Origins of Life Flashcards Preview

Bio 100 > Origins of Life > Flashcards

Flashcards in Origins of Life Deck (11):
1

virus

noncellular infectious particle consisting of RNA or DNA and proteins; can only replicate in living cell

2

viruses causing diseases are known as

pathogens

3

Bacteriophage

virus infects bacteria

4

Big Bang theory

simultaneous appearance of matter and energy

5

Big Splash

held by earth's gravity; collision and rebound of "planetesimal"

6

Earth's atmosphere

first: hydrogen and helium
second: no free oxygen

7

possible sources of life first building blocks

Miller-Urey experiemtn, Wasctershauser-Huber experiment with hydrothermal vents, and meteorites

8

Great Oxidation Event

Oxygen toxic to anaerobic organism which is linked to rise of multicellular organism and evolution of eukaryotic organisms

9

Mass extinction event of Permian

greatest extinction: 95% marine and 70% terrestrial lost

10

cartilaginous fishes

have a cartilage skeleton

11

bony fishes

bony skeleton