Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Textbook Question
Chapter 7, Problem 5FTB
In plants, the enzyme that catalyzes carbon capture is ___, which binds ____ as well as C02. When it binds the “wrong” molecule, this enzyme causes _____ to occur. Two pathways that reduce this process are called the ____ and the _____.
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Which of the following occurs during the carbon-fixation reactions of photosynthesis?
A. Water is converted into hydrogen and water.
B. CO2 is converted into sugars.
C. Chlorophyll acts as an enzyme.
D. Nothing occurs; the plant rests in the dark.
E. Glucose and oxygen are reduced to CO2 and water.
If plants need CO2 to construct glucose (by photosynthesis), why is the rising level of CO2 in the atmosphere cause for concern? You’d think more CO2 would accelerate plant growth, and that would be a good thing.
Which of the following are inputs to photosynthesis? Choose all that apply. Which are outputs? Choose all that apply. a. CO2 b. O2 c. sugar d. H2O e. light
Chapter 7 Solutions
Biology: Life on Earth
Ch. 7 - Plant leaves contain pores called _____ that allow...Ch. 7 - Chlorophyll a captures wavelengths of light that...Ch. 7 - 3. During the first stage of photosynthesis, light...Ch. 7 - The oxygen produced as a by-product of...Ch. 7 - 5. In plants, the enzyme that catalyzes carbon...Ch. 7 - Light reactions generate the energy-carrier...Ch. 7 - Prob. 1RQCh. 7 - Prob. 2RQCh. 7 - 3. Draw a simplified diagram of a leaf...Ch. 7 -
4. Draw a simplified diagram of a chloroplast and...
Ch. 7 - Explain photorespiration and why it occurs....Ch. 7 - Trace the flow of energy in chloroplasts from...Ch. 7 - 7. Summarize the events of the Calvin cycle. Where...Ch. 7 - Suppose an experiment is performed in which plant...Ch. 7 - You continuously monitor the photosynthetic oxygen...Ch. 7 - If you were to measure the pH in the space...Ch. 7 - 3. Assume you want to add an accessory pigment to...
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- Photosynthesis in some of the crops is efficient at this range of temperature a. 20°C - 30°C b. 25°C - 30°C c. 20°C - 25°C d. 20°C - 23°Carrow_forwardMatter is constantly cycled between living and non living parts of the environment. Processes like photosynthesis and respiration allow the carbon cycle to regenerate needed substances by recycling earth’s atoms. A diagram of the carbon cycle is shown. Each arrow represents a process in the cycle. Which explanation best describes the process in the cycle. Which explanation best describes the process that occurs at the arrow marked B? A) plants use carbon dioxide from the atmosphere in the process of photosynthesis to produce glucose B) plants release carbon dioxide into the atmosphere in the process of photosynthesis to produce glucose C) plants use carbon dioxide from the atmosphere in the process of cellular respiration to convert glucose to atp energy D) plants release carbon dioxide into the atmosphere in the process of cellular respiration to convert glucose to atp energyarrow_forwardA mature maple tree can have a mass of 1 ton or more of dry biomass (afterremoving the water), yet it starts from a seed that weighs less than 1 gram.The wood of a tree is composed mainly of cellulose, a polysaccharide. Explainthe huge increase in mass using what you know about the processes, inputs,and outputs of photosynthesis.arrow_forward
- During a La nifia event, the temperature of the Pacific Ocean near Central America becomes cooler than normal. As a result, more clouds form, and this can block sunlight from reaching plants in Central America forests. A researcher studying the effects of La nifia measured the amount of carbon dioxide ( CO,) uptake by tropical plants under different light intensities.The data are shown in the graph. Predict how a la nifia event effects the rate of photosynthesis by plants in the tropical forests of Central America. Provide evidence from the graph to support your prediction. Enter your answer in the box provided.arrow_forwardExplain the process of photosynthesis-related to the growth of the sunflower plant How could you control some of these factors to increase the farming potential and make farming more sustainable?arrow_forwardPhotosynthesis generally takes place in which parts of the plant? A. Leaf and other chloroplast bearing parts B. stem and leaf C. Roots and chloroplast bearing parts D. Bark and leafarrow_forward
- Which of the following statements is are TRUE? Ca pathway involves a single C02 fixation step. In CAM plants. stomata are open during day time. Chlorophyll pigments absorb maximum light in the green wavelength. Reaction center of PSI is P700arrow_forwardMost of the carbon that land plants use for photosynthesis comes from ______. a. glucose b. the atmosphere c. water d. soilarrow_forwardMost of the carbon that land plants use for photosynthesis comes from ________. a. sugars c. water b. the atmosphere d. soilarrow_forward
- Figure 8.18 Which of the following statements is true? In photosynthesis, oxygen, carbon dioxide, ATP, and NADPH are reactants. G3P and water are products. In photosynthesis, chlorophyll, water, and carbon dioxide are reactants. G3P and oxygen are products. In photosynthesis, water, carbon dioxide, ATP, and NADPH are reactants. RuBP and oxygen are products. In photosynthesis, water and carbon dioxide are reactants. G3P and oxygen are products.arrow_forwardIn C3 plants, _______ makes sugar production inefficient when stomata close on hot, dry days. a. photosynthesis c. photorespiration b. photolysis d. carbon fixationarrow_forwardWhich of the following resource(s) do plants need to survive (select all that apply): A. O2 for cellular respiration B. nitrogen and minerals as molecular building blocks C. Glucose for cellular respiration D. CO2 for photosynthesis E. H2O for structure and turgor pressurearrow_forward
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