Campbell Biology Chapter 10 Test Bank

Skill: Application/Analysis Campbell's Biology, 9e (Reece et al.) Chapter 10 Photosynthesis Students find this chapter quite challenging. Fortunately, some of the key concepts, such as chemiosmosis and redox, were discussed previously in the chapter on respiration and fermentation. The new key concepts are light as energy, light absorption and energy conversion by pigments, and linear and cyclic electron flow. Students are challenged to identify the relationships between the light reactions and the Calvin cycle, as well as the adaptive significance of C4 and CAM pathways. Comparison and contrast between photosynthesis and respiration, the significance of photosynthesis to Earth history and evolution of life, and the role of photosynthesis in global carbon cycles and environmental change are important topics to engage students. Multiple-Choice Questions 1) If photosynthesizing green algae are provided with CO2 synthesized with heavy oxygen (18O), later analysis will show that all but one of the following compounds produced by the algae contain the 18O label. That one is A) 3-phosphoglycerate. B) glyceraldehyde 3-phosphate (G3P). C) glucose. D) ribulose bisphosphate (RuBP). E) O2. Answer: E Topic: Concept 10.1 Skill: Application/Analysis 2) Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle? A) CO2 and glucose B) H2O and O2 C) ADP, i, and NADP+ D) electrons and H+ E) ATP and NADPH Answer: E Topic: Concept 10.1 00:02 01:24 Skill: Knowledge/Comprehension 3) Photosynthesis is not responsible for A) oxygen in the atmosphere. B) the ozone layer. C) most of the organic carbon on Earth's surface. D) atmospheric CO2. E) fossil fuels. Answer: E Topic: Concept 10.1 Skill: Knowledge/Comprehension 4) Where does the Calvin cycle take place? A) stroma of the chloroplast B) thylakoid membrane C) cytoplasm surrounding the chloroplast D) interior of the thylakoid (thylakoid space) E) outer membrane of the chloroplast Answer: A Topic: Concept 10.1 Skill: Knowledge/Comprehension 5) In any ecosystem, terrestrial or aquatic, what group(s) is (are) always necessary? A) autotrophs and heterotrophs B) producers and primary consumers C) photosynthesizers D) autotrophs E) green plants Answer: D Topic: Concept 10.1 Skill: Synthesis/Evaluation 6) In autotrophic bacteria, where are the enzymes located that can carry on carbon fixation (reduction of carbon dioxide to carbohydrate)? A) in chloroplast membranes B) in chloroplast stroma C) in the cytosol D) in the nucleoid E) in the infolded plasma membrane Answer: C Topic: Concept 10.1 Skill: Application/Analysis 7) When oxygen is released as a result of photosynthesis, it is a direct by-product of A) reducing NADP+. B) splitting water molecules. C) chemiosmosis. D) the electron transfer system of photosystem I. E) the electron transfer system of photosystem II. Answer: B Topic: Concept 10.1 Skill: Knowledge/Comprehension 8) A plant has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are being absorbed by this pigment? A) red and yellow B) blue and violet C) green and yellow D) blue, green, and red E) green, blue, and yellow Answer: B Topic: Concept 10.2 Skill: Application/Analysis 9) Halobacterium has a photosynthetic membrane that is colored purple. Its photosynthetic action spectrum is exactly complementary (opposite to) the action spectrum for green plants. What wavelengths of light do the Halobacterium photosynthetic pigments absorb? A) red and yellow B) blue, green, and red C) green and yellow D) red and green E) blue and red Answer: E Topic: Concept 10.2 Skill: Synthesis/Evaluation 10) In the thylakoid membranes, what is the main role of the antenna pigment molecules? A) split water and release oxygen to the reaction-center chlorophyll B) harvest photons and transfer light energy to the reaction-center chlorophyll C) synthesize ATP from ADP and i D) transfer electrons to ferredoxin and then NADPH E) concentrate photons within the stroma Answer: B Topic: Concept 10.2