Eubacteria contain:

• decomposers

• intestines

• pathogens (disease-causing organisms)

• viruses

The major structures of bacteria are:

• capsule

• clump of genetic material

• cytoplasm

• ribosomes

• cell membrane and cell wall

Bacteria have a capsule on the outside.

This slimy covering helps protect bacteria, keeping it from drying out.

It also can help it attach to other organisms.

• TRUE

• FALSE

You ONLY become sick after being exposed to A LOT of bacteria because bacteria grow to full size and reproduce very slowly. 

• TRUE

• FALSE

Bacteria reproduce only under the right conditions:

• food must be plentiful

• the environment must be favorable

• there must be a host cell present

• a virus must be around

Many bacteria grow and are ready to reproduce after only 30 minutes! 

• TRUE

• FALSE

Need oxygen to live.

• Aerobic bacteria

• Anaerobic bacteria