Exam2 Biology

Exam2 Biology - 1 MARTHA HUNTER/DANIEL PAPAJ/KEVIN BONINE...

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1 M ARTHA H UNTER / /D ANIEL P APAJ /K EVIN BONINE EXAM TWO March 6, 2008 LECTURE SECTION: TTH 11:00 AM – 12:15 PM PRINT UA NetID: LAST NAME:_______________________________________________________ GENERAL INSTRUCTIONS PRINT your UA NetID and last name above AND on the answer sheet. Color in the answers in the appropriate circles on the answer sheet. Use a Number 2 Pencil, not a pen! Bubble darkly, so the letter can no longer be seen in the circle. 1. The first life on Earth consisted of a. single-celled, aerobic autotrophs. b. single-celled, anaerobic autotrophs. c. single-celled, aerobic heterotrophs. d. multicellular aerobic autotrophs. e. single-celled, anaerobic heterotrophs. 2. Bacteria and Archaea represent two of the a. the three kingdoms. b. the three domains. c. five kingdoms. d. five domains. 3. The first autotrophs on Earth were a. Proteobacteria. b. Archaea. c. Cyanobacteria. d. Diatoms. 4. The ozone shield a. is formed from methane and light energy. b. protects life on land from falling meteors. c. started to form once there was an abundance of nitrogen in the atmosphere. d. protects life on land from harmful ultraviolet radiation.
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2 5. The most closely related lineage to the Archaea is the a. Bacteria. b. Eukarya. 6. The cell walls of Archaea contain (1)_______, while the cell walls of Bacteria contain (2)___________. a. (1) cellulose, (2) proteins b. (1) proteins, (2) peptidoglycan c. (1) peptidoglycan, (2) proteins d. (1) amino sugars, (2) cellulose 7. Which of the following are not present in all eukaryotic cells? a. a cytoskeleton b. a nuclear envelope c. a cell wall d. membrane-bound organelles 8. To biologists, symbiosis is a. a close mutualistic relationship that benefits both species that participate. b. a close parasitic relationship that benefits one species and harms the other. c. a close association between two species that may be parasitic, mutualistic, or commensal. 9. Prokaryotes that use light for energy, and ingest organic compounds for carbon are called a. photoautotrophs. b. photoheterotrophs. c. chemolithotrophs. d. chemoheterotrophs. 10. Protists are a. a single evolutionary lineage. b. all single-celled eukaryotes. c. all autotrophs. d. all eukaryotes that are not animals, plants or fungi. 11. Your friend brings you a photosynthetic eukaryote to identify. She says she found it in a swamp. It is small, has a larger gametophyte stage than sporophyte stage, and it lacks tracheids. You suggest that it could be a a. club moss. b. moss. c. Gymnosperm. d. Angiosperm. e. Pteridophyte.
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3 12. Which of the following is thought to have been most important for nutrient uptake by early land plants? a. an association with nitrogen fixing bacteria.
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Exam2 Biology - 1 MARTHA HUNTER/DANIEL PAPAJ/KEVIN BONINE...

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