THE 3 DOMAINS OF LIFE

BACTERIA

• Their membranes are made of unbranched fatty acid chains attached to glycerol by ester linkages
• Is a prokaryotic cell

ARCHAEA

• Characterized by membrane lipids that are branched hydrocarbon chains attached to glycerol by ether linkages
• Is a prokaryotic cell
• Has the ability to withstand harsh conditions due to the ether linkage

EUKARYA

• The only one of the 3 domains that is a eukaryotic cell
• Eukarya has 4 different kingdoms, fungi, protists, plants, and animals
• Some eukaryota cells don't have walls and those that do don't have peptidoglycan which is large molecules containing sugar

CELLS

• You can find a cell in just about every single living thing
• Whether it's an animal, plant, or human

EARTH

• Earth is over 4 billion years old
• Scientists believe life started on earth about 3.8 billion years ago
• Scientists believe protein molecules came together to form a primitive cell

PROKARYOTES

• The first prokaryotes emerged about 3.8 billion years ago
• The first prokaryotes cell came from a bunch of molecules got affected by a discharge, water, and sun
• Instead of eating scientists believe that the cells just duplicated itself through the RNA sequence

EVOLVING HYPOTHESIS

• Prokaryotes evolved through joining together in a symbiotic union
• This made both cells benefit and produce more cells like it creating a new "breed of cells"

ENDOSYMBOSIS

• Endosymbiotic hypothesis was revolved around whether or not mitochondria and chloroplasts have their own DNA and if this DNA is similar to bacterial DNA, which was later proven true.

SOURCES

• http://www.iflscience.com/environment/how-did-life-earth-start/
• http://www.ncbi.nlm.nih.gov/books/NBK9841/
• http://endosymbiotichypothesis.wordpress.com/evidence-for-the-endosymbiotic...