Which of the following did not contribute to Earth's present atmospheric concentrations of oxygen and carbon dioxide? Choose one: o the evolution of eukaryotic organisms, which are more efficient at photosynthesis o the evolution of multicellular organisms, which are more efficient at producing oxygen o the evolution of cyanobacteria, which are photosynthetic single-celled organisms O carbon dioxide sequestration due to biomass burial

Which of the following did not contribute to Earth's present atmospheric concentrations of oxygen and carbon dioxide? Choose one: o the evolution of eukaryotic organisms, which are more efficient at photosynthesis o the evolution of multicellular organisms, which are more efficient at producing oxygen o the evolution of cyanobacteria, which are photosynthetic single-celled organisms O carbon dioxide sequestration due to biomass burial

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter18: Life's Origin And Early Evolution

Section: Chapter Questions

Problem 15SA: Arrange these events in order of occurrence, with 1 being the earliest and 6 the most recent: ___1...

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The oxygen revolution changed Earth’s environmentdramatically. Which of the following took advantage of thepresence of free oxygen in the oceans and atmosphere?(A) the evolution of cellular respiration, which used oxygen tohelp harvest energy from organic molecules(B) the persistence of some animal groups in anaerobichabitats(C) the evolution of photosynthetic pigments that protectedearly algae from the corrosive effects of oxygen(D) the evolution of chloroplasts after early protists incorporated photosynthetic cyanobacteria
Around the time Eukaryotic Cells began to compartmentalize their reactions, and the chloroplast and mitochondria evolved, the atmosphere went through a shift in composition. A new deadly gas became more and more prominent, which likely caused a mass extinction for those organisms that couldn't adapt to its toxicity. The gas was: Nitrogen Sulfuric Acid Oxygen Methane
Which of the following illustrates the unity observed in organisms with a common ancestor? Flamingos and penguins are different colors. The gene for the human hormone insulin can be inserted into bacteria, and the resulting bacteria can use the gene to produce functional insulin. A robin can fly, but a penguin cannot. Fungi tend to absorb nutrients from other organisms, while animals consume their food. O Living organisms span a range of sizes.
Approximately how long ago did homo sapen (humans) first appear on Earth 2,000 years ago 5-7 million years ago 65 million years ago 150,000 - 200,000 years ago Hominins developed their unique larger brains before acquiring the ability to move on two feet. True False the production of atmospheric oxygen in Earth's environment started with photosynthesis by prokaryotes photosynthesis by multicellular eukaryotes photosynthesis by single celled algae photosynthesis by land plants Homologous structures among animal provide evidence for evolution in that theses structure are all produced by the same gene different in different animals, but are modifications of the same basic structure similar in function, but of different basic structure all different structures within the same species
The first cells to evolve on our planet are thought to be from the Domain O Bacteria and thought to live in harsh environments O Eukarya and found in all habitats except harsh ones O Archaea and thought to live in harsh environments O Chordata and found in all habitats except harsh ones
Which of the following occurred first in the history of life on earth? Colonization of land Evolution of photosynthesis Origin of unicellular eukaryotes Origin of multicellular eukaryotes Origin of prokaryotes
Arrange these events in order of occurrence, with 1 being the earliest and 6 the most recent: ___1 a. Earths first seas form ___2 b. origin of mitochondria ___3 c. first protocells form ___4 d. Precambrian ends ___5 e. origin of chloroplasts ___6 f. first animals appear
Photosynthesis carried out by one group of ________ resulted in Earths first increase in atmospheric oxygen levels. a. archaea c. protists b. bacteria d. algae
Here is the question: What was the likely source of the raw material incorporated into the first life forms? I believe it is carbon, but I don't know why it is carbon. What I mean is, why is carbon considered the thing that makes something alive? Why are eukaryotes and prokaryotes simply considered alive just because they have carbon. Would that mean that carbon is alive because carbon has carbon? I would appreciate an anwser because I'm really trying to understand everything I run across. I love educating myself and I'm on a quest for knowledge. Thanks guys!
In their laboratory experiments of simulations of early Earth, Miller and Urey observed the abiotic synthesis of abundant amounts of DNA amino acids liposomes genetic systems Which of the following was probably NOT present in the primitive Earth s atmosphere (when life first appeared)? O2 NH3 H2O CH4 CO2
5)Which of the following observations constitutes evidence that mitochondria evolved before chloroplasts? Mitochondria are aerobic. Chloroplasts are photosynthetic. Aerobic bacteria evolved before photosynthetic bacteria (cyanobacteria). Some protists have separately evolved their own plastids (chloroplast-like structures) through endosymbiosis of cyanobacteria, or even through endosymbiosis of photosynthetic protists. All Eukaryotes have mitochondria; only a subset of Eukaryotes have chloroplasts.
The oxygen revolution permanently changed Earth’s environment and dramatically impacted the evolutionary history that followed. Answer ALL the questions related to this phenomenon, below. Give the span of geological timewhen the oxygen revolution occurred. Provide oneline ofevidence for the oxygen revolution. What evolutionary novelty(complex metabolic pathway) enabled these new organisms to release so much O2? Organisms with what kind of metabolismprobably went extinctbecause of the oxygen revolution? What kind of metabolism, not possible before, likely evolved in responseto the oxygen revolution?