Warm Up 1. What has been your favorite thing about

6 grade so far? 2. How do you think you did on the test? 3. What are the 7 levels of classification?

KingdomsHow are viruses different from

bacteria?

What are the 6 Kingdoms?ArchaebacteriaEubacteriaProtistsFungiPlantsAnimals

Bacteria Micro- small (microscope- to look at small

things) Bacteria used to be classified into one

kingdom called Monerans. Now it’s split into two kingdoms:

Archaebacteria and Eubacteria

Bacteria are prokaryotesPro – beforeKaryon – nucleusThe simplest forms of life are

prokaryotes.Earth’s first cells were

prokaryotes.

Eubacteria They are the common bacteria that

causes the diseases we are familiar with.

Archaebacteria These are the oldest bacteria. They are found in extreme conditions like

hot springs and thermal vents in the ocean under conditions with no oxygen or highly acid environments.

ShapeRod: bacillusSpheres: coccusSpirals: spirillum

Bacteria reproduce rapidly.

VirusesDead or alive?

Viral structure Viruses are not cells. Basic structure:

Protein coat Nucleic acid core (RNA or DNA) Lipoprotein coat

(second coat – only in enveloped viruses)

Is A Virus Alive? This may look like a

space capsule, but it's

actually a virus. The top part is the

capsid, the body is the sheath, and the tails at the bottom help the virus attach to its host

Is A Virus Alive? Viruses are right on the border between

living and nonliving. Viruses must have a host cell to live and

reproduce. Outside of the host cell, viruses are pieces

of genetic molecules that can do nothing by themselves.

Video http://www.youtube.com/watch?v=Rpj0emE

GShQ http://www.youtube.com/watch?v=JnlULOj

UhSQ

Warm Up 1. What is eubacteria? 2. What is archaebacteria? 3. What is a virus? 4. What are the shapes of bacteria? 5. What are all of the kingdoms?

Virus Stages

1. Virus attaches

2. Virus injects DNA Hostile takeover of cell

3. Cell forced to make virus parts.

4. Virus splits the cell

5. So many = blows the cell apart

Let’s Compare!

Viruses Bacteria

Not A Kingdom 2 Kingdoms

Not Alive Alive!

Smaller than a cell IS a cell

Let’s Compare!

Viruses Bacteria

Cannot Reproduce on own

Can reproduce on its own

NOT Microorganism Microorganism

Can Cause Disease Can Cause Disease

Let’s Compare!

Viruses Bacteria

Benefits:

noneBenefits:

Decomposition

Digestion

Warm UP 1. What are the stages of virus

reproduction? 2. What are the 6 characteristics of life? 3. What is eubacteria? What is

archaebacteria? Where are they found? 4. Go get your potatoes and wait for

instructions.

Some Bacteria live symbiotically in the guts of animals or elsewhere in their bodies.

For example, bacteria in your gut produce vitamin K which is essential to blood clot formation.

Bacteria put the tang in yogurt and the sour in sourdough bread.

Saprobes help to break down dead organic matter.

Bacteria make up the base of the food web in many environments.

Streptococcus thermophilus in yogurt