Podcast
Questions and Answers
Earth formed about 4.5 ______
Earth formed about 4.5 ______
BYA
Constant striking of comets and asteroids contributed to sterility of ______
Constant striking of comets and asteroids contributed to sterility of ______
Earth
Intense heat and absence of ______ made Earth devoid of life
Intense heat and absence of ______ made Earth devoid of life
liquid water
Earth was ______, 2.5 BYA, because there was no ozone layer
Earth was ______, 2.5 BYA, because there was no ozone layer
Signup and view all the answers
This was before the start of the great oxidation ______
This was before the start of the great oxidation ______
Signup and view all the answers
The oxidation rise happened during the start of the oxidation ______
The oxidation rise happened during the start of the oxidation ______
Signup and view all the answers
Liquid ______ is a requirement to life
Liquid ______ is a requirement to life
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 ______
Water on Earth originated from volcanic outgassing of the planet’s interior from the innumerable collisions with icy comets and ______
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
In the early years when Earth was incredibly hot, water was present as water ______ due to Earth’s high temperatures
Signup and view all the answers
Jack Hills Zircon (ZrSiO4) Oldest known mineral formed in the ______ eon
Jack Hills Zircon (ZrSiO4) Oldest known mineral formed in the ______ eon
Signup and view all the answers
Mineral pores can serve as compartments to house pre-cellular biochemical ______
Mineral pores can serve as compartments to house pre-cellular biochemical ______
Signup and view all the answers
The formation of cells came first, followed by ______, and finally genes
The formation of cells came first, followed by ______, and finally genes
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
The environments on early Earth aided chemical reactions that resulted in the formation of more complex organic molecules from more simpler ______ precursors
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 ______
Proto-metabolisms in the form of organizations of molecular species emerged and evolved first without any involvement of self-replicating ______
Signup and view all the answers
Early life forms that grow at 80C – 113C with pH range of 0-9.0 are called ______
Early life forms that grow at 80C – 113C with pH range of 0-9.0 are called ______
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 ______
The last universal common ancestor which preceded the divergence of Bacteria and Archaea was a cellular organism that had a lipid ______
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 ______
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 ______
Signup and view all the answers
The metabolism of cyanobacteria yielded O2 that oxidized reduced minerals containing Fe2+ to iron oxidizes containing ______
The metabolism of cyanobacteria yielded O2 that oxidized reduced minerals containing Fe2+ to iron oxidizes containing ______
Signup and view all the answers
Anoxygenic bacterial photosynthesis involving purple and green bacteria where H2S was the electron source led to the ______
Anoxygenic bacterial photosynthesis involving purple and green bacteria where H2S was the electron source led to the ______
Signup and view all the answers
Fossils are important for understanding the evolution of plants and animals; some ______ fossilize too
Fossils are important for understanding the evolution of plants and animals; some ______ fossilize too
Signup and view all the answers
Stromatolites are formed when microbes cause the deposition of ______ minerals that promote fossilization
Stromatolites are formed when microbes cause the deposition of ______ minerals that promote fossilization
Signup and view all the answers
Aggregates found in the Archean Apex chert of Western Australia revealed ______ structures
Aggregates found in the Archean Apex chert of Western Australia revealed ______ structures
Signup and view all the answers
Cyanobacterial trichomes reported to be ______ years old
Cyanobacterial trichomes reported to be ______ years old
Signup and view all the answers
11 taxa of filamentous, dark brown to black carbonaceous ______ have been identified in the deposit
11 taxa of filamentous, dark brown to black carbonaceous ______ have been identified in the deposit
Signup and view all the answers
The presence of hopanes and steranes, derivatives of hopanoids and sterols, respectively, found in the plasma membrane are ______
The presence of hopanes and steranes, derivatives of hopanoids and sterols, respectively, found in the plasma membrane are ______
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
Endosymbiotic Theory: The organelles of eukaryotic cells arose from prokaryotic cells that had developed a ______ relationship with the eukaryote-to-be
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 ______
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 ______
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
Serial endosymbiosis hypothesis: Eukaryotic ancestor diverged from archaeal line and possessed a nucleus prior to ______ with bacterial ancestor of the mitochondrion
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 ______
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 ______
Signup and view all the answers
Transcription and translation have characteristics of ______
Transcription and translation have characteristics of ______
Signup and view all the answers
