BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 25, Problem 4U
Which of the following events occurred first in eukaryotic evolution?
a. Endosymbiosis and mitochondria evolution
b. Endosymbiosis and chloroplast evolution
c. Compartmentalization and formation of the nucleus
d. Formation of multicellular organisms
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All living things are divided into three domains: bacteria, archaea, and eukarya. They have several traits that are specific to each domain or shared across the domains.
Based on this information, what traits would the last universal common ancestor (LUCA) be expected to have?
A. Nuclear envelope, introns in genes, and peptidoglycan in cell walls.
B. Histones associated with DNA, circular chromosome, and peptidoglycan in cell walls.
C. Unbranched hydrocarbons in membrane lipids, histones associated with DNA, and introns in genes.
D. Circular chromosome, unbranched hydrocarbons in membrane lipids, and one kind of RNA polymerase.
Place these events in the history of life on Earth in the order that they occurred. a. accumulation of O2 in Earth’s atmosphere b. colonization of land by plants and fungi c. diversification of animals (Cambrian explosion) d. origin of eukaryotes e. origin of humans f. origin of multicellular organisms g. origin of prokaryotes
Which of the following is thought to be the most closely related to the common animal ancestor? a. fungal cells b. protist cells c. plant cells d. bacterial cells
Chapter 25 Solutions
BIOLOGY
Ch. 25.1 - Describe the history of the Earth.Ch. 25.1 - Understand the relationship between geological...Ch. 25.2 - Contrast todays atmosphere with the likely...Ch. 25.2 - Prob. 2LOCh. 25.3 - Prob. 1LOCh. 25.4 - Prob. 1LOCh. 25.4 - Prob. 2LOCh. 25.5 - Compare and contrast the evolution of the...Ch. 25.5 - Discuss the types of cell specialization necessary...Ch. 25 - The Miller-Urey experiment demonstrated that a....
Ch. 25 - Plate tectonics can contribute to a. volcanoes and...Ch. 25 - Identify which of the following statements is...Ch. 25 - Which of the following events occurred first in...Ch. 25 - Fossil data indicate that a. life originated 4...Ch. 25 - A global glaciation would be unlikely to occur if...Ch. 25 - Although we do not know how early life arose, the...Ch. 25 - Which bits of evidence would convince you that...Ch. 25 - During which tunes would you expect that...Ch. 25 - The chloroplasts of brown algae a. have a...Ch. 25 - Vascular plants sequestered large amounts of CO2...Ch. 25 - Synthesizing what you have learned in this...Ch. 25 - Prob. 3S
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- What do the multiple branching points at the root of the eukaryotic phylogenetic tree indicate about the evolution of eukaryotes? A. that unikonts are derived from the SAR clade B. that Archaeplastids were the first eukaryotes C. that fungi are more closely related to plants than animals D. that eukaryotes are all descended from a common ancestorarrow_forwardwhy was the first mini threshold of life's evolution, photosynthesis, so important? a. it helped plants move onto land b. it transformed our atmosphere from oxygen-rich to carbon dioxide-rich c. it allowed life to spread beyond oceanic vents d. it forced organism to become multicellular to process more complex energyarrow_forwardThe evolution of eukaryotes was most directly enabled by which of the following? a. Diversification within prokaryotes b. Chemical evolution of organic polymers c. Evolutionary split between prokaryotes and archaea d. Prokaryotic autotrophs increasing atmospheric oxygen e. Decrease of the Earth's surface Which of the following statements is true about ribonucleic acid? I. RNA carries genetic information II. RNA can serve structural and catalytic roles III. Air replicating organisms contain RNA a. I only b. II only c. III only d. I and II only e. I, II, and IIIarrow_forward
- Which of these steps probably occurred first in the chemical andbiological evolution of life?a. The cell membrane of a protobiont formed.b. The first organic molecules formed.c. The original genetic material was RNA.d. Simple organic monomers formed from inorganic materials.arrow_forwardSince 1735, the Linnaean classification system has been the basic system for all taxonomy in biology. Which statement best explains the reason for changing how organisms are classified today? A. Organisms are evolving at a faster rate than in the past B. More diverse and complex organisms are being discovered C.  There are more organisms today than there were in the past D. New information about the genetics of species is being discoveredarrow_forwardThe first whole-life phylogenies based on sequence data were estimated on the basis of small _______-based genes; and these phylogenies revealed that the traditional five-kingdom system of classification offers a misleading view of evolutionary relationships. A. rRNA B. miRNA C. mRNA D. tRNAarrow_forward
- Which of the following is the last step in the Oparin-Haldane Model for the beginning of life? a. Membranes form around the first cells b. Simple molecules assembled into building blocks c. Polymers assembled from simple building blocks d. Asteroids and meteors provide building blocks for life on eartharrow_forwardWould the evidence suggest that mitochondria or chloroplasts were the first to evolve through endosymbiosis?arrow_forwardWhich of the following pairs of taxa are most closely related? A. Eubacteria and Archaea B. Archaea and Eukarya C. Eubacteria and the Last Universal Common Ancestor D. Eukarya and Eubacteria E. Eukarya and the Last Universal Common Ancestor?arrow_forward
- Which 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_forwardYou are examining an organism you believe to be an animal. Which of the following would NOT support your hypothesis? O A The organism appears to be heterotrophic. O B The organism appears to be multicellular. O C The organism appears to be motile. O D The organism appears to have cell walls. O E All animals, including sponges, have development directed by Hox genes.arrow_forwardCompare and contrast the evolutionary theory and creationism theory on the origin of life molecules, the origin of prokaryotes, and the origin of eukaryotes.arrow_forward
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