DNA sequence data for diplomonad, euglenozoan, a plant and an unidentified protist suggest that the unidentified species is mostly closely related to the diplomonad. Further studies reveal that the unknown species has fully functional mitochondria. Based on these data, at what point on the Phylogenetic tree given in Figure 25.9 “Exploring Eukaryotic Diversity”, in the textbook, did the mystery protists lineage probably diverge from other eukaryotic lineages. Introduction: The diplomonads are the group of flagella containing organisms and are mostly parasitic in nature. They are placed under zooflagellates within kingdom protista. Euglenozoa are unicellular large group of flagellate excavate that include free living species.

Question

1. 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 &

Answer 1

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 25.3, Problem 3CC

Summary Introduction

To explain:

DNA sequence data for diplomonad, euglenozoan, a plant and an unidentified protist suggest that the unidentified species is mostly closely related to the diplomonad. Further studies reveal that the unknown species has fully functional mitochondria. Based on these data, at what point on the Phylogenetic tree given in Figure 25.9 “Exploring Eukaryotic Diversity”, in the textbook, did the mystery protists lineage probably diverge from other eukaryotic lineages.

Introduction:

The diplomonads are the group of flagella containing organisms and are mostly parasitic in nature. They are placed under zooflagellates within kingdom protista. Euglenozoa are unicellular large group of flagellate excavate that include free living species.

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1. 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 &

Algae are autotrophs and can have photosynthesis, however, evolutionary evidence suggests that plants shared a common ancestor with only green algae and are closest relatives of Charophytes. What evidences support this statement? How an algal cell is different from fungal cells, even if both are eukaryotes? Why slime mold is a protist not a fungus even if it does not have chloroplast?

Eukaryotic cells can be detected at latest mid-way through the Proterozoic, and multicellular eukaryotes not long after – but there is a curious lag before the radiation of multicellular eukaryotic groups. We discussed two possible reasons for this. Explain both. Why might an early arrival of lichens on land explain aspects of both of those possibilities?

Answer 2

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 25.3, Problem 3CC

Summary Introduction

To explain:

DNA sequence data for diplomonad, euglenozoan, a plant and an unidentified protist suggest that the unidentified species is mostly closely related to the diplomonad. Further studies reveal that the unknown species has fully functional mitochondria. Based on these data, at what point on the Phylogenetic tree given in Figure 25.9 “Exploring Eukaryotic Diversity”, in the textbook, did the mystery protists lineage probably diverge from other eukaryotic lineages.

Introduction:

The diplomonads are the group of flagella containing organisms and are mostly parasitic in nature. They are placed under zooflagellates within kingdom protista. Euglenozoa are unicellular large group of flagellate excavate that include free living species.

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Answer 3

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 25.3, Problem 3CC

Summary Introduction

To explain:

DNA sequence data for diplomonad, euglenozoan, a plant and an unidentified protist suggest that the unidentified species is mostly closely related to the diplomonad. Further studies reveal that the unknown species has fully functional mitochondria. Based on these data, at what point on the Phylogenetic tree given in Figure 25.9 “Exploring Eukaryotic Diversity”, in the textbook, did the mystery protists lineage probably diverge from other eukaryotic lineages.

Introduction:

The diplomonads are the group of flagella containing organisms and are mostly parasitic in nature. They are placed under zooflagellates within kingdom protista. Euglenozoa are unicellular large group of flagellate excavate that include free living species.

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Answer 4

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 25.3, Problem 3CC

Summary Introduction