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Biology

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PRESENTATION OUTLINE

THE 3 DOMAINS OF LIFE

BY RYAN KRUSE

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
Photo by FlyingSinger

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.

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