Based on the timeline we copied down describe the kind of life that would be found on a planet that is: .75 billion years old – unicellular/multicellular complex/simple? 1.5 billion years old - unicellular/multicellular complex/simple? 2.75 billion years old- unicellular/multicellular complex/simple? 4.2 billion years old- unicellular/multicellular complex/simple?

Eukaryotes vs Prokaryotes Animal Cell Plant Cell Animals Plants Fungi Protist Only Bacteria Bacteria Cell

WHYYYYY would both prokaryotes and eukaryotes need these things?! DNA: Instructions to create all molecules/traits needed for life Ribosomes: Build proteins Cell membrane: surrounds and protects the entire cell, controls what molecules enter and leave the cell.

DNA instructions RIBOSOMES proteins workers CELL MEMBRANE homeostasis BACTERIA!! Animal and Plant cells NO nucleus around DNA HAVE nucleus around DNA HAVE membrane-bound organelles NO membrane-bound organelles Plant cell Complex Simple Small Large