Viruses

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Slide 15

Eubacteria

Make up the larger of the two prokaryote kingdoms

Generally are surrounded by a cell wall composed of complex carbohydrates

Slide 16

Cyanobacteria

Photosynthetic bacterium

Bluish-greenish color

Contain membranes that carry out the process of photosynthesis

Do not contain the same type of chloroplasts as plants do

This bluish-greenish algae can be found nearly everywhere on earth.

Can survive in extremely hot environments and even extremely cold environment

Slide 17

Archaebacteria

Lack important carbohydrate found in cell walls

Have different lipids in their cell membrane

Different types of ribosomes

Very different gene sequences

Archaebacteria can live in extremely harsh environments

They do not require oxygen and can live in extremely salty environments as well as extremely hot environments.

Slide 18

Identifying Prokaryotes

Cell Shape

Cell Wall

Movement

Slide 19

Bacterium Shapes

Cocci~ Sphere shaped bacteria

Bacillus~ Rod shaped bacteria

Spirrillium ~ Spiral shaped bacteria

Flagella~ Leg-like structures that help to propel the bacterium.

Slide 20

Gram + and Gram – Bacterium Cell Walls

Slide 21

Cellular Walls

Chemical nature of a cell wall can be determined by Gram Staining

By finding out what color the cell produces when it is gram stained you can figure out the type of carbohydrates in the cell wall

Slide 22

Movement

Flagella ~ Tail like structure the whips around to propel the bacterium

Cillia ~ Miniature flagella surround the cell that help to “swim”

Non motile ~ Sticky cillia like structures that keep the bacterium from moving

Slide 23

Flagella

Slide 24

Slide 25

Bacteria and their energy

Autotrophs

Chemotrophs

Heterotrophs

Slide 26

Autotrophs