Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 28.5, Problem 3CC
Summary Introduction
To determine: A eukaryotic phylogenetic tree which indicates that the tree's root would lie between a clade of excavates, unikonts, and various other eukaryotes.
Concept introduction: A phylogenetic tree basically depicts the extinction and branching of species and their ancestors through time. In the biology of evolution, "relationship" is a word that has a specific meaning and is a key for using and understanding the 'Tree of Life'. Phylogenetic trees are the evolutionary trees that come with various successive events of branching (
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make a drawing of a phylogenetic tree that contains all 3 domains of life. The tree should include at least
three different animals, two plants, chemoheterotrophic bacteria, photoautotrophic bacteria,
chemoheterotrophic archaea, thermophilic archaea and fungi. Identify both primary endosymbiosis events
on the tree and draw a line to connect it to the organism that would become the future organelle.
This chapter shows a phylogenetic tree for the three domains of life, which is based on DNA sequence data for rRNA and other genes. Which of the following answers concerning the phylogenetic relationships found within this tree is incorrect?
View Available Hint(s)for Part A
Euryarcheotes are found in the Archaea
Diatoms, Tubulinids, and Euglenozoans belong to the domain Eukarya
Forams, Fungi, and Chlamydias belong to the domain Eukarya.
Spirochetes belong to the domain Bacteria
Ciliates, Red Algae, and Plants belong to the domain Eukarya.
The universal phylogenetic tree of life shows the divergence of Bacteria, Archaea, and Eukarya. Studies of Lokiarchaeota help
to elucidate these relationships, but the first universal tree of life was constructed by Carl Woese using ribosomal RNA
sequences. There are advantages to using different types of nucleic acid for different types of analyses.
What is a specific advantage of using small subunit ribosomal RNA (SSU rRNA) gene sequences for phylogenetic
analysis compared with DNA sequences?
▸ View Available Hint(s)
SSU rRNA sequences accumulate mutations more rapidly than protein-encoding DNA.
SSU rRNA is frequently transferred through horizontal gene transfer, whereas DNA sequences are not.
Primers are required in DNA sequence analysis, but not for SSU rRNA sequence analysis.
Although PCR products can be visualized with SSU rRNA, this is not the case with other forms of nucleic acids.
DNA sequences are too highly conserved to work well for sequence analysis; individual species are…
Chapter 28 Solutions
Campbell Biology: Custom Edition
Ch. 28.1 - Cite at least four examples of structural and...Ch. 28.1 - Summarize the role of endosymbiosis in eukaryotic...Ch. 28.1 - Prob. 3CCCh. 28.2 - Why do some biologists describe the mitochondria...Ch. 28.2 - WHAT IF? DNA sequence data for a diplomonad, a...Ch. 28.3 - Explain why forams have such a well-preserved...Ch. 28.3 - WHAT IF? Would you expect the plastid DNA of...Ch. 28.3 - Prob. 3CCCh. 28.3 - Prob. 4CCCh. 28.4 - Contrast red algae and brown algae.
Ch. 28.4 - Why is it accurate to say that Ulva is truly...Ch. 28.4 - Prob. 3CCCh. 28.5 - Contrast the pseudopodia of amoebozoans and...Ch. 28.5 - Prob. 2CCCh. 28.5 - Prob. 3CCCh. 28.6 - Justify the claim that photosynthetic protists are...Ch. 28.6 - Prob. 2CCCh. 28.6 - WHAT IF? High water temperatures and pollution...Ch. 28.6 - MAKE CONNECTIONS The bacterium Wolbachia is a...Ch. 28 - Describe similarities and differences between...Ch. 28 - What evidence indicates that the excavates form a...Ch. 28 - Prob. 28.3CRCh. 28 - On what basis do systematists place plants in the...Ch. 28 - Describe a key feature for each of the main...Ch. 28 - Prob. 28.6CRCh. 28 - Plastids that are Surrounded by more than two...Ch. 28 - Biologists think that endosymbiosis gave rise to...Ch. 28 - Prob. 3TYUCh. 28 - According to the phylogeny presented in this...Ch. 28 - In a life cycle with alternation of generations,...Ch. 28 - Based on the phylogenetic tree in Figure 28.2,...Ch. 28 - Prob. 7TYUCh. 28 - SCIENTIFIC INQUIRY Applying the If then logic of...Ch. 28 - WRITE ABOUT A THEME: INTERACTIONS Organisms...Ch. 28 - SYNTHESIZE YOUR KNOWLEDGE This micrograph show's a...
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- What data might make you conclude that the eukaryotes should be in more than one domain? What domain would you hypothesize might be required?arrow_forwardWhich 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 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
- What are the lineages of the tree of life that we divide into prokaryotes vs. eukaryotes and how are they similar/different?arrow_forward1) Name and give a brief account of the theory that explains the evolution of Eukaryotic cells from Prokaryotic cells. 2) Explain the reactions that occur to form polysaccharides, using starch as an example. 3) What do enzymes do? What are their main structural features? Give an example of a biological enzyme. 4) Describe the structure of fats and lipids. Why are some solid at room temperature whereas others, particularly from plants, are liquid? Briefly describe the structure of an animal cell. What are the main differences between animal and plant cells? Briefly outline the steps involved in the synthesis of ATP in eukaryotic cellsarrow_forwardEukaryotes are sometimes termed nature’s master builders. Why is this a more apt description for members of the Eukaryotic branch tree of life than Prokaryotic branches life?arrow_forward
- Provide a substantial theory regarding how eukaryoticcells originated and how multicellularity came to be.arrow_forwardfor multicellularity; what would be an example of a eukaryote that has simple multicellularity, complex multicellularity, or is coenocytic and what eukaryotic supergroup would it belongs to.arrow_forwardExplain in which domain you would classify an organism that consists of a single cell with a nucleus.arrow_forward
- Does the following phylogenetic tree provide evidence to support or refute the endosymbiosis hypothesis? Briefly explain your choice (1-2 sentences) Bacteria a-Proteobacteria Mitochondria Archaea Eukarya Excavata Discicristata Alveolata Stramenopila Rhizaria Plantae Opisthokonta Amoebozoaarrow_forward1. How do members of Eukarya differ from the prokaryotic groups of Chp 26 (your text lists 4 major differences)? Do these differences represent a greater success and superiority of eukaryotic over prokaryotic cells? 2. Examine Figure 27.1 from your text. How does this phylogenetic tree show that "Protists" are paraphyletic? Hint: think about what the term "paraphyletic" means in your answer.. 3. Describe at least two impacts that protists have on humans and two ecological importance's protists have on the planet. 4. What is direct sequencing and how has it been used to discover new lineages in the eukaryotic group? Be specific! 5. What is the endosymbiosis theory and what are thought to have been the three main steps in the theory? What are thought to have been the two main steps in the nucleus formation? • Previous Next MacBook Pro G Search or type URL 23 %24 &arrow_forwardIsoprene serves as a building block not only for the hydrocarbons observed in archaeal membranes but also for sterols, carotenoids, retinal, and quinones. Use any resources necessary to identify the function of these other isoprene-based molecules and to determine their distribution in nature. What does the use of isoprene to make this diverse array of molecules suggest about the nature of the last universal common ancestor (LUCA)?arrow_forward
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