molecules. Occurs in the chloroplast: CC, L In this drawing of a chloroplast, which structure represents the thylakoid membrane? Carbon dioxide absorption is an appropriate indicator of photosynthesis Unlike cellar respiration, photosynthesis occurs in. What does not occur during the Calvin Cycle? 83) B) theenergy in CO2isused toproduce ATP and NADPH. This free, energized electron powers the electron transport chain to generate ATP and ultimately be "handed off" to NADP+ to make NADPH for the Calvin cycle. B) plants produce oxygen gas by splitting CO 2. Arsenic is a poison that binds to a molecule needed to build acetyl CoA. A student prepared two beakers with identical sprigs of a water plant as shown below. C) They allow the plant to fix carbon more efficiently in dim or cool conditions. B) glucose After reading the paragraph, answer the question(s) that follow. Which of the following statements about the greenhouse effect is true? C) kinetic They help the plant conserve water and synthesize glucose efficiently under hot, dry conditions. Plants use sugars as : . The chloroplast ATP synthase E) protects Earth from UV radiation. D) a fuel for cellular respiration and a starting material for making other organic molecules. A) one C) provide energy to Photosystem I and Photosystem II. stroma. B) electromagnetism versa. nucleus. b) cytoplasm . A) 6 CO2 + 6 H2O + sunlight C6H12O6 + 6 O2. C) concentrated in a portion of the leaf called the stroma. What do CR and photosynthesis have in common? C) eat other organisms that use light energy to make food molecules. 55) What is the main adaptive advantage of the C4 and CAM photosynthesis strategies over the C3 A) Plants require carbon dioxide, water, and sunlight to make glucose. . How do the reaction centers of photosystem I and II differ? What can you conclude about how the distance from a light source relates to the rate of photosynthesis? This is the initial step of a complex process leading to the formation of sugars. c) green. C) occurs during the light reactions. a) NADH b) FADH2 c) NADPH Plant roots and leaves absorb water, which reacts with carbon dioxide using energy from light as the catalyst. A) ATP is not produced during photosynthesis, but only during respiration. containers are observed for a 24-hour period. D) provide energy for the Krebs cycle. She counted the bubbles given off by the plants in each beaker. C) regeneration of ATP is driven by a flow of protons through an ATP synthase. color of the indicator solution also changes. B) Photosynthesis involves only oxidations, while respiration involves only reductions. B) supplies the cell with ATP. A) is an evolutionary relic from when atmospheric O2 levels were low and did not interfere with rubisco. C) reduced by the burning of fossil fuels, which removes oxygen from the atmosphere. 43) Photosystem II If the concentration of carbon dioxide is increased, the rate of photosynthesis will therefore increase. in which of the products of photosynthesis will the radioactive H and O show up? c) phaser. 35) How do the reaction centers of photosystem I and II differ? Why? Plants absorb carbon dioxide from the air, combine it with water and light, and make carbohydrates the process known as photosynthesis. Which of the following statements describes what happens in the photosystems? Light reactions are located in the thylakoid membrane because _____. A) Plants require carbon dioxide, water, and sunlight to make glucose. The stomata open to absorb the carbon dioxide needed to perform photosynthesis. For every six molecules of G3P produced, 3 CO2 enter the cycle. 2. The light reactions occur in the ________, while the Calvin cycle occurs in the ________. In developed countries, CO 2 was first applied to cucumbers, tomatoes, and salads (western-style mixed vegetables) in greenhouse (enclosed space). A) donation of excited electrons by chlorophyll a to a primary electron acceptor 6CO2 + 6HO2 ---> C6H12O6 + 6O2 (carbon dioxide + water -->sugar + oxygen), -occurs in thylakoids -uses light energy to convert water to oxygen -light is absorbed by chlorophyll in thylakoid membranes, -occurs in the stroma -requires ATP- made from light reactions -converts CO 2 to sugars. It is acidic, and its concentration is in continual flux as a result of its utilization by aquatic plants in photosynthesis and release in respiration of aquatic organisms. Which of the following statements about the absorption of photons by pigment molecules is true? The ATP and NADPH produced during the light reactions are necessary to provide energy and high-energy electrons for the Calvin cycle. b) the stoma. A) The greenhouse effect is reduced by deforestation. C) shuttle electrons along in a series of redox reactions. E) NADPH. Which of the following colors contributes the least energy to photosynthesis? Photosynthetic organisms derive their carbon from C) an electron. D) are found on the plasma membrane of mesophyll cells. What is the likely origin of chloroplasts? 61) What is the main adaptive advantage of the C4 and CAM photosynthesis strategies over the C3 strategy? solution. d) electrons from water and energy from sunlight. b) a free, energized electron. respiration in that two? It is well established that as CO 2 in the atmosphere . C) cytoplasm A) H and O both in glucose B) H in glucose; O in water C) H in water; O in glucose D) H in glucose and water; O in O2 E) H in glucose and water; O in water and O2, Which of the following statements concerning the role of redox reactions in photosynthesis and cellular respiration is true? You're conducting an experiment to determine the effect of different wavelengths of light on the absorption of carbon dioxide as an indicator of the rate of photosynthesis in aquatic ecosystems. c) have photosynthetic pigments. He placed a stopper on each test tube and placed them all in the dark for 24 hours. Most of the biomass of the cut trees would be added to the atmosphere as CO2 within a few years. Biology 1408 - Exam 3 - Chapter 7, 8, 9 Flashcards | Quizlet D) thylakoid membranes . NADH The light reactions of photosynthesis use _____ and produce _____. D) NADPH. A) mitochondria. d) couples the flow of H+ to the phosphorylation of ADP. or three? B) concentrated in the stomata. You're conducting an experiment to determine the effect of different wavelengths of light on the absorption of carbon dioxide as an indicator of the rate of photosynthesis in aquatic ecosystems. A) G3P A) power sugar synthesis during the Calvin cycle. c. CO2 is needed to produce sugars in the Calvin cycle. Which of the following statements concerning the role of redox reactions in photosynthesis and cellular respiration is true? E) a fuel for cellular respiration and a starting material for making other organic molecules. D) catalyze the incorporation of carbon atoms into RuBP. Which of the following statements regarding photosynthesis is false? Carbon dioxide absorption is an appropriate indicator of photosynthesis because. When the carbon dioxide concentration decreases, the color of the indicator solution also changes. Which of the following colors contributes the least energy to photosynthesis? a) Sucrose (C12H22O11) C) absorb electrons. d) electromagnetism. What provides electrons for the light reactions? Produces molecules of FADH2: CAC B) C5H12O6 + 6 O2 + sunlight 5 CO2 + 6 H2O. Some stages may have more than one characteristic or share characteristics. D) requires the input of NADPH. In recent decades, the CO 2 fertilizer (such as AGROSOL, a carbon dioxide gas fertilizer) was applied to promote field condition (open space). D) absorption of photons by carotenoids. Carbon dioxide is particularly influential in regulating pH. The Calvin cycle constructs ________, an energy-rich molecule that a plant cell can then use to make glucose or other organic molecules. a) ADP, NADP+, O2. 3) Which of the following is an example of a photoautotroph? A) moderated by photosynthesis, which removes carbon dioxide from the atmosphere. Hall, William C. Rose. c) blue, red, and violet. B) potential solution. What important fact does this argument ignore? If the rate of photosynthesis increases, the amount of carbon dioxide in the environment will decrease and vice versa. . Two turns of the Calvin cycle can lead to the production of one molecule of glucose as the three-carbon precursor, glyceraldehyde-3-phosphate, is produced with each turn of the cycle. Container A is placed under normal sunlight, B under green light, and C under red light. B) Photons raise electrons in pigments to the ground state. Although the reactions of the Calvin cycle are not directly dependent on light, they usually do not occur at night. nuclear. The chloroplast ATP synthase A) is a nucleic acid complex. Involves the splitting of glucose: G light b) While it did have access to light before you left, the plant stored energy in the form of sugars or starch, and it was able to derive energy from those during your vacation. b. plants produce oxygen gas by splitting CO2. A) are located in the stroma. Based on your knowledge of the process of photosynthesis, the plant in the container placed under red light would probably A) absorb no CO2. photosynthetic prokaryotes that lived inside eukaryotic cells, Photophosphorylation during photosynthesis differs from oxidative phosphorylation during cellular respiration in that. E) Burning wood contributes more to acid rain than burning fossil fuels. A) oxygen. B) a starting material for the Calvin cycle. Factors affecting photosynthesis - carbon dioxide and temperature Place the letter of your choice in the space provided. occurs when carbon atoms from CO2 are incorporated into an organic molecule. Climate Change: Atmospheric Carbon Dioxide Which part of the ATP molecule breaks free of the rest when an ATP molecule is used for energy? After reading the paragraph below answer the questions that follow A) Chlorophyll a reflects green light. John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, David N. Shier, Jackie L. Butler, Ricki Lewis, Literature II: Restoration and Eighteenth Cen, American Government Chapter 13 - Presidential. b) Chlorophyll a is found in photosystem I and chlorophyll b in photosystem II. The containers are observed for a 24-hour period. Carbon dioxide absorption is an appropriate indicator of photosynthesis because B) donation of excited electrons by chlorophyll b to a primary electron acceptor (SELECT ALL THAT APPLY.). 42) The electrons lost from the reaction center of photosystem II are replaced by electrons from C) glycolysis. The electrons lost from the reaction center of photosystem II are replaced by electrons from Although the reactions of the Calvin cycle are not directly dependent on light, they usually do not occur at night. The ultimate source of all the food we eat and the oxygen we breathe is. > >U bjbj 7 L T 8 $ , , ? A) a fuel for photosynthesis. D) nuclear, 25) The full range of electromagnetic energy is called the ________ spectrum. a) helps transport H+ against the concentration gradient. . C) Photosystem I functions first in the sequence of steps that make up the light reactions. 17) What is the source of energy that provides the boost for electrons during photosynthesis? ignore? A) Chlorophyll a is found in photosystem I and chlorophyll b in photosystem II.
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