Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 7.4, Problem 2TYK
Summary Introduction
Introduction:
The photosynthesis is required by the plant to harvest the light energy from the sunlight and convert the atmospheric carbon dioxide into a usable form of carbohydrates. The carbohydrate synthesized by the plant is glucose that is stored in the form of starch.
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C4 plants differ from C3 plants because C3 plants
while C4 plants
O gain CO2 via photorespiration; lose CO2 via photorespiration
have mesophyll cells that fix CO2 and contain the Calvin cycle; have mesophyll cells that fix CO2 and bundle sheath cells
that contain the Calvin cycle
concentrate CO2 near rubisco; cannot concentrate CO2 near rubisco
can concentrate the CO2 by regulating the stomata closure; can concentrate CO2 at night
produce a four-carbon intermediate after CO2 fixation; produce a three-carbon intermediate after CO2 fixation
Which of the following scenarios happens during the light-dependent reaction of photosynthesis?
Oxygen gas is produced in the thylakoid lumen by the oxidation of water by photosystem I.
Ferrodoxin and NADP+ reductase participates in the reduction of NADP+ to NADPH.
Carbon dioxide enters the plants via stomata.
Rubisco attaches three molecules of ribulose bisphosphate (RuBP) to one molecule of carbon dioxide.
Which of the following statements about the light reactions of photosynthesis is NOT true?
Chlorophyll and other pigments absorb light energy, which excites electrons
ATP is generated by photophosphorylation
Electrons from water are given to the chlorophyll molecules of Photosystem!
The splitting of water molecules provides a source of electrons
Chapter 7 Solutions
Principles of Biology
Ch. 7.1 - Which types of organisms carry out cellular...Ch. 7.1 - Prob. 1BCCh. 7.1 - Prob. 2CCCh. 7.1 - Prob. 1TYKCh. 7.1 - If you were traveling from the cytosol to the...Ch. 7.1 - Prob. 3TYKCh. 7.2 - Prob. 1CCCh. 7.2 - Prob. 2CCCh. 7.2 - What is the advantage of having different pigment...Ch. 7.2 - Prob. 4CC
Ch. 7.2 - Prob. 5CCCh. 7.2 - Prob. 1TYKCh. 7.2 - Prob. 2TYKCh. 7.2 - What is the purpose of cyclic...Ch. 7.3 - Prob. 1CCCh. 7.3 - Prob. 1TYKCh. 7.3 - Prob. 2TYKCh. 7.4 - Prob. 1CCCh. 7.4 - Prob. 1TYKCh. 7.4 - Prob. 2TYKCh. 7.5 - Prob. 1CCCh. 7.5 - Prob. 1BCCh. 7.5 - What are the advantages and disadvantages for C3,...Ch. 7.5 - Prob. 1TYKCh. 7.5 - An evolutionary adaptation to minimize...Ch. 7 - The water necessary for photosynthesis is split...Ch. 7 - Prob. 2TYCh. 7 - Prob. 3TYCh. 7 - Prob. 4TYCh. 7 - During the first phase of the Calvin cycle, carbon...Ch. 7 - Prob. 6TYCh. 7 - Prob. 7TYCh. 7 - Prob. 8TYCh. 7 - Prob. 9TYCh. 7 - Plants commonly found in hot and dry environments...Ch. 7 - What are the two stages of photosynthesis? What...Ch. 7 - What is the function of NADPH in the Calvin cycle?Ch. 7 - A principle of biology is that living organisms...Ch. 7 - Discuss the advantages and disadvantages of being...Ch. 7 - Prob. 2CBQ
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- What is the molecule that leaves the Calvin cycle to be converted into glucose? a. ADP b. G3P c. RuBP d. 3-PGAarrow_forwardMost of the carbon that land plants use for photosynthesis comes from ______. a. glucose b. the atmosphere c. water d. soilarrow_forwardFigure 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_forward
- Place the following steps for one turn of the Calvin Cycle in the correct order. Carbon fixation Production of a 3-Carbon sugar Carbon dioxide (CO2) is taken into the plant. Carbon reduction Regeneration of RuBP (ribulose bisphosphate)arrow_forwardWhich of the following are inputs of the Calvin Cycle? Choose all that apply. sunlight oxygen gas water G3P (precursor to glucose) carbon dioxide gas NADPH ADP+P NADP+ O ATParrow_forwardWhich of the following statements about the challenges of C3 photosynthesis under hot conditions is TRUE? O When they close stomatal cells, they save water but lose too much O2. O Rubisco has a higher affinity for CO2, making the rate of photosynthesis too rapid. When stomatal cells close, photorespiration increases and CO2 is lost. C3 plants have to spend energy to store carbon in a separate specialized cell.arrow_forward
- Which of the following are products of the Calvin cycle that are then used as reactants in the light reactions? CO2 Sugar NADP+ O2 ATP NADPH ADP .arrow_forwardIdentify the strategies that CAM (crassulacean acid metabolism) plants use to minimize water loss while obtaining CO2 (carbon dioxide) for photosynthesis. form a four-carbon molecule as the first step in fixing CO2 Okeep stomata closed throughout the hot and dry seasons Ostore carbon in vacuoles overnight and synthesize sugars during the day O conduct the Calvin cycle in bundle sheath cells instead of mesophyll cellsarrow_forwardWhich of the following are outputs of the Calvin cycle? Choose all that apply. ATP water carbon dioxide gas ADP+P G3P (precursor to glucose) NADPH NADP+ oxygen gas sunlightarrow_forward
- Plants that carry out crassulacean acid metabolism (CAM) differ from C4 plants in that they do not contain rubisco. their stomata are open at night. they do not need ATP for photosynthesis. they do not carry out the Calvin cycle. they do not contain PEP carboxylase.arrow_forwardWhat is required for simple diffusion? A transport protein A concentration gradient ATP Which of the following is NOT a component of a photosystem? Chlorophyll pigments Reaction center Accessory pigments Stomata and guard cells Proteins What does NOT occur in C4 The Calvin cycle takes place In bundle-sheath cells. Photorespiration is minimized CO2 is first fixed to form a four-carbon molecule. CO2 is first produced in the mesophyll cells using rubisco to form a six-carbon molecule Light energy that is capture in photosynthesis is converted to ______ energy stored in chemical bonds of molecules. Potential Sound Solar Kinetic Why do photosynthesizes contain accessory pigments in addition to chlorophyll a? To reflect different wavelengths on the exterior of the photosynthetic organism. To filter light such that only photons of the right wavelength reach chlorophyll a. To absorb wavelengths of light that chlorophyll a cannon and extend the range of the wavelengths captured.…arrow_forwardWhich of the following is TRUE about CAM photosynthetic pathway? Compared to the C3 and C4 pathways, CAM photosynthesis results in greater transpiration and water loss. O By separating where carbon is initially fixed inside the leaf tissue, CAM plants can better control the gradient of carbon dioxide between the air and their leaves. CAM photosynthesis is more energy efficient than C3 photosynthesis. Compared to C3 and C4 photosynthetic pathways, the rate of CAM photosynthesis is limited.arrow_forward
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