CAMPBELL BIOLOGY-W/MOD.MASTERBIOLOGY
11th Edition
ISBN: 9780134683461
Author: Urry
Publisher: PEARSON
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Chapter 10, Problem 11TYU
WRITE ABOUT A THEME: ENERGY AND MATTER Life is solar powered. Almost all the producers of the biosphere depend on energy from the sun to produce the organic molecules that supply the energy and carbon skeletons needed for life. In a short essay (100–150 words), describe how the process of photosynthesis in the chloroplasts of plants transforms the energy of sunlight into the chemical energy of sugar molecules.
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Cells are open systems that exchange matter and energy with their surroundings. Which of the following best explains why plant cells require sunlight to make organic compounds, according to Gibbs’s theory of free energy?
The photosynthetic reaction releases free energy to the surroundings.
The photosynthetic reaction’s free energy is in equilibrium.
The reactants of photosynthesis have less free energy than the products.
The change in free energy (∆G) of the photosynthetic system is less than zero.
Consider the relationship between temperature and photosynthesis. As temperatures increase,gases such as CO2 diffuse faster. As a result, plant leaves will lose CO2 at a faster rate thannormal. If the amount of light reaching the leaf and the amount of water available are adequate,predict how this loss of gas will affect photosynthesis in the leaf.
Chloroplasts contain chlorophyll and carotenoids. Chlorophyll directly absorbs light for use in photosynthesis. Carotenoids absorb light and transfer the energy from light to chlorophyll. The efficiency of photosynthesis varies with the wavelengths of the light that illuminates the chloroplasts. In an experiment to study the relationship between the incoming light wavelengths and the chemical reactions of photosynthesis using a species of green algae, a researcher labeled the CO2 supply to the algae with 14C, and the H2O with 18O.
Which of the following results is expected?
More 14C is found in the algae when it is illuminated by green light than when it is illuminated by blue-violet and red light.
More 18O is found in the algae when it is illuminated by green light than when it is illuminated by blue-violet and red light.
More 14C is found in the algae when it is illuminated by blue-violet and red light than when it is illuminated by green light.
More 18O is found in the algae when…
Chapter 10 Solutions
CAMPBELL BIOLOGY-W/MOD.MASTERBIOLOGY
Ch. 10.1 - Prob. 1CCCh. 10.1 - Explain how the use of an oxygen isotope helped...Ch. 10.1 - WHAT IF? The Calvin cycle requires ATP and NADPH,...Ch. 10.2 - What color of light is least effective in driving...Ch. 10.2 - In the light reactions, what is the initial...Ch. 10.2 - Prob. 3CCCh. 10.3 - To synthesize one glucose molecule, the Calvin...Ch. 10.3 - How are the large numbers of ATP and NADPH...Ch. 10.3 - Prob. 3CCCh. 10.3 - DRAW IT Redraw the cycle in Figure 10.19 using...
Ch. 10.3 - Prob. 5CCCh. 10.4 - Describe how photorespiration lowers...Ch. 10.4 - The presence of only PS I, not PS II, in the...Ch. 10.4 - MAKE CONNECTIONS Refer to the discussion of ocean...Ch. 10.4 - WHAT IF? How would you expect the relative...Ch. 10.5 - MAKE CONNECTIONS Can plants use the sugar they...Ch. 10 - Compare the roles of CO2 and H2O in cellular...Ch. 10 - The absorption spectrum of chlorophyll a differs...Ch. 10 - Prob. 10.3CRCh. 10 - Why are C4 and CAM photosynthesis more...Ch. 10 - Explain how all life depends on photosynthsis.Ch. 10 - The light reactions of photosynthesis supply the...Ch. 10 - Which of the following sequences correctly...Ch. 10 - How is photosynthesis similar in C4 plants and CAM...Ch. 10 - Prob. 4TYUCh. 10 - Prob. 5TYUCh. 10 - In mechanism, photophosphorylation is most similar...Ch. 10 - Prob. 7TYUCh. 10 - Prob. 8TYUCh. 10 - EVOLUTION CONNECTION Photorespiration can decrease...Ch. 10 - SCIENTIFIC INQUIRY MAKE CONNECTIONS The following...Ch. 10 - WRITE ABOUT A THEME: ENERGY AND MATTER Life is...Ch. 10 - SYNTHESIZE YOUR KNOWLEDGE Watennelon snow in...
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- The process of photosynthesis can be modeled in various ways. For example, a chemical equation is one way to represent photosynthesis. 6CO, + 6H,0 ++ +→ 60, + C,H,,O,arrow_forwardUse the data to create a graph in Excel. It should be a scatter plot with a line connecting each point. Looking at the graph: a/ Which wavelengths absorbed most by spinach and likely used for photosynthesis? b/ Which wavelengths are absorbed least?arrow_forwardA botanist has been examining three plants, measuring the amount of acid in their cells and examining sections of their leaves under the microscope. Numbers in the table are in relative units. Plant Acid, day Acid, night Has wreath anatomy? FADH2 Ethanol A 20 250 No 0 50 B 10 10 No 100 1 C 200 10 Yes 100 1 Part A: Identify the kind of photosynthesis being done by each plant. Explain how enzymes contribute to this data. Part B: Decipher the origin of each plant if one is from the Mojave Desert, one is from a sand dune in Florida, and one is from Minnesota, and explain how you deciphered this.arrow_forward
- Adjusting the wavelength of light and increasing the temperature can increase the rate of photosynthesis. Using specifics, describe in detail the effect of wavelength and temperature on photosynthesis and why or how these 2 factors affect the creation of the molecules used in or produced by photosynthesis.arrow_forwardDraw a diagram of the dark phase of photosynthesis. You must represent this phase in the form of a cycle indicating the parts of carboxylation, reduction, generation of hexoses and regeneration. Ribulose, CO2, rubisco, phosphoglycerate (PGA), bisphosphoglycerate, phosphoglyceraldehyde (PGAL), ATP, ADP, NADPH, NADP, kinase, fructose, and glucose should appear.arrow_forwardThree plants grow side by side in a pond. Glucose and starch are measured for each and shown in relative units below, along with the pH of the vacuole at dawn and at noon. Plant Glucose Starch Vacuolar pH, dawn Vacuolar pH, noon A 100 50 1 4 B 100 10 4 4 C 1,000 2 4 4 Part A:Explain what kind of photosynthesis is being done by each plant with some details about how each works. Justify your answer. Part B:Decipher which plant is biochemically defective after the light-independent reactions and explain how you deciphered this.arrow_forward
- A botanist has been examining three plants, measuring the amount of acid in their cells and examining sections of their leaves under the microscope. Numbers in the table are in relative units. Has wreath Plant Acid, day Acid, night FADH2 Ethanol anatomy? A 20 250 No 50 10 10 No 100 1 C 200 10 Yes 100 1 Part A: Identify the kind of photosynthesis being done by each plant. Explain how enzymes contribute to this data. Part B: Decipher the origin of each plant if one is from the Mojave Desert, one is from a sand dune in Florida, and one is from Minnesota, and explain how you deciphered this. BIU E E nswered 13 tv 吕0 F3 000 F2 F4arrow_forwardDiagram 3: Light Wave Absorption of Chlorophyll a and b. Chlorophyll a Chlorophyll b 400 450 500 550 600 650 700 Wavelength (nm) Plant chlorophyll chemicals will absorb, or take in, light wave energy in order to produce their own organic molecules used for cellular energy. Reflected light refers to those wavelengths of light that will "bounce off" of the chlorophyll and not be absorbed. Select the conclusion that most accurately summarizes the data in diagram 3. Red and blue light waves have equal importance during photosynthesis. The majority of light energy is attained from red light, while the blue light waves provide additional light energy to photosynthesis. The majority of light energy is attained from blue light, while the red light waves provide additional light energy to photosynthesis. Medium length light waves are important to photosynthesis Absorptionarrow_forwardCreate a model showing how photosynthesis works to turn sunlight into sugar. Be sure to label the following: Sun, chloroplast, light reactions, H2O, thylakoid, granum, O2, ATP, Calvin Cycle, H+ , CO2, stroma, sugar(glucose)arrow_forward
- During the light reactions of photosynthesis, pigments within the thylakoids membranes absorb solar energy, split water, and releasearrow_forwardA: ATP Cellular respiration Bwater and oxygen MITOCHONDRION (animal cell) CHLOROPLAST (plant cell Examine the model depicting the relationship between photosynthesis and cellular respiration. Select ALL of th choices that correctly pairs products and reactants with their place in the model. Photosynthesisarrow_forwardWRITE ABOUT A THEME: ENERGY AND MATTER Life issolar powered. Almost all the producers of the biospheredepend on energy from the sun to produce the organicmolecules that supply the energy and carbon skeletonsneeded for life. In a short essay (100–150 words), describehow the process of photosynthesis in the chloroplasts ofplants transforms the energy of sunlight into the chemicalenergy of sugar molecules.arrow_forward
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