BIOC61H3 Lecture Notes - Brachiopod, Joule, Milion

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Published on 15 Dec 2011
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Lecture 3
Brisoclon-5000 years
White polar bear descended from the brown
70% or more are arthropods or its relatives
have the greatest resilience to abiotic factors
require 2 molar to reproduce
archea bateria
not dangerous
don’t cause disease
1500-2000 genes
invests all genes into surviving
Picrophylus tolerant at PH 0
Monira
Normal bacteria
cause disease
Able to spring back to life, after prolonged periods of dormancy
beans in Australia (date palms) 200 thousand years of dormancy
germinated and come back to life
despite many mutations and abiotic factors.. were still tolerant
John Riscu
Moss from Siberia permafrost
40 000 years old
placed in nutrient suits. And recsucitated the moss
moss was brought back to life
Insects caught in amber
Caught in resonance in pine tres
When fed on they are found in resonance
Insects from 40 million years ago
unable to revive , but able to obtain gut bacteria, which were capble of
survived when cultured on Petri dishes.
can use amber preserves and figure out what was in their gut systems
find DNA,RNA, and calculate how much evolution has occurred
New Mexico
250 x10^6 years old
250 million years
bacteria in ice
successful revivials of monira
bacteria came from contaminated hands of researchers
Moss of Richard guvers is true
Organisms in underground subway systems are mistakened to be human’s ages
Rocks are constantly transforming, leading to intrusions into other types of rocks, leading
to this hypothesis—therefore incorrect
There were intrusions into the rock, that brough bacteria that we can build up
Many fossils are not pure
Capela dos ossos Portugal
Mars
rovers landed, contaminating mars
possibility of finding contaminated bacteria from earth’s equipment
highly unlikely there is life on mars
1) there maybe water on mars—(in the media water= life_
a. reality water is essential for life, but just cause water is present
doesn’t mean it equates to life
b. biomechanic niches
c. need aqueous solution
i. for DNA replication
ii. need the right amount of water and salt
iii. ocean—black smoke
1. right amount of salt
2. right temperature
3. other things are required for life to form
a. requirements for life are infinite
b. once life is there it can evolve
2) water channels are present, craters
a. but no life is found
Oldest rocks are in southafrica and Canada
Europa
experts argue there may be life
temp range
not very hospitable
no evidence of life
atmosphere is made of CO2
ono noble gasses
earth’s been around 2.1 billions years
2.1 x10^9 years
Modern archea bacteria
Monira
Eukaryotic cells were around before archea bacteria
Hadeon no life
4.6 billion -3.8 billion
Moon was created
Earth was violent
In hospitable place
1) Hilary-healthy community to raise children
2) Competition
a. Evolution, adaptations are due to evolution
b. Weaker species need to occupy other niches
c. Keep occupying new niches
3) All things in flux
After archeaon and hadean era life evolved
Photosynthesis 2.1 x10^9 years
Global conversion
Fe fe3+
Early life forms were anerobic
Proerozoic
Microbiological bacteria
Archea bacteria
Unicellular life
Phanerzoic-precambrian
Brigashates
Explosions of multicellular species
Fish
Major animals
*know geological time and what occurred
named 2 million species believed to have 10- 100 million species
1st era with the largest amount of species
westerAustralia
Somtrolats
3.5 billion
Ghost of competition past

Document Summary

70% or more are arthropods or its relatives. Have the greatest resilience to abiotic factors require 2 molar to reproduce archea bateria. Able to spring back to life, after prolonged periods of dormancy. Beans in australia (date palms) 200 thousand years of dormancy. Germinated and come back to life despite many mutations and abiotic factors were still tolerant. 40 000 years old placed in nutrient suits. When fed on they are found in resonance. Insects from 40 million years ago survived when cultured on petri dishes. Unable to revive , but able to obtain gut bacteria, which were capble of. Can use amber preserves and figure out what was in their gut systems. Find dna,rna, and calculate how much evolution has occurred. Successful revivials of monira bacteria came from contaminated hands of researchers. Organisms in underground subway systems are mistakened to be human"s ages.