Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 19, Problem 3SQ
Stanley Miller's experiment demonstrated that _______.
- a. Earth is more than 4 billion years old
- b. under some conditions, amino acids can assemble spontaneously from inorganic materials
- c. oxygen is necessary for all life
- d. RNA was the first genome
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Which of the following was likely MOST important for life to begin existing on Earth?
A.
sunlight
B.
DNA
C.
a source of oxygen
D.
a source of energy
The Miller experiment did not create life, nor did the gases used resemble Earth’s first atmosphere as we presently understand it. The experiment was important because it
a.
showed that complex organic molecules can form under a variety of circumstances.
b.
synthesized the carbon atom.
c.
produced a DNA by-product that eventually leads to RNA and other bases.
d.
produced RNA, which later formed proteins out of the amino acids.
e.
synthesized the four bases needed for the production of DNA.
The first forms of life on Earth were thought to be_________. a. single-celled plants b. prokaryotes c. insects d. large animals such as dinosaurs
Chapter 19 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 19 - Antibiotic Effects on Mitochondria Tetracyclines...Ch. 19 - Antibiotic Effects on Mitochondria Tetracyclines...Ch. 19 - Antibiotic Effects on Mitochondria Tetracyclines...Ch. 19 - Antibiotic Effects on Mitochondria Tetracyclines...Ch. 19 - Which of the following is NOT true of conditions...Ch. 19 - An abundance of _______ in Earth's early...Ch. 19 - Stanley Miller's experiment demonstrated that...Ch. 19 - According to one hypothesis, negatively charged...Ch. 19 - The prevalence of _______ in living organisms is...Ch. 19 - Prob. 6SQ
Ch. 19 - Among prokaryotes, only the cyanobacteria _______....Ch. 19 - The evolution of _______ resulted in the eventual...Ch. 19 - Evolution of _______ increased the energy...Ch. 19 - Infoldings of the plasma membrane into the...Ch. 19 - The host cell in the endosymbiosis that produced...Ch. 19 - A stromatolite is a structure __________ . a....Ch. 19 - Prob. 13SQCh. 19 - Which of the following events did NOT occur during...Ch. 19 - Chronologically arrange the evolutionary events,...Ch. 19 - Researchers looking for fossils of the earliest...Ch. 19 - The astronomer Carl Sagan once said, "We are made...Ch. 19 - How did the evolution of oxygen-releasing...Ch. 19 - Just as all life shares a last universal common...
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- By one hypothesis, clay________. a. facilitated assembly of early polypeptides b. was present at hydrothermal vents c. provided energy for early metabolism d. served as an early genomearrow_forwardAstronomers have made great strides in sending probes out to other planets and moons in our solar system. If they were to find a living creature some place other than Earth, how could DNA analysis help them better understand the organism? Explain in 1–2 sentencesarrow_forwardThe Miller experiment created a. life. b. artificial proteins. c. DNA. d. simple molds. e. amino acids.arrow_forward
- the same as the genus of an animal that steals chloroplasts from algae. It can keep the chloroplasts alive for many months, thanks to genes that were originally part of the algae genome. What kind of animal is this? A. Luna both caterpillars, Insecta, Arthropod B. Marine Flatworm, platyhelminthes C. Sea slug, mollusk gastropod D. Bivalve, Mollusk 18arrow_forwardWhat was Oparin-Haldane hypothesis on the emergence of life on Earth? A. The Earth's amino acids were derived from volcanic eruptions B. The Earth's amino acids were from a 4.5 billion years old meteorite C. Inorganic compounds created organic compounds spontaneously D. Inorganic compounds were results of lightning and UV radiationarrow_forwardThe Miller experiment consisted of various gases, believed to have been present in the early atmosphere of Earth, exposed to an electrical arc. This experiment resulted in a. nothing. b. carbon dioxide gas and water vapor. c. amino acids. d. rain.arrow_forward
- The most pivotal event in the history of life on Earth, allowing for the emergence of eukaryotic cells, was the _____________.arrow_forwardIn its organization, chloroplast DNA is most similar to a. bacteria. b. archaea. c. nuclear DNA of plants. d. nuclear DNA of primitive eukaryotesarrow_forwardThe first forms of life on Earth were thought to be_____. a. single-celled plants b. prokaryotes c. insects d. large animals such as dinosaursarrow_forward
- Why are humans so genetically similar within our species? A. Humans are not very genetically similar to one another. B. Because humans evolved in one location (Africa) and we have existed as a species for very long time. C. Because humans evolved in multiple locations around the world at different times. D. Because humans evolved in one location (Africa) and we haven't existed as a species for very long.arrow_forwardwhat simple organic molecules were likely the precursors of life? a. water and proteins b. amino acids and nucleotides c. oxygen and carbon d. prokaryotes and eukaryotesarrow_forwardwhich term describes any ancient remains, impressions, or traces of an organism or traces of its activity that have been preserved in rocks or other mineral deposits in Earth’s crust? a. analogous feature b. homologous feature c. mutation d. fossilarrow_forward
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