Honors bio history of life & taxonomy

The fossil record

A group of fossils that has been analyzed & placed in order

Relative age dating

Determine rock age relative to another layer

Radiometric dating

using radioactive isotopes to get an actual date

Index fossil

Fossils that can be used to get an actual date

Convolution

2 organisms that evolve “ together “

Convergent evolution

When 2 differing organisms evolve similarly

Divergent evolution

When 2 organisms “ evolve apart “

Gradualism

Slow & steady evolution

Punctuated equilibrium

Evolution in spurts

What time period took the longest & how much%

Precambrian (88%)

What were the dominant organisms in each time period

Precambrian= single called organisms

Paleozoic-fish

Mesozoic-dinosaurs

Cenozoic-mammals

What causes an end of a time period?

Mass extinction

How are geologic / earth events caused by

Precambrian-oceans ad atmosphere start

Paleozoic-Pangea forms

Mesozoic-super continent breaks apart

Cenozoic-continent reach current locations

Who Darwin agree w/ gradualism or punctuated equilibrium

Gradualism bc he believed in slow and steady changes

What is significant about the Cambrian explosion

Basically, all of the body plans we see today evolved here.

how to find how old a substance is with a percent of a radioactive substance remaining?

find out how much 1 hake life is, then multiply it by how much the percent is corresponding to the graph.

Why could u not use Carbon 14 to determine the age of VERY old substances?

B/c there won’t be enough radioactive isotope left

What does this experiment show?

That you can get to “organic” chemistry from the foundational molecules on earth

What’s the difference between domain archea, bacteria, and eukarya

Archaea - (extremophile) bacteria type

Bacteria - traditional bacteria

Eukarya - membrane bound organelles present

Differentiate between the 6 kingdoms ( animalia, plantae, fungi, Protista, eubacteria, archaebacteria)

Animalia,planetary,fungi,and protists are all eukaryotic

Animalia-heterotropic and no cell walls

Plantae-antotrophic and has cell walls

Fungi-heterotropic and has cell walls

Protista-this is a “grab bag” of multi and single celled organisms from pond water

Eubacteria and archaebacteria- both are prokaryotic cells

What are the 8 levels of taxonomic classification from largest to smallest

Domain kingdom phylum class order family genus species

What two levels are used in an organisms scientific name

Genus and species

Linnaean classification

Based off similar characteristics like the fish and dolphin cause they both have fins

Both Linnaean and evolutionary classification

Grouped living things into “TAXA” or groups

Evolutionary classification

Based off of evolutionary relationships

How to do a cladogram

1) find the outgroup