Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 18, Problem 1FTB
Because there was no oxygen in the earliest atmosphere, the first cells must have derived energy by __________
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Chapter 18 Solutions
Biology: Life on Earth (11th Edition)
Ch. 18 - 1. Almost all of the oxygen gas in today’s...Ch. 18 - Extinction a. generally does not occur except...Ch. 18 - 3. In the endosymbiotic origin of the...Ch. 18 - 4. Which of the following does not list...Ch. 18 - Prob. 5MCCh. 18 - 1. Because there was no oxygen in the earliest...Ch. 18 - 2. The molecule ________ became a candidate for...Ch. 18 - 3. Complex cells that contain a nucleus and other...Ch. 18 - 4. The sperm of early land plants had to reach the...Ch. 18 - 5. Early plants that protected their seeds within...
Ch. 18 - Prob. 6FTBCh. 18 - Amphibians gave rise to ____________, which had...Ch. 18 - 1. What is the evidence that life might have...Ch. 18 - Prob. 2RQCh. 18 - 3. Explain the endosymbiont hypothesis for the...Ch. 18 - 4. Name two advantages of multicellularity for...Ch. 18 - What advantages and disadvantages would...Ch. 18 - 6. Outline the major adaptations that emerged...Ch. 18 - Outline the evolution of humans from early...Ch. 18 - Extinctions have occurred throughout the history...Ch. 18 - In biological terms, what do you think was the...
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- A rise in oxygen in Earths air and seas set the stage for the evolution of _______. a. aerobic respiration c. photosynthesis b. fermentation d. sexual reproductionarrow_forwardPhotosynthesis carried out by one group of ________ resulted in Earths first increase in atmospheric oxygen levels. a. archaea c. protists b. bacteria d. algaearrow_forwardThe first organisms that oxygenated the atmosphere were ______. a. cyanobacteria b. phootrophic organisms c. anaerobic organisms d. allof the abovearrow_forward
- Cyanobacteria was responsible for the increase in oxygen levels billions of years ago. They play a decisive role in changing the earth’s environment. Explain how are Cyanobacteria related in changing the early earth’s environment which later suitable for the development of other organisms.arrow_forwardOriginal cells were anaerobic and prokaryotic cells Eukaryotes evolved Multicellular organisms evolved Autotrophs evolved Aerobic organisms evolvedarrow_forwardMitochondria and chloroplasts contain some DNA, which more closely resembles prokaryotic DNA than (eukaryotic) nuclear DNA. Use this information to suggest how eukaryotes may have originated.arrow_forward
- The first forms of life on Earth were thought to be_____. a. single-celled plants b. prokaryotes c. insects d. large animals such as dinosaursarrow_forwardThe first living cells on earth would most likely resemble whichof these?a. a cyanobacterium c. a gram-positive cellb. an endospore former d. an archaeonarrow_forwardWhich statement about spontaneous generation is false? A. It addresses the formation of living cells from previously nonliving material. B. This was a common belief for during the Middle Ages. C. Pasteur demonstrated that it does not occur under normal laboratory conditions. D. It occurs every time a new species evolves from a preexisting species. E. It apparently occurred at least once – when life on Earth began.arrow_forward
- Compare and contrast mitochondria and chloroplasts in relation to the Endosymbiotic Theory.arrow_forwardMitochondria are located in the _ and serve as _ ? A. Cytoplasm; the energy producers of the cell B. Cytoplasm; protectors to fight off bacteria and intruders C. Nucleus; instruction givers from DNA to assemble protein D. Nucleus; transcribersarrow_forwardMake a time line of the development of microbiology from the 1600s totodayarrow_forward
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