Ch 14 Origin of Life Quiz

Question 1

Age of the Earth

Answer 1

4.6 billion years

Question 2

Which gas did not exist on primitive Earth?

Answer 2

Oxygen

Question 3

Miller and Urey’s experiment

Answer 3

The experiment replicated a primitive Earth-like conditions and produced organic compounds

Question 4

heterotrophic prokaryote -

Answer 4

consumed spontaneous organic compounds

Question 5

chemosynthetic prokaryote

Answer 5

produced food through chemosynthesis

Question 6

photosynthetic prokaryote

Answer 6

produced food through photosynthesis and created oxygen as a byproduct

Question 7

prokaryotes that carried out aerobic respiration

Answer 7

able to use oxygen to generate energy

Question 8

Eukaryotes

Answer 8

origin of organelles due to endosymbiosis

Question 9

Law of superposition

Answer 9

successive layers of rock or soil were deposited on top of one another by wind and water; the lowest stratum (layer) is the oldest, while the top stratum is the most recent.

Question 10

Radioactive isotope

Answer 10

isotopes (atoms of the same element that with varying numbers of neutrons) that have an unstable combination of protons and neutrons and can emit radiation

Question 11

Radioactive decay

Answer 11

process in which the nucleus of a radioactive isotope loses energy by emitting radiation

Question 12

Half-life

Answer 12

the time that one-half of a sample of the isotope takes to decay