Comparing Viruses, Protists, Bacteria, and Fungi

Mr. JohnstonSaigon South International School

Viruses: Non-living, attach themselves to a host cell’s outer proteins to reproduceEBOLA AIDS

Which is a more effective virus?

Bacteria:

Reproduction

Food intake Prokaryotes

Shapes

Needs….

Sexually or asexually ( Binary Fission or conjugation)

Heterotrophs or autotrophs

No nucleus, but may have a flagellum

Rods, cones, spirals Oxygen to break

down their food. This is called “Cellular Respiration”

Some common bacteria shapes:

What are bacteria good for?

Oxygen and food production (try samples)

Health maintainence and health production

Environmental Cleanup and recycling Did you know?-Most bacteria are

helpful in fighting off bad bacteria, or do not harm you at all!

Protista

Cell structure Food intake

Mobility

Four groups:

Eukaryotes Heterotrophs and

autotrophs Some can move,

others can’t.

Protozoans with pseudopods, protozoans with flagella, protozoans with cilia, protozoans that are parasites

Types of Protozoans

Fungi

Food intake Function in

ecosystem Reproduces

Heterotrophs Decomposer Spores

Parts of Fungi (Mushrooms) Hyphae Stalk Head Underground

Hypae

Group investigation

Observe the samples in your petri dish. Are they bacteria, protists, or fungi? What is your evidence? Can you make out any parts that distinguish them from one another?