Luokat: Kaikki - membranes - ancestor - eukarya - organelles

jonka Avery Giffen 3 vuotta sitten

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Universal Ancestor -DNA as genetic storage -ester bonds in cell membranes

The origin of life can be traced back to a universal ancestor, characterized by the use of DNA as genetic storage and the presence of ester bonds in cell membranes. This ancient lineage diverged into Bacteria, identifiable by peptidoglycan in their cell walls, and further into Archaea and Eukarya.

Universal Ancestor
-DNA as genetic storage
-ester bonds in cell membranes

Universal Ancestor -DNA as genetic storage -ester bonds in cell membranes

common ancestor of Archaea and Eukarya -histones present

Eukarya -presence of membrane-bound nucleus -presence of membrane-bound organelles
Unikonta

Opisthokanta -single posterior flagellum on swimming cells

Fly Agaric (Amanita muscaria)

Black Bread Mold (Rhizopus stolonifer)

American Black Bear (Ursus americanus)

Floating topic

SAR Clade

Rhizaria -filose pseudopodia

Foraminiferas

Radiolarians

Common Ancestor of Stramenopila and Alveolata -secondary plastids

Alveolata -membranous vesicles on cell membrane

Dinoflagellate

Stramenopila -tripartite flagellar hair

Diatoms

Giant Kelp (Macrocystis pyrifera)

Excavata -feeding groove -secondary plastid

Euglenoids

Archaeplastida -primary plastid

Common Ancestor of Chlorophytes, Charophytes, and Land Plants

Southern Magnolia (Magnolia grandiflora)

Chlorophytes

Rhodophytes

Archaea -ether bonds in cell membranes
Methanobrevibacter smithii

Bacteria -presence of peptidoglycan in cell wall

Escherichia coli