Origins of Life

Question 1

virus

Answer 1

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

Question 2

viruses causing diseases are known as

Answer 2

pathogens

Question 3

Bacteriophage

Answer 3

virus infects bacteria

Question 4

Big Bang theory

Answer 4

simultaneous appearance of matter and energy

Question 5

Big Splash

Answer 5

held by earth’s gravity; collision and rebound of “planetesimal”

Question 6

Earth’s atmosphere

Answer 6

first: hydrogen and helium
second: no free oxygen

Question 7

possible sources of life first building blocks

Answer 7

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

Question 8

Great Oxidation Event

Answer 8

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

Question 9

Mass extinction event of Permian

Answer 9

greatest extinction: 95% marine and 70% terrestrial lost

Question 10

cartilaginous fishes

Answer 10

have a cartilage skeleton

Question 11

bony fishes

Answer 11

bony skeleton