BACTERIA

Prokaryotic Cells No Nucleus No Organelles Small!

Dysentery

So what do Bacteria have?

Cell membrane DNA (a circular strand) Ribosomes Cell Wall

They may have… Flagella (for motion) Pilli (attach to a food source) Endospores (protection in harsh conditions)

Cell Wall

Determines what type of antibiotic will work 2 types

Gram negative Gram positive

Cell Wall Cell Wall

KingdomARCHAEBACTERIA4 - CHEMOTROPHS and THERMOPHILES

Live in Harsh Conditions.

Thought to be similar to first life forms on earth

Achaeoglobus -83 degress celsius

KingdomEUBACTERIA -”Normal” bacteria- Bacteria that we

encounter everyday 3 types (identified by shape)

COCCI, roundBACILLI, rodSPIRALLI - spiral

COCCI BACILLI SPIRALLI

Disease

E. Coli/Salmonella/botulismTuberculosis/Acne

Eat host (metabloize)

Produce Toxins

KingdomPROTISTA- Very Diverse!

EUKARYOTES & DIRECT MULTICELLULAR DESCENDANTS

ALGAE (photosynthesis) PROTOZOANS (eat and consume) SLIME/WATER MOLD (absorb

nutrients) Basically any living eukaryotic cell

that isn’t animal, plant or fungi

Eukaryotic- What they have

DNA in Nucleus Has Organelles Larger than Bacteria (usually)

PROTOZOANS

MODES OF TRANSPORT

Euglena- Flagella

Paramecium-Cilia

Amoeba- Pseudopodia

DISEASE

• Malaria• Complex Life Cycle

• Mosquitoes (Anopheles) to humans

• Malaria ruptures red blood cells

– Quinine kills malaria (Tonic water has it)

• Giardia• Beaver Fever!

• Diarrhea (mild to severe)

DISEASE

• Toxoplasmosis (Toxoplasma gondii)• Cat eats dead rat• Protozoa comes out of cat feces• Handling cat feces transfers it to humans (don’t

play with cat poop)• Fever, kills cells; not fatal

• Pregnant women can have fetuses that get brain damage

Protist are great!

1. Diatomaceous Earth- Natural Insect Killer

2. Sushi wrappings

3. Soup

4. Ice cream thickener

5. Kelp- I know you love kelp!

KingdomFungiHyphae

Made of long filaments:

one cell thick

MyceliumTangled mass of hyphae

DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY

Fungi Energy Source

Get nutrition from other organismsRelease digestive

enzymes that break down substances- then they absorb nutrients

JOHN WRIGHT / SCIENCE PHOTO LIBRARY

Friend or Foe

Help plants absorb nutrients (Mycorrhizae)

Mold

Antibiotics Athlete’s foot and Gangrene

Yeast (bread!) Poisonous

Food (Pizza!) Dry rot

What is a lichen?

Why is it important?

Read pages 508-510

Comparing

Parts Virus Bacteria Protist FungiNucleus?Living?DNA? Chloroplast? Any Multicellular?

Comparing

Parts Virus Bacteria ProtistFungi

Nucleus? No No YesYes

Living? No Yes Yes Yes

DNA? Y/N Yes Yes Yes

Chloroplast? No No Y/N No

Any Multicell? No No Y/N Y/N