chpt 20 History of LIfe

Earth's early amosphere contained little or no oxygen.

• True

• False

Tags

NGSS.HS-ESS1-6

How old is the Earth?

• 6,000 years

• 200,000 years

• 3 million years

• 4.5 billion years

Tags

NGSS.HS-ESS1-6

Fossil remains of a trilobite are most likely to be found in what type of rock?

• metamorphic

• igneous

• sedimentary

• volcanic

Tags

NGSS.MS-ESS2-3

method of determining the age based on measuring radioactive elements

• relative dating

• teenage dating

• absolute (radiometric) dating

The first eukaryotic cells are more likely to have evolved from ______________

• exocytosis

• endosymbiosis

• organelles

• Archaebacteria

Tags

NGSS.HS-LS4-2

These two organelles definitely arose from endosymbiosis.

• Nucleus and cell membrane

• chloroplast and mitochondria

• mitochondria and nucles

• cell wall and chlorplast

What was formed in the Miller-Urey experiments?

• DNA

• living cells

• proteins

• amino acids

Tags

NGSS.HS-LS1-6

When a fossil is compared to the age of other fossils in the same layer, this is use of

• absolute (radiometric) dating

• geologic time scale

• relative dating

• fossil record

The amount of time it takes for half of the radioactive atoms in an isotope to decay is known as

• fossil record

• index fossil

• geologic time scale

• half-life

Tags

NGSS.HS-PS1-8

Describes evolution toward similar traits in unrelated species. (ex) shark & dolphin body shape & fins

• coevolution

• divergent evolution

• convergent evolution

• punctuated equilibrium