Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 26, Problem 13PIAT
Summary Introduction
To review:
Whether the early classification system of the organisms into prokaryotes and eukaryotes is compatible with the two and three-domain system of classifications.
Introduction:
Early views on the classification of the organisms believed that there can be only two fundamental lineages either the prokaryotes or the eukaryotes.
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Chapter 26 Solutions
Biological Science (6th Edition)
Ch. 26 - 1. What do some photosynthetic bacteria use as a...Ch. 26 - What are organisms called that use inorganic...Ch. 26 - Prob. 3TYKCh. 26 - Prob. 4TYKCh. 26 - 5. What has metagenomic analysis allowed...Ch. 26 - Prob. 6TYUCh. 26 - Prob. 7TYUCh. 26 - Prob. 8TYUCh. 26 - PROCESS OF SCIENCE Streptococcus mutans obtains...Ch. 26 - PROCESS OF SCIENCE Suppose that you’ve been hired...
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- Based on the accompanying evolutionary tree, which prokaryotic domain gave rise to the domain Eukarya? Which kingdom in domain Eukarya gave rise to plants, animals, and fungi?arrow_forwardFossil evidence indicates that prokaryotes have been around for about 3.5 billion years, whereas the origin of eukaryotes has been dated at only about 1.5 billion years ago. Suggest why, in spite of the lesser time for evolution, eukaryotes are much more diverse (have a much larger number of species) than prokaryotes.arrow_forwardThe TATA-binding protein (TBP) is thought to be necessary for transcription in all eukaryotic cell nuclei. Studies show that archaea, but not bacteria,have a protein structurally and functionally similar to TBP. What does this similarity suggest regarding the evolution of archaea, bacteria, and eukaryotes? How might knowledge of this similarity affect how systematists classify these organisms?arrow_forward
- Name of the group of microorganisms that completely changed the evolution of life on Earth. - Why can we say that this group contributed to the delimitation of the limits of life? What is their ecological role? - How did these organisms contribute to the evolution of eukaryotic cells and metabolisms? - How did these organisms contribute to the establishment of life in extraterrestrial (out-of-water) environments?arrow_forwardJust as all life shares a last universal common ancestor, all eukaryotes share a last eukaryotic common ancestor (LECA). In considering what LECA was like, scientists look for features and processes common to all or nearly all eukaryotic groups. They assume that these structures emerged before the groups diverged and thus were present in LECA. Make a list of the features and processes that you think might have been passed down from LECA to modern eukaryotes.arrow_forwardWhat 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_forward
- Describe some of the hypotheses on the origin of life and the characteristics of early prokaryotes, eukaryotes, and multicellular organisms.arrow_forwardWhich of the following is evidence that eukaryotes and prokaryotes share a common ancestor? a.All eukaryotes and prokaryotes use organic molecules as an energy source. b.All eukaryotes and prokaryotes are capable of mitosis. c.All eukaryotes and prokaryotes contain ribosomes. d.All eukaryotes and prokaryotes contain linear DNA.arrow_forwardWhat is a domain ? What are the three domains of life on Earth? Explain briefly.arrow_forward
- Which of the following statements about eukaryotes is correct? - Eukaryotes are life forms that possess a nucleus in the cells. - Some cellular features, such as endoplasmic reticulum, is uniquely eukaryotic and is not shared with either bacteria or archaea. - It has been hypothesized that the first eukaryotic cell is a chimera between a bacterium and an archaeon. - During phylogenetic reconstruction, it is often found that eukaryotic genes that are responsible for information processing are more closely related to corresponding archaeal genes than to bacterial genes. - All of the abovearrow_forwardWhat is the most logical theory on the topic of the Origin of Life?arrow_forwardHow does the process of evolution drives the diversity and unity of life? Explain the question briefly.arrow_forward
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