Microbial ecology Exam 2024 -2025 With 100%
Guaranteed Solutions
oldest fossils resemble bacteria (3.7 bya)
facts
early atmosphere gases
H2 rich
methane
ammonia
water
carbon dioxide
under the right conditions of heat, water, and early's earth's gases, amino acids formed
miller's prebiotic simulation
crevices of hydrothermal rock formations on sea floor are most likely the site for formation of
early life
vrai
what was the first RNA-like molecule?
PNA (soup-to-crepe) glycine backbone with nitrogenous bases
what does reverse transcriptase do
makes DNA from RNA
protocell
An abiotic precursor of a living cell that had a membrane-like structure and that maintained an
internal chemistry different from that of its surroundings.
with UV light and Ferrous iron and Hydrogen, we can get hydrogen gas in early microbes to
make ATP
facts:
early alternative source of H2
, Archea is more closely related to
Eukarya
Crenarchaeota and Euryarchaeota
two main groups of Archaea
endosymbiosis theory
eurkaryotic organelles originated within Bacteria
Mitochondria arose from Proteobacteria
Chloroplasts arose from the cyanobacteria
EVIDENCE:
both chloro. and mitos. have small, circular DNA
Bacteria vs Archaea vs Eukarya
1. Prokaryotic cell structure
2. Chromosomal DNA in closed circle
3. Histone proteins with DNA
4. Nucleus
5. Mitochondria and/or chloroplast organelles
6. Cell wall with muramic acid
7. Membrane lipids
8. Ribosome mass
9. Genes with introns
10. Genes as operons
1. + + -
2. + + -
3. - + +
4. - - +
5. - - +
Guaranteed Solutions
oldest fossils resemble bacteria (3.7 bya)
facts
early atmosphere gases
H2 rich
methane
ammonia
water
carbon dioxide
under the right conditions of heat, water, and early's earth's gases, amino acids formed
miller's prebiotic simulation
crevices of hydrothermal rock formations on sea floor are most likely the site for formation of
early life
vrai
what was the first RNA-like molecule?
PNA (soup-to-crepe) glycine backbone with nitrogenous bases
what does reverse transcriptase do
makes DNA from RNA
protocell
An abiotic precursor of a living cell that had a membrane-like structure and that maintained an
internal chemistry different from that of its surroundings.
with UV light and Ferrous iron and Hydrogen, we can get hydrogen gas in early microbes to
make ATP
facts:
early alternative source of H2
, Archea is more closely related to
Eukarya
Crenarchaeota and Euryarchaeota
two main groups of Archaea
endosymbiosis theory
eurkaryotic organelles originated within Bacteria
Mitochondria arose from Proteobacteria
Chloroplasts arose from the cyanobacteria
EVIDENCE:
both chloro. and mitos. have small, circular DNA
Bacteria vs Archaea vs Eukarya
1. Prokaryotic cell structure
2. Chromosomal DNA in closed circle
3. Histone proteins with DNA
4. Nucleus
5. Mitochondria and/or chloroplast organelles
6. Cell wall with muramic acid
7. Membrane lipids
8. Ribosome mass
9. Genes with introns
10. Genes as operons
1. + + -
2. + + -
3. - + +
4. - - +
5. - - +
