Transcript A.P.day37, 12 prokaryotes vs eukaryotes

Prokaryotes in general
Archeabacteria
Archaea are similar to Eukaryotic
Cells
They both have several kinds of RNA
Polymerase.
The initiator to start photosynthesis is
Methionine in both.
Introns can be seen in both.
DNA associated Histones are present
Ribosomal protein is similar.
Cell wall does not have peptidoglycogen
like bacteria cell wall
Prokaryote continued
Bacteria
Virus attacking a cell: are they
alive?
Bacteria in the small intestine
Bacteria
No nuclear envelope
No membrane enclose organelles
Cell wall made of peptidoglycogen
One kind of RNA polymerase
No introns present
No histones associated with DNA
Circular Chromosomes
Bacteria Shapes
Cocci: Shaped like a sphere 
Bacillus: Shaped like a rod 
Spirillus: Shaped like a spiral 
Euglenophyta
Chlorophyta
Alveolates
Stramenopiles
Amoebozoans
Ways to Classify
Phylogeny: details the evolutionary
history of the taxon and details
relationships that exist
Cladistics: evolutionary branches
Phenetics: uses only measurable
similarities and differences
Classical Evolutionary Systematics:
uses all approaches
Darwin’s systematics uses his
idea: Descent with
modification not
survival of the fittest
Textbook Action
Please read pages 526-528 and 535537 on the classification of life…pay
particular attention to Table 27.2. Also
read pages 545-554 on protists and the
phylogeny of eukaryotes. Figures
help…
You may construct a concept map or
any other graphic organizer to help you.
This will be handed in tomorrow.
Continuity and Change Lab