Brock Biology of Microorganisms, Books a la Carte Plus Mastering Microbiology with Pearson eText -- Access Card Package (15th Edition)
15th Edition
ISBN: 9780134603940
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
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Chapter 18.15, Problem 1CR
Green algae are common in aquatic environments and can be unicellular, filamentous, colonial, or multicellular. A unicellular green alga, Ostreococcus, has the smallest genome known for a phototrophic eukaryote, while the green alga Volvox is a model colonial phototroph.
Q What traits link green algae and plants?
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According to the endosymbiotic theory of the origin of eukaryotic cells, how did chloroplasts originate?
-by tertiary endosymbiosis
-through secondary endosymbiosis
-from the nuclear envelope folding outward and forming mitochondrial membranes
-from infoldings of the plasma membrane, coupled with mutations of genes for oxygen-using metabolism
-through primary endosymbiosis
Alternation of generations means
-One phase of the life cycle is photosynthetic and the other is heterotrophic.
-One phase of the life cycle is unicellular and the other is multicellular.
-One phase of the life cycle takes place on land and the other in water.
-One phase of the life cycle is multicellular diploid and the other is multicellular haploid.
-One phase of the life cycle is motile and the other is stationary.
Briefly describe what endosymbiotic theory is. Describe a few ways in which endosymbiotic theory has changed the way scientists think about the ancestral distinctions among the three domains.
Chapter 18 Solutions
Brock Biology of Microorganisms, Books a la Carte Plus Mastering Microbiology with Pearson eText -- Access Card Package (15th Edition)
Ch. 18.1 - Prob. 1MQCh. 18.1 - Prob. 2MQCh. 18.1 - Prob. 3MQCh. 18.1 - Prob. 1CRCh. 18.2 - Prob. 1MQCh. 18.2 - Prob. 2MQCh. 18.2 - Prob. 3MQCh. 18.2 - Ribosomal RNA gene sequences do not yield as...Ch. 18.3 - Contrast the two nutritional options for Euglena.Ch. 18.3 - Prob. 2MQ
Ch. 18.3 - Prob. 3MQCh. 18.3 - Prob. 1CRCh. 18.4 - Prob. 1MQCh. 18.4 - Prob. 2MQCh. 18.4 - What are apicoplasts, which organisms have them,...Ch. 18.4 - Three groups make up the alveolates: ciliates,...Ch. 18.5 - Prob. 1MQCh. 18.5 - Prob. 2MQCh. 18.5 - Prob. 3MQCh. 18.5 - Prob. 1CRCh. 18.6 - Prob. 1MQCh. 18.6 - How are chlorarachniophytes thought to have...Ch. 18.6 - The Rhizaria include diverse protists such as the...Ch. 18.7 - Prob. 1MQCh. 18.7 - Compare and contrast the lifestyles of gymnamoebas...Ch. 18.7 - Prob. 3MQCh. 18.7 - Prob. 1CRCh. 18.8 - What are conidia? How does a conidium differ from...Ch. 18.8 - Prob. 2MQCh. 18.8 - Prob. 3MQCh. 18.8 - Prob. 1CRCh. 18.9 - Why is the mold Penicillium economically...Ch. 18.9 - Prob. 2MQCh. 18.9 - Prob. 3MQCh. 18.9 - Prob. 1CRCh. 18.10 - Prob. 1MQCh. 18.10 - Prob. 2MQCh. 18.10 - Prob. 1CRCh. 18.11 - Prob. 1MQCh. 18.11 - Prob. 2MQCh. 18.11 - Prob. 1CRCh. 18.12 - Prob. 1MQCh. 18.12 - Prob. 2MQCh. 18.12 - Prob. 1CRCh. 18.13 - Prob. 1MQCh. 18.13 - Prob. 2MQCh. 18.13 - Prob. 1CRCh. 18.14 - What traits link cyanobacteria and red algae?Ch. 18.14 - Prob. 2MQCh. 18.14 - Prob. 1CRCh. 18.15 - What phototrophic properties link green algae and...Ch. 18.15 - What is unusual about the green algae...Ch. 18.15 - Prob. 3MQCh. 18.15 - Green algae are common in aquatic environments and...Ch. 18 - Explain why the process of endosymbiosis can be...Ch. 18 - Summarize the evidence for endosymbiosis. How...Ch. 18 - Prob. 3AQ
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- Explain why evolutionary biologists are interested in choanoflagellates, green algae, and organisms with mitochondria whose genomes resemble those of bacteriaarrow_forwardPlants in Clade Streptophyta and the green algae share a number of common traits, except for which choice? -both have cellulose in their cell walls. -both are multicellular -both are autotrophic. -both have apical meristems -both have chlorophyll a and b.arrow_forwardBased on the morphology of Opalina and Volvox, which supports the syncytial hypothesis and colonial hypothesis of animal origin? please explain well and do not copy from googlearrow_forward
- DNA sequence data for a diplomonad, a euglenid, a plant, and an unidentified protist suggest that the unidentified species is most 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 in Figure 1 did the mystery protist’s lineage probably diverge from other eukaryote lineages? Explain.arrow_forwardAlternation of generations describes which of the following? a. The haploid form can be multicellular; the diploid form is unicellular. b. The haploid form is unicellular; the diploid form can be multicellular. c. Both the haploid and diploid forms can be multicellular. d. Neither the haploid nor the diploid forms can be multicellular.arrow_forwardMany fungi produce chemicals that inhibit bacterial growth. Why might the genes encoding these chemicals be adaptive to fungi?arrow_forward
- The concept of endosymbiosis as applied to chloroplast and mitochondria found in eukaryotes: a) is based on evidence that Chloroplasts and Mitochondria were originally prokaryotes, b) changes present day animals into plants, c) explains how chemical evolution caused the appearance of life, d) allowed chloroplasts to carry out aerobic metabolism, e) all are true.arrow_forward1. Prokaryotes have more DNA than eukaryotes. TRUE or FALSE 2. Cnidaria have two tissue layers, epidermis and ectodermis. TRUE or FALSE 3. Mosses have true, vascularized roots and leaves. TRUE or FALSE 4. DNA transcription occurs at the ribosome in eukaryotic cells. TRUE or FALSEarrow_forwardLesson: Perpetuation of Life Give at least five examples of genetic engineered plants/animals. a. b. c. d. e. Give at least 2 examples of the following: Fission- - Budding- - Fragmentation- - 3. Give at least 4 examples of plants which can do Vegetative Reproduction. a. b. c. d.arrow_forward
- As with plant adaptations againstherbivores, other biological processes can involve multiple levelsof biological organization (Figure 1.3). Discuss examples ofspecialized photosynthetic adaptations involving modificationsat the molecular (Concept 10.4), tissue (Concept 36.4), andorganismal (Concept 36.1) levels.arrow_forwardThe morphology of mistletoe mitochondria was suggestive of a loss of function that is not observed in non-parasitic plants. Specifically, the mitochondria of mistletoe as viewed with transmission electron microscopy are deficient in [_________] and devoid of [_____________]. A. Cristae, phospholipid membranes B. Organelle double membrane, Complex 1 C. Cristae, Complex 1 D. Cristae, ribosomesarrow_forwardEndosymbioses that lead to the evolution of euglenoids and, separately, the evolution of chlorarachniophytes were the result of the combining of: a. two ancestral nonphotosynthetic prokaryotes. b. two ancestral photosynthetic prokaryotes. c. a nonphotosynthetic eukaryote with a photosyntheticeukaryote. d. a photosynthetic prokaryote with a nonphotosyntheticeukaryote. e. mitochondria with an already established plastid.arrow_forward
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