Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 13, Problem 3RQ
The first organisms that oxygenated the atmosphere were ______.
a. cyanobacteria
b. phootrophic organisms
c. anaerobic organisms
d. allof the above
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Chapter 13 Solutions
Concepts of Biology
Ch. 13 - Figure 13.6 Which of the following statements is...Ch. 13 - The first forms of life on Earth were thought to...Ch. 13 - The first organisms that oxygenated the atmosphere...Ch. 13 - Which of the following consist of prokaryotic...Ch. 13 - Prokaryotes stain as Gram-positive or...Ch. 13 - Prokaryotes that obtain their energy from chemical...Ch. 13 - Bioremediation includes _____. a. the use of...Ch. 13 - What event is thought to have contributed to the...Ch. 13 - Mitochondria most likely evolved from_______. a. a...Ch. 13 - Protists with the capabilities to absorb nutrients...
Ch. 13 - Which parasitic protist evades the host immune...Ch. 13 - Which polysaccharide is usually found in the cell...Ch. 13 - What term describes the close association of a...Ch. 13 - Explain the reason why the imprudent and excessive...Ch. 13 - Your friend believes that prokaryotes are always...Ch. 13 - Describe the hypothesized steps in the origin of...Ch. 13 - How does killing Anopheles mosquitoes affect the...Ch. 13 - Without treatment, why does African sleeping...Ch. 13 - Why can superficial mycoses in humans lead to...
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- _______in the stomach of a cow release methane. a. Bacteria c. Aerobes b. Archaea d. Virusesarrow_forwardWhich of the following is an acellular microorganism lacking a nucleus?a. bacterium b. helminth. c. protozoan d. virusarrow_forward.further break down the nutrients left behind by scavengers. A. Cyanobacteria B. Proteus C. Fusarium D. Penicillium notatumarrow_forward
- Mitochondria most likely evolved from _____________. a. a photosynthetic cyanobacterium b. cytoskeletal elements c. aerobic bacteria d. membrane proliferationarrow_forward_______ are oxygen-releasing photoautotrophs. a. Spirochetes c. Cyanobacteria b. Methanogens d. Bacteriophagesarrow_forwardPhotosynthesis carried out by one group of ________ resulted in Earths first increase in atmospheric oxygen levels. a. archaea c. protists b. bacteria d. algaearrow_forward
- Recently, a microbe that is able to digest cellulose was discovered in a hot spring with an average temperature of 95°C. This microbe most likely belongs to which of the following groups? A. Archaea B. Proteobacteria C. Cyanobacteria D. Spirochetesarrow_forwardThe presence of what organism is sometimes used as an indicator that there is sewage present in the water? a. Escherichia coli or E. coli b. Pseudomonus c. Amoeba d. protozoaarrow_forward______are members of the phytoplankton . a. Water molds c. Diatoms b. Giant kelps d. Cellular slime moldsarrow_forward
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