Biology: Concepts and Investigations
4th Edition
ISBN: 9780078024207
Author: Mariëlle Hoefnagels Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 5, Problem 2PIT
2. How would you incorporate the Calvin cycle, rubisco, C3 plants, C4 plants, and CAM plants into this concept map?
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1: Photosynthesis
1. What are the main inputs (reactants) required for overall photosynthesis? Where are they used in
the individual process?
2. Why do plants require light to perform photosynthesis? What is the mechanism plans have to utilize
light energy in photosynthesis?
3. Which types of plants use the C4 cycle? Which types of plants utilize the Calvin Cycle?
4. Evolution led to the formation of Rubisco that is used by C3 plants to fix CO2. Why do you think that
it led to an enzyme that also binds to 02 (which causes photorespiration that isn't beneficial to the
plant)?
5. Explain what is meant by the statement:
"C4 plants separate C3 and C4 processes in space and CAM plants separate C3 and C4 processes in
time."
404 words
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7. The figure shows the effect of light on the rate of photosynthesis Based on
the graph, answer the following questions: (i) At which point(s) A, B or C in
the curve, light is a limiting factor? (ii) What could be the limiting factor/s in
region A? (iii) What do region C and D represent on the curve?
Light intensity
Rate of photosynthesis
8. Most plants open their stomata during the day when light is available for photosynthesis to
favor CO2 diffusion and then close them at night to conserve water. However, plants such as
the saguaro cactus (pictured) actually open their stomata at night to fix carbon and undergo
alternative photosynthetic reactions during the day instead of capturing sunlight for light-
dependent reactions. This is an adaptation to conserve water in desert climates. With this in
mind...
a. Do you think the air and soil surrounding the cactus is typically drier or wetter than the plant?
b. How would soil moisture impact water transport in the plant?
c. Why do you think cacti lack large green leaves found in plants that undergo more traditional
forms of photosynthesis?
Chapter 5 Solutions
Biology: Concepts and Investigations
Ch. 5.1 - What is photosynthesis? Describe the reactants and...Ch. 5.1 - Prob. 2MCCh. 5.1 - Prob. 3MCCh. 5.1 - Prob. 4MCCh. 5.1 - How did the origin of photosynthesis alter Earths...Ch. 5.2 - Prob. 1MCCh. 5.2 - Prob. 2MCCh. 5.2 - Prob. 3MCCh. 5.2 - How does the reaction center chlorophyll interact...Ch. 5.3 - Prob. 1MC
Ch. 5.3 - Prob. 2MCCh. 5.4 - Prob. 1MCCh. 5.4 - Prob. 2MCCh. 5.4 - Prob. 3MCCh. 5.4 - Prob. 4MCCh. 5.5 - What is the relationship between the light...Ch. 5.5 - Prob. 2MCCh. 5.6 - Why is the Calvin cycle also called the C3...Ch. 5.6 - Prob. 2MCCh. 5.6 - What conditions maximize photorespiration?Ch. 5.6 - Prob. 4MCCh. 5.6 - How is the CAM pathway similar to C4 metabolism,...Ch. 5.7 - Prob. 1MCCh. 5.7 - Prob. 2MCCh. 5 - Where does the energy come from to drive...Ch. 5 - Prob. 2MCQCh. 5 - Prob. 3MCQCh. 5 - The evolution of photosynthesis resulted in a. an...Ch. 5 - Prob. 5MCQCh. 5 - Prob. 6MCQCh. 5 - Prob. 7MCQCh. 5 - A plant that opens its stomata only at night is a...Ch. 5 - Imagine that multiple simultaneous volcanic...Ch. 5 - Prob. 2WIOCh. 5 - Prob. 3WIOCh. 5 - Would a plant grow belier in a room painted blue...Ch. 5 - Determine whether each of the following molecules...Ch. 5 - Of the many groups of photosynthetic bacteria,...Ch. 5 - Prob. 7WIOCh. 5 - Over the past decades, the CO2 concentration in...Ch. 5 - How does photosynthesis help compensate for...Ch. 5 - How is the CAM pathway adaptive in a desert...Ch. 5 - Explain how C4 photosynthesis is based on a...Ch. 5 - Explain why each of the following misconceptions...Ch. 5 - Prob. 1PITCh. 5 - 2. How would you incorporate the Calvin cycle,...Ch. 5 - Prob. 3PITCh. 5 - Prob. 4PITCh. 5 - Prob. 5PIT
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- Which of the following is a correct step in the light-dependent reactions of the Z system? a. Light is absorbed at P700, and electrons flow through a pathway to NADP+, the final acceptor of the linear pathway. b. Electrons flow from photosystem II to water. c. NADP+ is oxidized to NADPH as it accepts electrons. d. Water is degraded to activate P680. e. Electrons pass through a thylakoid membrane to create energy to pump H+ through the cytochrome complex.arrow_forwardHow are carbon fixation and the Calvin cycle different in C4 plants and CAM plants?arrow_forwardWhich of the following components is nor used by both plants and cyanobacteria to carry out photosynthesis? chloroplasts chlorophyll carbon dioxide waterarrow_forward
- How many molecules of carbon dioxide must enter the Calvin cycle for a plant to produce a sugar containing 12 carbon atoms? How many ATP and NADPH molecules would be required to make that molecule?arrow_forward10. Observe the graph on the right. If you had a hypothetical plant that only had a hypothetical photopigment with an absorption maximum at 585, which color light would produce the highest rate of photosynthesis? ltra Violet Blue 456-492 nm Green 492677 nm Yellow Orange 597-620 nm Red intra vielet red 400-455 nm 677-697 nm 620-700 nm nm 400 500 600 700 short wtength Ieng vetength high fmuency lawhumcyarrow_forward17arrow_forward
- please choose correct letter and explain why you choose it 1. As a percentage of the flora, in which of the following geographic locations would the highest percentage of C3 plants be expected? a. Canada b. Brazil c. Colombia d. Venezuela e. USA 2. Which of the following statements describes what cyclic and non-cyclic electron transport in chloroplasts have in common? a. They produce ATP. b. They produce NADPH. c. They both involve photosystem I and photosystem II. d. They produce both ATP and NADPH. e. They both use photosystem II only. 3. Which of the following statements describes what fluorescence and bioluminescence have in common? a. ATP provides the energy for both processes. b. Light provides the energy for both processes. c. Light is produced by a pigment in both processes. d. Both processes emit light. e. All of the abovearrow_forward1. Given the information in the provided graphs, which of the two plants (A and B) is a C3 plant and which is a C4 plant. 2. justify the choices you made by explaining how the light response curves and results of the contrasting temperature treatments are consistent with knowledge about each CO2 fixation pathwaysarrow_forward1. Which of the following statements is most accurate? a. The Calvin cycle is a repeating process that uses carbon dioxide, ATP, and NADPH molecules to allow the cell to produce one glucose molecule. b. Each turn of the Calvin cycle is designed to use a glucose molecule to produce RuBP, 3-PGA, 3-G3P, ATP and NADPH molecules. c. The Calvin cycle is a continuous process that utilizes rubisco molecules to produce RuBP molecules which can be directly converted to glucose molecules for long term energy storage. 2. How many glucose molecules are produced for every turn of the Calvin cycle? a. 0 b. 1 c. 2 d. 3 e. 6 f. 12arrow_forward
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