Microbial Evolution and Early Life on Earth

Play an AI-generated podcast conversation about this lesson

Earth formed about 4.5 ______

BYA

Constant striking of comets and asteroids contributed to sterility of ______

Earth

Intense heat and absence of ______ made Earth devoid of life

liquid water

Earth was ______, 2.5 BYA, because there was no ozone layer

anoxic Signup and view all the answers

This was before the start of the great oxidation ______

event Signup and view all the answers

The oxidation rise happened during the start of the oxidation ______

event Signup and view all the answers

Liquid ______ is a requirement to life

water Signup and view all the answers

Water on Earth originated from volcanic outgassing of the planet’s interior from the innumerable collisions with icy comets and ______

asteroids Signup and view all the answers

In the early years when Earth was incredibly hot, water was present as water ______ due to Earth’s high temperatures

vapor Signup and view all the answers

Jack Hills Zircon (ZrSiO4) Oldest known mineral formed in the ______ eon

Hadean Signup and view all the answers

Mineral pores can serve as compartments to house pre-cellular biochemical ______

reactions Signup and view all the answers

The formation of cells came first, followed by ______, and finally genes

enzymes Signup and view all the answers

The environments on early Earth aided chemical reactions that resulted in the formation of more complex organic molecules from more simpler ______ precursors

inorganic Signup and view all the answers

Proto-metabolisms in the form of organizations of molecular species emerged and evolved first without any involvement of self-replicating ______

RNA Signup and view all the answers

Early life forms that grow at 80C – 113C with pH range of 0-9.0 are called ______

thermophilic chemolithotrophs Signup and view all the answers

The last universal common ancestor which preceded the divergence of Bacteria and Archaea was a cellular organism that had a lipid ______

bilayer Signup and view all the answers

The point at which Bacteria and Archaea diverged is estimated to be around 3.7-3.8 BYA, where the last universal common ancestor (LUCA) likely ______

existed Signup and view all the answers

The metabolism of cyanobacteria yielded O2 that oxidized reduced minerals containing Fe2+ to iron oxidizes containing ______

Fe3+ Signup and view all the answers

Anoxygenic bacterial photosynthesis involving purple and green bacteria where H2S was the electron source led to the ______

Great Oxidation Event Signup and view all the answers

Fossils are important for understanding the evolution of plants and animals; some ______ fossilize too

microorganisms Signup and view all the answers

Stromatolites are formed when microbes cause the deposition of ______ minerals that promote fossilization

carbonate or silicate Signup and view all the answers

Aggregates found in the Archean Apex chert of Western Australia revealed ______ structures

cell-like Signup and view all the answers

Cyanobacterial trichomes reported to be ______ years old

3.5 billion Signup and view all the answers

11 taxa of filamentous, dark brown to black carbonaceous ______ have been identified in the deposit

microfossils Signup and view all the answers

The presence of hopanes and steranes, derivatives of hopanoids and sterols, respectively, found in the plasma membrane are ______

biomarkers Signup and view all the answers

Endosymbiotic Theory: The organelles of eukaryotic cells arose from prokaryotic cells that had developed a ______ relationship with the eukaryote-to-be

symbiotic Signup and view all the answers

Symbiosis is a relationship between two different kinds of organisms that live in close contact. IF one lives inside the other, the relationship is known as ______

endosymbiosis Signup and view all the answers

Serial endosymbiosis hypothesis: Eukaryotic ancestor diverged from archaeal line and possessed a nucleus prior to ______ with bacterial ancestor of the mitochondrion

endosymbiosis Signup and view all the answers

Symbiogenesis hypothesis: Eukaryotic cell evolved from a symbiotic relationship between Archaea and Bacteria. Bacteria was engulfed by archaeal partner and evolved over time into the mitochondrion. The nucleus evolved after establishment of ______

endosymbiosis Signup and view all the answers

Transcription and translation have characteristics of ______

Archaea Signup and view all the answers

Microbial Evolution and Early Life on Earth

Podcast Beta

Questions and Answers

Earth formed about 4.5 ______

Constant striking of comets and asteroids contributed to sterility of ______

Intense heat and absence of ______ made Earth devoid of life

Earth was ______, 2.5 BYA, because there was no ozone layer

This was before the start of the great oxidation ______

The oxidation rise happened during the start of the oxidation ______

Liquid ______ is a requirement to life

Water on Earth originated from volcanic outgassing of the planet’s interior from the innumerable collisions with icy comets and ______

In the early years when Earth was incredibly hot, water was present as water ______ due to Earth’s high temperatures

Jack Hills Zircon (ZrSiO4) Oldest known mineral formed in the ______ eon

Mineral pores can serve as compartments to house pre-cellular biochemical ______

The formation of cells came first, followed by ______, and finally genes

The environments on early Earth aided chemical reactions that resulted in the formation of more complex organic molecules from more simpler ______ precursors

Proto-metabolisms in the form of organizations of molecular species emerged and evolved first without any involvement of self-replicating ______

Early life forms that grow at 80C – 113C with pH range of 0-9.0 are called ______

The last universal common ancestor which preceded the divergence of Bacteria and Archaea was a cellular organism that had a lipid ______

The point at which Bacteria and Archaea diverged is estimated to be around 3.7-3.8 BYA, where the last universal common ancestor (LUCA) likely ______

The metabolism of cyanobacteria yielded O2 that oxidized reduced minerals containing Fe2+ to iron oxidizes containing ______

Anoxygenic bacterial photosynthesis involving purple and green bacteria where H2S was the electron source led to the ______

Fossils are important for understanding the evolution of plants and animals; some ______ fossilize too

Stromatolites are formed when microbes cause the deposition of ______ minerals that promote fossilization

Aggregates found in the Archean Apex chert of Western Australia revealed ______ structures

Cyanobacterial trichomes reported to be ______ years old

11 taxa of filamentous, dark brown to black carbonaceous ______ have been identified in the deposit

The presence of hopanes and steranes, derivatives of hopanoids and sterols, respectively, found in the plasma membrane are ______

Endosymbiotic Theory: The organelles of eukaryotic cells arose from prokaryotic cells that had developed a ______ relationship with the eukaryote-to-be

Symbiosis is a relationship between two different kinds of organisms that live in close contact. IF one lives inside the other, the relationship is known as ______

Serial endosymbiosis hypothesis: Eukaryotic ancestor diverged from archaeal line and possessed a nucleus prior to ______ with bacterial ancestor of the mitochondrion

Symbiogenesis hypothesis: Eukaryotic cell evolved from a symbiotic relationship between Archaea and Bacteria. Bacteria was engulfed by archaeal partner and evolved over time into the mitochondrion. The nucleus evolved after establishment of ______

Transcription and translation have characteristics of ______

More Quizzes Like This

Microbial Evolution and Early Life on Earth

Microbial Evolution and Milestones in Microbiology

Microbial Evolution Chapter 1

Genomics: Evolution and Nucleotide Sequences

Upgrade to continue