Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 22, Problem 6RQ
The first organisms that oxygenated the atmosphere were
- cyanobacteria
- phototrophic organisms
- anaerobic organisms
- all of the above
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The first organisms that oxygenated the atmosphere were a. cyanobacteria b. phototrophic organisms c. anaerobic organisms d. all of the above
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Chapter 22 Solutions
Biology 2e
Ch. 22 - Figure 22.8 Compared to free-floating bacteria,...Ch. 22 - Figure 22.16 Which of the following statements is...Ch. 22 - Figure 22.19 Which of the following statements...Ch. 22 - The first forms of life on Earth were thought to...Ch. 22 - Microbial mats. are the earliest forms of life on...Ch. 22 - The first organisms that oxygenated the atmosphere...Ch. 22 - Halophiles are organisms that require a salt...Ch. 22 - Many of the first prokaryotes to be cultured in a...Ch. 22 - The presence of a membrane-enclosed nucleus is a...Ch. 22 - Which of the following consist of prokaryotic...
Ch. 22 - The cell wall is ___________ . interior to the...Ch. 22 - Organisms most likely to be found in extreme...Ch. 22 - Prokaryotes stain as Gram-positive or Gramnegative...Ch. 22 - Pseudopeptidoglycan is a characteristic of the...Ch. 22 - The lipopolysaccharide layer (LPS) is a...Ch. 22 - Which of the following elements is not a...Ch. 22 - Prokaryotes that obtain their energy from chemical...Ch. 22 - Ammonification is the process by which. ammonia is...Ch. 22 - Plants use carbon dioxide from the air and are...Ch. 22 - Cyanobacteria harness energy from the sun through...Ch. 22 - A disease that is constantly present in a...Ch. 22 - Which of the statements about biofilms is...Ch. 22 - Which of these statements is true? An antibiotic...Ch. 22 - A person in England arrives at a medical clinic...Ch. 22 - MRSA has emerged as a serious infectious disease,...Ch. 22 - Which of these occurs through symbiotic nitrogen...Ch. 22 - Synthetic compounds found in an organism but not...Ch. 22 - Bioremediation includes. the use of prokaryotes...Ch. 22 - In addition to providing yogurt with its unique...Ch. 22 - Describe briefly how you would detect the presence...Ch. 22 - Why do scientists believe that the first organisms...Ch. 22 - A new bacterial species is discovered and...Ch. 22 - Mention three differences between bacteria and...Ch. 22 - Explain the statement that both types, bacteria...Ch. 22 - A scientist isolates a new species of prokaryote...Ch. 22 - Think about the conditions (temperature, light,...Ch. 22 - Farmers continually rotate the crops grown in...Ch. 22 - Imagine a region of soil became contaminated,...Ch. 22 - Explain the reason why the imprudent and excessive...Ch. 22 - Researchers have discovered that washing spinach...Ch. 22 - Your friend believes that prokaryotes are always...Ch. 22 - Many people use antimicrobial soap to kill...
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- Photosynthesis carried out by one group of ________ resulted in Earths first increase in atmospheric oxygen levels. a. archaea c. protists b. bacteria d. algaearrow_forwardMitochondria most likely evolved from_______. a. a photosynthetic cyanobacterium b. cytoskeletal elements c. aerobic bacteria d. membrane proliferationarrow_forwardI took this picture recently of an organism growing on the surface of a rock. What type of organism is this? Protozoan Eubacteri Cyanobacteria Mushroom Lichenarrow_forward
- 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 Methanearrow_forwardWhich of the following cycles involves the processes of cellular respiration and photosynthesis to move matter? Water cycle Carbon cycle Nitrogen cycle Phosphorous cyclearrow_forwardWhich are photosynthetic in nature? euglenoids ciliates apicomplexa diatoms amoebas slime molds red algaearrow_forward
- Which sequence of events accurately describes the history of the planet (from oldest to youngest)? Eukaryotes appear, Oxygen increases in the atmosphere, Prokaryotes appear, Oxygen increases in the atmosphere, Eukaryotes appear, Prokaryotes appear Prokaryotes appear, Oxygen increases in the atmosphere, Eukaryotes appear Prokaryotes appear, Eukaryotes appear, Oxygen increases in the atmospherearrow_forwardBiology Which of the following is not a greenhouse gas? ) Methane ) Carbon dioxide Carbon monoxide Nitrogen Biologyarrow_forwardWhy are chloroplasts and mitochondria shown as arrows originating from the Bacteria ?arrow_forward
- Solid wastes produced from burning of fossils fuels is: A) Carbon dioxide B)Water vapor Ash Sulfur dioxidearrow_forwardWhich one is NOT an example of a decomposer? worm fungi leaves moldarrow_forwardWhich of the following is a taxonomic trait of animals Photosynthetic Autotrophic Single cellular Prokaryotic Hypertrophicarrow_forward
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