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 2FTB
Chlorophyll a captures wavelengths of light that correspond to the three colors ____,___, and __. What color does chlorophyll reflect? _____ Accessory pigments that reflect yellow and orange are called ___. These pigments are located in clusters called ____ in the ___ membrane of the chloroplast.
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Students have asked these similar questions
Which of the following proteins is NOT involved in cyclic electron flow during the light reaction?
A. ferredoxin
B. plastocyanin
C. photosystem I
D. photosystem II
Which molecule conveys protons from the chloroplast stroma into the thylakoid lumen?
a. cytochrome b6-f
b. plastocyanin
c. phytochrome
d. cytochrome c
e. oxygen
Which of the following is not a product of the light reactions in photosynthesis? a. O2 b. NADPH c. H2O d. ATP
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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- Photosystems are essential to the light reactions. Which of the following is true about photosystems? a) Photosystems are embedded within membranes, across which they create a proton gradient. b) Photosystems work together to absorb light over a larger surface area than could be possible from just one pigment molecule working alone. c) Photosystems are composed of proteins and pigment molecules. d) All of the abovearrow_forwardDuring the light reactions of photosynthesis, pigments within the thylakoids membranes absorb solar energy, split water, and releasearrow_forwardThis molecule: • is contained in the thylakoid membrane of chloroplasts • convert sunlight energy into ATP • Reflects green wavelengths of light. _______?arrow_forward
- Students are preforming an experiment to study the role of light in photosynthesis. They place an Elodea plant into a large test tube with water and assemble a volumeter using a cork and calibrated glass tubing. Then, the apparatus is placed near a lamp. Soon after, the water level in the tubing begins to move upward. Why does the edge of the water move upward?arrow_forwardIn which compartment of the chloroplast and mitochondrion does the ATP synthase pump the protons respectively? a. Stroma and matrix b. Lumen and thylakoid membrane c. Lumen and intermembrane space d. Matrix and thylakoid lumenarrow_forwardWhich stage of light dependent reactions of photosynthesis is linked to photo system 1 ? the answer choices are shown in the photoarrow_forward
- Why is it necessary for cells to have a vacuole filled with water if they are photosynthetic cells? Plant cells that do no do photosynthesis, might store starch or pigments in their vacuoles. So, why is a reservoir of water essential for cells doing photosynthesis? In your answer, be sure to refer to the organelle that does photosynthesis.arrow_forwardWhat is the color of the visible light that is not utilized in photosynthesis? Select one: a. orange b. green c. blue d. yellow e. redarrow_forwardThe shorter the wavelength of visible light, the ______. more photons it contains less energy absorbed by photosynthetic pigments redder the color greater the energyarrow_forward
- The overall flow of electrons in the light reactions is from a. antenna pigments to the reaction center. b. H2O to CO2. c. photosystem I to photosystem II. d. H2O to NADPH.arrow_forwardATP 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_forwardWhich of the following changes would decrease ATP production in the light-dependent reactions of photosynthesis? a. decreasing the pH of the thylakoid lumen b. decreasing the pH of the chloroplast stroma c. increasing the concentration of NADP+ in the chloroplast stroma d. making the thylakoid membrane freely permeable to protons by adding a proton channel e. two of the above would decrease ATP productionarrow_forward
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