BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 8, Problem 5U
How is a reaction center pigment in a photosystem different from a pigment in the antenna complex?
a. The reaction center pigment is a chlorophyll molecule.
b. The antenna complex pigment can only reflect light.
c. The reaction center pigment loses an electron when it absorbs light energy.
d. The antenna complex pigments are not attached to proteins.
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Plants containing only chlorophyll b are exposed to radiation with the following wavelengths: 10nm (x-rays), 450nm (blue light), 670nm (red light), and 800nm (infrared light). Which plants harness the most energy for photosynthesis? a. X-ray irradiated plants b. Blue light irradiated plants c. Red light irradiated plants d. Infrared irradiated plants
What happens when light hits the pigments, P680 and P700. during the light-dependent
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Compare photophosphorylation and oxidative phosphorylation. How is chemiosmosis in chloroplasts different from chemiosmosis in mitochondria?
a.
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b.
In mitochondria, light is transformed into ATP using photosystems I and II.
c.
Chemiosmosis in mitochondria occurs across an intra-organelle membrane, where it does not in chloroplasts.
d.
In chloroplasts, the high-energy electrons come from water.
Chapter 8 Solutions
BIOLOGY
Ch. 8.1 - Prob. 1LOCh. 8.1 - Prob. 2LOCh. 8.2 - Prob. 1LOCh. 8.2 - Differentiate between the light-dependent and...Ch. 8.3 - Discuss how pigments are important to...Ch. 8.3 - Prob. 2LOCh. 8.4 - Prob. 1LOCh. 8.4 - Prob. 2LOCh. 8.5 - Prob. 1LOCh. 8.5 - Prob. 2LO
Ch. 8.6 - Describe carbon fixation.Ch. 8.6 - Prob. 2LOCh. 8.7 - Prob. 1LOCh. 8.7 - Prob. 2LOCh. 8 - Prob. 1DACh. 8 - Prob. 2DACh. 8 - Prob. 3DACh. 8 - The light-dependent reactions of photosynthesis...Ch. 8 - Which region of a chloroplast is associated with...Ch. 8 - The colors of light that are most effective for...Ch. 8 - During noncyclic photosynthesis, photosystem I...Ch. 8 - How is a reaction center pigment in a photosystem...Ch. 8 - The ATP and NADPH from the light reactions are...Ch. 8 - The carbon fixation reaction converts a. inorganic...Ch. 8 - Prob. 8UCh. 8 - Prob. 1ACh. 8 - If you could measure pH within a chloroplast,...Ch. 8 - Prob. 3ACh. 8 - If the Calvin cycle runs through six turns a. all...Ch. 8 - Prob. 5ACh. 8 - Given that the C4 pathway gets around the problems...Ch. 8 - If the thylakoid membrane became leaky to ions,...Ch. 8 - The overall process of photosynthesis a. results...Ch. 8 - Compare and contrast the fixation of carbon in C3,...Ch. 8 - Diagram the relationship between the reactants and...Ch. 8 - Do plant cells need mitochondria? Explain your...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 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_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 denaturation temperature of rubisco in a certain plant was determined to be 76.2 degrees Celsius. What happens to the rate of photosynthesis if the temperature continues to increase? A. The rate of photosynthesis will increase. B. The rate of photosynthesis will decrease. C. The rate of photosynthesis will remain the same. D. The rate of photosynthesis will decrease, then increase.arrow_forward
- Identify which of the following statements is a lie? Select one: a. Even if plants have red leaves, they still perform photosynthesis. b. Photosynthesis is vital in plants to produce food and energy they need for growth and cellular respiration. Therefore, all plants need the same amount of sunlight to make enough food to grow. c. Aside from chlorophyll α and chlorophyll b in plants, plants also have carotenoids, which help plants absorb light energy for use in photosynthesis.arrow_forwardWhich of the following is true of light-independent reactions of photosynthesis? Select all that apply. a. Light-independent reactions occur in the stroma. b. Water molecules are split during light-independent reactions. c. Chlorophyll absorbs energy from sunlight. d. Carbon dioxide is necessary for light-independent reactions.arrow_forwardRibulose bisphosphate carboxylase, which might be the most abundant enzyme on Earth, is part of which photosynthetic reaction? A. the Hill reaction B. the light-independent reaction C. photosystem II D. the light-dependent reaction E. photosystem Iarrow_forward
- A researcher decides to isolate thylakoid membranes and add protons to the space inside the thylakoids by soaking the thylakoids in acetic acid, which diffuses through the membrane, and then washing the thylakoids very quickly. What will happen? A. The scheme will run in reverse. B. ATP will be able to be made without light. C. Light will be emitted by the thylakoids. D. The membranes will dissolve.arrow_forwardIf you landed on a planet where all of the plants had purple leaves, what wavelengths of light would you expect to be least effective for photosynthesis? explain your reasoning.arrow_forwardWhat is Photobleaching? A.When the fluorescence of a fluorophore becomes whiter due to too much light exposure. B.When a fluorophore does not emit fluorescence because it transmits the excitation energy to a fluorophore located very close. C.The decrease in the fluorescence intensity of a molecule in the presence of heavy metals. D.The irreversible loss of fluorescence of a molecule.arrow_forward
- Which of the following statements is incorrect?a. Pigments absorb light of certain wavelengths only.b. Some accessory pigments are antioxidants.c. Chlorophyll is green because it absorbs green light.arrow_forwardWhich statement about the light reactions of photosynthesis and cellular respiration is correct? a. Both reactions occur in the cell cytoplasm b. plants do not require mitochondria because they produce ATP via photosynthesis c. ATP is produced as a result of the actions of an electron transport chain in both processes d. Light reactions and cellular respiration produce the same waste products e. the final electron acceptor in the light reactions is oxygenarrow_forwardThe function of light reactions is to a. obtain CO2. b. make carbohydrate. c. convert light energy into a usable form of chemical energy. d. regenerate RuBParrow_forward
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