Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 21, Problem 6SQ
Summary Introduction
Introduction: Most of the protists have a chloroplast. Primary endosymbiosis results in the evolution of the first chloroplast. Chloroplast has evolved from other protists by the secondary endosymbiosis. The initial chloroplasts have two membranes, and the chloroplasts that are evolved through the secondary endosymbiosis process consist of four membranes. Green algae have the chloroplast that contains both chlorophyll a and chlorophyll b.
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Chapter 21 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 21 - Summoning Moaquitoes Parasites sometimes alter...Ch. 21 - Prob. 2DAACh. 21 - Prob. 3DAACh. 21 - Prob. 4DAACh. 21 - Prob. 1SQCh. 21 - Diplomonads, and parabasalids lack _______. a. a...Ch. 21 - Radiolaria and diatoms have a shell of _______. a....Ch. 21 - Prob. 4SQCh. 21 - Diatoms produce _______ that help(s) them float....Ch. 21 - Prob. 6SQ
Ch. 21 - ______ are members or the phytoplankton. a. Water...Ch. 21 - Prob. 8SQCh. 21 - Prob. 9SQCh. 21 - Prob. 10SQCh. 21 - Prob. 11SQCh. 21 - Prob. 12SQCh. 21 - Prob. 13SQCh. 21 - Prob. 14SQCh. 21 - Prob. 15SQCh. 21 - Which groups or protists would you be most likely...Ch. 21 - Apicomplexans evolved from a photosynthetic...Ch. 21 - Diplomonads have neither mitochondria nor...
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- Mitochondria likely originated froma. archaea.b. invaginations of the cell membrane.c. bacteria.d. chloroplastsarrow_forwardPlastids that are surrounded by more than twomembranes are evidence of(A) evolution from mitochondria.(B) fusion of plastids.(C) origin of the plastids from archaea.(D) secondary endosymbiosis.arrow_forwardPhotosynthesis carried out by one group of ________ resulted in Earths first increase in atmospheric oxygen levels. a. archaea c. protists b. bacteria d. algaearrow_forward
- The first forms of life on Earth were thought to be_____. a. single-celled plants b. prokaryotes c. insects d. large animals such as dinosaursarrow_forwardThe endosymbiotic theory explains the:a. origin of the first prokaryotic cells.b. origins of mitochondria and chloroplasts in eukaryotes.c. evolutionary relationship between animals, plants, and fungi.d. method of reproduction in protists.arrow_forwardIt is thought that the mitochondria and chloroplasts of eukaryotic cells came froma. the development of the internal membrane system.b. protists.c. mutation.d. endosymbiosis of bacteriaarrow_forward
- Which of the evolutionary sequences below does NOT represent how chloroplasts were derived? A.cyanobacteria → red algae →brown algae B.cyanobacteria → green algae → land plants C. cyanobacteria → green algae → fungi → land plants D. cyanobacteria → green algae → red algaearrow_forwardThe first organisms that oxygenated the atmosphere were ______. a. cyanobacteria b. phootrophic organisms c. anaerobic organisms d. allof the abovearrow_forwardThe 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_forward
- Mitochondria in protists originated froma. cyanobacteria.b. chloroplasts.c. anaerobic bacteria.d. aerobic bacteria.e. eukaryotic cells.arrow_forwardWhich of the following extremophiles is the best model for the earliest organisms on Earth? A. a prokaryote found near hydrothermal vents B. an archaean capable of surviving in the polar ice caps C. an anaerobic archaean species D. a bacterium that thrives in a highly acidic environmentarrow_forwardBacteria are similar to archaea in that theya. arose through endosymbiosis.b. are multicellular.c. live in extreme environments.d. are prokaryotes.arrow_forward
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