History of Life 1
Idea that life can come from nonliving matter
What is SPONTANEOUS GENERATION?
Scientists who recreated Earth's ancient atmosphere to test Oparin's hypothesis
Who is MILLER & UREY?
Structures that have the same structure but different function
Bird wing and bee wing
What are ANALOGOUS STRUCTURES?
Bat wing and human arm
What are HOMOLOGOUS STRUCTURES?
Most ancient bacteria; live in harsh conditions
What are ARCHAEBACTERIA?
First cells on Earth; lack a nucleus and membrane-bound organelles
What is PROKARYOTE?
Structures that have SAME FUNCTION but different structures
What are ANALOGOUS STRUCTURES?
Timeline of life on Earth; shows common ancestry
What is FOSSIL RECORD?
Fossils of stone replica
What is PETRIFIED?
Hypothesis Earth's ancient gases with ligtening made first cells (protocells)
Process that gives us oxygen on Earth
What is PHOTOSYNTHESIS?
Structures that have no purpose now
What are VESTIGAL STRUCTURES?
In relative dating of fossils, the layer which is the oldest
What is BOTTOM LAYER?
Fossils from empty space of organism
What is MOLD?
Bacteria that gave us oxygen on Earth
What is CYANOBACTERIA?
Cells that contain a nucleus
What is EUKARYOTE?
Looking at early development to show common ancestry?
What is COMPARATIVE EMBRYOLOGY?
Fossils from 3-D form of organism
What is CAST?
Theory of how eukaryotic cells were formed by prokaryotes engulfing other prokaryotic cells (organelles formed)
The hypothetical set of conditions present on ancient Earth (4.6 billion years ago); chemicals in early oceans that became part of origins of life by Miller & Urey
What is PRIMORDIAL SOUP?
Looking at DNA and proteins (amino acid sequences) to show common ancestry
What is ABSOLUTE DATING?
Fossils created from organisms being trapped in tree resin (sap)