Chapter 9 Flashcards
(22 cards)
Role of meteors in how earth formed
Meteores brought specail elements to earth that had not pre existed, they also came together to form earth, and moon
Miller Ureys expirament
Simulated earths early climate and atmosphere to see if life could possibly exist.
Origin of heredity
prokaryotes (single cells, no nucleus or organelles)
- got energy from heterotrophic
First cells
Prokaryotic, no nucleus or organelles
Chemosynthesis
the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.
Cyanobacteria
Cyanobacteria - single called organisms, first example of single called organisms, first to use photosynthesis to take in oxygen
First eukaryotes
Evolved by enveloping other cells
First cells
Prokaryotes, simple, no nucleus
Early conditions
No oxygen, lightning, molten
Taxonomy
the science of classifying organisms based on physical traits.
Linnaeus
Scientist who created the Linnaean classification system, in the 1700 known as the father of taxonomy.
Aristotle
Guy who did stuff
Taxonomic catagories
Kingdom,phylum, class, order, family, genus, species.
Scientific name/binomial nomenclature
Genus, species
Common names
What we call stuff
Language for classification
Latin
Hierarchy of taxa
Kingdom, phylum, class, order, family, genus , species
Phylogeny
The evolutionary history of a group of related organisms
Phylogenic tree
How to represent phylogeny
Clade
A group of organisms including its ancestor
Cladogram
Represents a Claude
How to classify organisms,
According to Linnaeus by physical traits, and according to phylogeny, by its ancestor
