Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 7, Problem 3FIB
Summary Introduction
Introduction: Photosynthesis is the process that produces glucose and oxygen from water and carbon dioxide in the presence of sunlight. The whole process is divided into two phases, namely, the light reactions and Calvin cycle.
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The light dependent reactions of photosynthesis serve to __________ while the light independent reactions serve to ______ .
The products of the light reactions of photosynthesis are ______.
ATP and NADH
RuBP and O2
ATP and NADP+
ATP and NADPH
When discussing why the rate of photosynthesis did not increase at higher light intensities, the investigator mentioned the possibility that high light intensities could damage chlorophyll, which would result in a decrease in oxygen production. Which of the following accurately explains the role of chlorophyll in oxygen production during photosynthesis and why damage to chlorophyll would results in lower oxygen production?
Select one or more:
a. Chlorophyll participates in carbon fixation during the Calvin Cycle. During this process, oxygen molecules are formed.
b. Chlorophyll captures energy from sunlight and releases high energy electrons that enter the electron transport chain in the Calvin Cycle. During this process, oxygen molecules are formed.
c. Chlorophyll participates in carbon fixation during the light reactions. During this process, oxygen molecules are formed.
d. Chlorophyll captures energy from sunlight and releases high energy electrons that enter the electron…
Chapter 7 Solutions
Biology
Ch. 7.1 - What chemical reactions allow plants to capture...Ch. 7.1 - explain why photosynthesis is important?Ch. 7.1 - diagram the structure of leaves and chloroplasts...Ch. 7.1 - write out and explain the basic equation for...Ch. 7.1 - summarize the main events of the light reactions...Ch. 7.2 - You continuously monitor the photosynthetic oxygen...Ch. 7.2 - Prob. 1HYEWCh. 7.2 - What reactions allow plants to store the...Ch. 7.2 - list the light capturing molecules in chloroplasts...Ch. 7.2 - diagram and describe the molecules within the...
Ch. 7.2 - Prob. 3CYLCh. 7.3 - Prob. 1TCCh. 7.3 - describe the function of the Calvin cycle and...Ch. 7.3 - list the three stages of the Calvin cycle,...Ch. 7.3 - describe the fate of the simple sugar G3P...Ch. 7.3 - Prob. 2TCCh. 7.3 - What global policy changes and what individual...Ch. 7 - Which of the following is True? a. Photosynthesis...Ch. 7 - The Calvin cycle a. can only occur when light is...Ch. 7 - Prob. 3MCCh. 7 - Prob. 4MCCh. 7 - Which of the following is False? a. Photosystem II...Ch. 7 - Prob. 1FIBCh. 7 - Chlorophyll a captures wavelengths of light that...Ch. 7 - Prob. 3FIBCh. 7 - Prob. 4FIBCh. 7 - Light reactions generate the energy-carrier...Ch. 7 - Explain what would happen to life if...Ch. 7 - Prob. 2RQCh. 7 - Draw a simplified diagram of a leaf cross-section...Ch. 7 - Draw a simplified diagram of a chloroplast and...Ch. 7 - Prob. 5RQCh. 7 - Prob. 6RQCh. 7 - Suppose an experiment is performed in which plant...Ch. 7 - Prob. 2ACCh. 7 - Assume you want to add an accessory pigment to the...
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- Which of the following substances does not participate in the Calvin-Benson cycle? a. ATP c. NADPH e. PGAL b. O2 d. RuBP f. CO2arrow_forwardMatch each term with its most suitable description. ____ PGAL formation a. absorbs light ____CO2 fixation b. converts light to chemical energy ____ autotroph c. self-feeder ____ ATP forms NADPH does not d. electrons cycle back to photosystem ____ photorespiration e. problem in C3 plants ____ photosynthesis f. Calvin-Benson cycle product ____ pigment g. water molecules split ____ photolysis in photosynthesis h. rubisco functionarrow_forwardWhat is the molecule that leaves the Calvin cycle to be converted into glucose? a. ADP b. G3P c. RuBP d. 3-PGAarrow_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_forwardWhich two products of the light-dependent reactions are used up in the Calvin cycle? Rubisco adds a CO2 molecule to a sugar that contains _______ carbons. The reaction product immediately splits into two sugars that each contain _______ carbons. O2 can compete with CO2 for a place in the rubisco active site. As a consequenceO2 is incorporated into RuBP instead of CO2. Why might this be a disadvantage?arrow_forwardThe chlorophyll in photosynthesis is used for: I. Absorbing light II. Breaking down water molecule III. No function IV. Reduction of CO2arrow_forward
- Place the following steps of the Light-Reactions of Photosynthesis in order. Production of NADPH Absorption of light Electron transport chain & Production of ATP Photosystem II Photosystem Iarrow_forwardThis molecule: • is present in our atmosphere • enters the leaf through pores called stomata • is converted into glucose in the Calvin cycle of photosynthesis._________?arrow_forwardWhich of the following statements is FALSE? Water is the ultimate electron donor. Photosystem II has chlorophylls in its reaction center that has maximum light absorption at 680 nm. Plastoquinone has a higher reduction potential than plastocyanin. Proton gradient is created in the light phase of photosynthesis wherein the pH in the stroma is higher than in the lumen.arrow_forward
- ATP is produced when protons (H+) flow down the gradient through the H+ channel/ATP synthase in the thylakoid membrane. A researcher discovers a drug that slows down the passage of protons through the H+ channel/ATP synthase. What is expected to happen if this drug is applied to the chloroplasts? The pH in the chloroplast stroma will increase, and less ATP will be produced. The pH in the chloroplast stroma will decrease, and less ATP will be produced. The pH in the chloroplast stroma will increase, and more ATP will be produced. The pH in the chloroplast stroma will decrease, and more ATP will be produced.arrow_forwardDuring light-generated photosynthesis reaction pH is lowered in 1. Thylakoid lumen 2. Thylakoid stroma 3. Chloroplast intermembrane space 4. Cytoplasmarrow_forwardIdentify the correct compound to create a chemical equation that represents Photosynthesis. + Drag and drop the right reactants and products of the Light Dependent and Light Independent (aka Dark) Reactions. Chloroplast NADPH NADP+ ADP Water - H20 Calvin Cycle Glucose - C6H1206 ATP Light Reaction Thylakoids Stroma O2 Carbon Dioxide CO2 Identify the reactants and products that are used and given off by plants and animals.arrow_forward
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