12. Plants, fungi, and animals have evolved from ancestral: A. protists. B. endo
ID: 142476 • Letter: 1
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12. Plants, fungi, and animals have evolved from ancestral: A. protists. B. endosymbiotic bacteria. C. Archaea. D. cyanobacteria. E. inorganic molecules 13. Which of the following is true given current phylogenies? A. Plants contain chloroplasts but not mitochondria. B. No members of Eukarya contain both mitochondria and chloroplasts. C. Chloroplasts are found in bacteria. D. Mitochondria developed through endosymbiosis before chloroplasts. E. Mitochondria are found in bacteria. 14. Eukaryotes resemble prokaryotes in that both: A. contain nuclei. membranes. D. are multicellular. E. contain specialized cells B. have organelles. C. have plasma 15. Life arose on Earth approximately E. 4 billion years ago. A. 4000 B. 400,000 C. 4 million D. 1.5 billion 16. Which of the following correctly lists the order of important first events in the history of life? a. First archaea, chemical evolution, first chloroplasts, first nucleus, first cyanobacteria b. Chemical evolution, first archaea, first cyanobacteria, first nucleus, first chloroplasts C. Chemical evolution, first cyanobacteria, first archaea, first chloroplasts, first nucleus d. First cyanobacteria, first nucleus, first archaea, first chloroplasts, chemical evolution e. First cyanobacteria, chemical evolution, first archaea, first nucleus, first chloroplasts 17. Which of the following characteristics of eukaryotes is related to their having flexible cell membranes? A. A nuclear membrane B. Endosymbiosis of mitochondria C. Endocytosis D. Both b and c E. All of the above 18. Which of the following is not a requirement for the evolution of complex multicelluarity? A. cell adhesion B. Cell-Cell Communication. C. Coordination. D. Programmed Cell Death E. All of the above are requirements of multicellularity 19. The overall size that unicellular microbial eukaryotes can achieve is limited by their A. energy-producing potential. B. nuclear volume. C. mitochondria. D. surface area-to-volume ratio. E. Both a and b 20. When ancestral photosynthetic euglenids obtained their chloroplasts, the result was a chloroplast surrounded by three membranes. This is evidence of acquisition of the chloroplast by A. primary endosymbiosis. B. secondary endosymbiosis, retaining the chloroplast from a green alga C. secondary endosymbiosis, retaining the chloroplast from a plant. D. tertiary endosymbiosis. E. None of the above 21. Which of the following statements about protists is false? A. Most protists are found in terrestrial habitats. B. Protists have many different metabolic lifestyles. C. Protists use pseudopods, cilia, or flagella to locomote. D. Several groups of protists use contractile vacuoles to rid themselves of excess water. E. All of the above are true; none is false 22. Apicomplexans A. are parasites. B. have complex life cycles. C. have an apical organelle that helps enter hosts. D. All of the above 23. You are examining a saltwater sample and see a single-celled organism with a cell wall constructed of two pieces. The top piece overlaps the bottom piece. The cell wall is impregnated with silica and has an intricate pattern. You are most likely looking at a A. red alga. B. radiolarian. C. diatom. D. euglenid E. dinoflagellateExplanation / Answer
12 OPTION A PROTISTS are ancestor of Plants, Fngai and Animals
13. OPTION D
mitochondria must have developed early in the history of eukaryotes, because all eukaryotes have them. Then, a similar event brought chloroplasts into some eukaryotic cells thus creating the lineage that led to plants
14 option C
ALL CELLS HAVE PLASMA MEMBRANE (BOTH EUKARYOTIC and PROKARYOTIC)
15 option E
4 BILLION YEARS AGO
16. OPTION B
17 OPTION D
flexible cell membrane facilitates movement of molecules from one side to another side, both endocytosis and endoccymbiosis of mitochondria can be related to this
18 OPTION E all the above are requirments
19 OPTION D
SURFACE AREA TO VOLUME RATIO
20. OPTION C
21 OPTION E all are true,
22 OPTION D all are true,
2 3 OPTION C
A unique feature of diatom cells is that they are enclosed within a cell wall made of silica HICH IS KNOWN AS FRUSTULE.
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