b. Cochlear duct A by-product of cellular respiration is heat. B) The greenhouse effect is exacerbated by the use of fossil fuels. If the rate of photosynthesis increases, the amount of carbon dioxide in the environment will decrease and vice versa. The electrons lost from the reaction center of photosystem II are replaced by electrons from Match the terms in column A with the descriptions in column B. Which of the following statements regarding photosynthesis and cellular respiration are true? d) the membrane functions as a mitochondrial membrane but at night. 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. grana. c) a source of electrons for chemiosmosis. In this drawing of a chloroplast, which structure represents the thylakoid membrane? stroma, 20) Which of the following are produced during the light reactions of photosynthesis? (SELECT ALL THAT APPLY.). c) the membrane brings chlorophyll closer to the light. D) red. the wavelength increases as a plant is placed further away from a light source. At some point, another. c) Photosystem II does not transfer electrons from photons. , Why are there less air bubbles as the plant is place further away from the light source d) ATP, NADPH, O2, Which of the following are produced during the Calvin cycle? . B) ATP Which part of the ATP molecule breaks free of the rest when an ATP molecule is used for energy? d) couples the flow of H+ to the phosphorylation of ADP. A student poured a solution of bromthymol blue indicator into three test tubes. Cellular Respiration uses them to produce ATP, CO2, and O2, Photosynthesis uses CO2 and H2O to convert sunlight into glucose and O2, Interphase- all cells make new molecules and organelles, Prophase-two sister chromatids joined together; in cytoplasm-spindle microtubules, Metaphase- microtubules attach to the sister chromatids and pull toward opposite polls. E) The release of energy by the excited electron can be as heat, light, or fluorescence. What can you conclude about how the distance from a light source relates to the rate of photosynthesis? D) aerobic respiration. C) carotenoids. a) thylakoid membranes . B) Chlorophyll a absorbs green light. In recent decades, the CO 2 fertilizer (such as AGROSOL, a carbon dioxide gas fertilizer) was applied to promote field condition (open space). b) The Calvin cycle depends on products of the light reactions. 17) What is the source of energy that provides the boost for electrons during photosynthesis? B) potential Using this value, find the separation distance of the 222 nitrogen atoms. Carbon dioxide absorption is an appropriate indicator of photosynthesis because D) eight, 52) The Calvin cycle constructs ________, an energy-rich molecule that a plant cell can then use to cellular respiration and photosynthesis pract, Biology | Unit 2 Review | Classification, Evo, 5. organisaiton: plant organisation: Transpir, Michelle Provost-Craig, Susan J. A) Chlorophyll a is found in photosystem I and chlorophyll b in photosystem II. D) NADPH. C) eat other organisms that use light energy to make food molecules. b) absorb electrons. thylakoid membranes. d) Photosystem I functions first in the sequence of steps a) Each preferentially absorbs slightly different wavelengths of light. C) carbon dioxide. What is the main adaptive advantage of the C4 and CAM photosynthesis strategies over the C3 strategy? . 2003-2023 Chegg Inc. All rights reserved. Why? C) H2O. D) the final electron acceptor is NADP+ and not oxygen. 41) The electrons lost from the reaction center of photosystem I are replaced by electrons from . Estimate the mass of the crate. Mitochondria differ from chloroplasts in that mitochondria. . a) forms NADPH to be used in the Calvin cycle. Container A is placed under normal sunlight, B under green light, and C under red light. . containers are observed for a 24-hour period. D) production is associated with events taking place on the inner mitochondrial membrane. D) requires the input of NADPH. cellular respiration is true? Carbon dioxide is particularly influential in regulating pH. functions is linearly dependent or linearly independent on D. CO is needed to produce sugars in the Calvin cycle. D) the energy in CO 2 is used to produce ATP and NADPH. strategy? Photosynthetic organisms derive their carbon from What happened to the energy that was stored in your gastank after your lawnmower comes to a stop as a resultof running out of gas? the final electron acceptor is NADP+ and not oxygen. d) When light energy is not available, plants can derive energy from inorganic molecules. B) glucose Carbon dioxide initially combines with RuBP, and RuBP is regenerated to continue the Calvin cycle. , t (b) By what percentage does the density of a bowling ball change (assuming it is a uniform sphere) when it is taken from room temperature (68F)\left(68^{\circ} \mathrm{F}\right)(68F) into the cold night air in Nome, Alaska (40F).\left(-40^{\circ} \mathrm{F}\right) .(40F). b) plants produce oxygen gas by splitting CO2. C) have mitochondria but do not have chloroplasts. E) Burning wood contributes more to acid rain than burning fossil fuels. a. D) In photosynthesis, carbon dioxide is reduced to form sugar, while in respiration, sugar is oxidized to Although the reactions of the Calvin cycle are not directly dependent on light, they usually do not occur at night. Small aquatic plants are placed into three containers of water mixed with carbon dioxide. Amino Acids enter: G, CAC structure C According to this figure, how do H+ ions make their way from the stroma to the thylakoid interior? Cellular respiration: for glycolysis, put G; for citric acid cycle, put CAC; and for electron transport chain, put ETC.Photosynthesis: for light reactions, put L; and for Calvin Cycle CC. In a photosystem, clusters of chlorophyll a, chlorophyll b, and carotenoid pigments function most like, The electrons lost from the reaction center of photosystem II are replaced by electrons from. Students in a biology class conduct an experiment to determine the effect of temperature on the rate of photosynthesis in a plant. A) Photosynthesis involves only reductions, while respiration involves only oxidations. . H+ Small aquatic plants are placed into three containers of water mixed with carbon dioxide and indicator D) mitochondria; chloroplasts ATP. D) the bottom of the electron transport chain. d) 3 CO2 a three-carbon molecule. C) CO 2 is needed to produce sugars in the Calvin cycle. The containers are observed for a 24-hour period. D) found throughout the leaf tissue. . B) Each preferentially absorbs slightly different wavelengths of light. ) C) reduced by the burning of fossil fuels, which removes oxygen from the atmosphere. NADH The light reactions of photosynthesis use _____ and produce _____. Normal human gametes carry ____ chromosomes. Which of the following statements regarding photosynthesis and carbon dioxide is false? After reading the paragraph, answer the question(s) that follow. A) is best at absorbing the energy of green light. B) H in glucose; O in water c) blue, red, and violet. d) kinetic, Which of the following colors contributes the least energy to photosynthesis? C) is a source of oxygen for cellular respiration. c) Even though it cannot carry out the light reactions, the plant can still produce sugars because the Calvin cycle does not require light. B) are very different from those of cellular respiration. It has increased from the pre-industrial level of 280 mol mol -1 in 1750 to c. 400 mol mol -1 at present and is expected to increase to c. 900 mol mol -1 by the end of the 21st century. A student exposed two plants to only red light and two plants to only green light. A) light During what phase of meiosis does recombination occur? A) They help the plant conserve water and synthesize glucose efficiently under hot, dry conditions. D) provide energy for the Krebs cycle. A) pass energy to the reaction center. B) absorb the same amount of CO2 as the plants under both the green light and normal sunlight. A) CO2 is needed to produce sugars in the Calvin cycle. Contain membrane folds called cristae, whereas chloroplasts contain disk-like vesicles in stacks called grana. . D) phycocyanin, 34) Which of the following is a normal process of photosynthesis that could not occur if all reaction You've added an indicator to each solution. true or false: organisms on earth are currently classified first as either plant or animal. water . f1(x)=x,f2(x)=x2,f3(x)=4x3x2. c) have photosynthetic pigments. . CO2 provides the carbon atoms that are incorporated into sugars in photosynthesis. D) nuclear, 25) The full range of electromagnetic energy is called the ________ spectrum. When chloroplast pigments absorb light, their electrons become excited. c) CO2 is needed to produce sugars in the Calvin cycle. A) photosynthetic prokaryotes that lived inside eukaryotic cells. CO2 enters and O2 escapes from a leaf via 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 are produced during the Calvin cycle? . f. Pharyngotympanic (auditory) tube E) of little concern, since it is part of the normal cycle for the planet. How do the reaction centers of photosystem I and II differ? If the rate of photosynthesis increases, the amount of carbon dioxide in the environment will decrease and vice versa. Carbon dioxide absorption is an appropriate indicator of photosynthesis because. D) are found on the plasma membrane of mesophyll cells. Formation of waste products in the form of O2. B) The greenhouse effect is exacerbated by the use of fossil fuels. Light reactions are located in the thylakoid membrane because _____. It has been argued that cutting old-growth forests and replacing them with plantations of young trees would help to alleviate the threat of global greenhouse warming. b) electrons from water and energy from ATP. C) occurs during the light reactions. . . b. D) ATP. Small aquatic plants are placed into three containers of water mixed with carbon dioxide and indicator solution. B) is analogous to the production of ATP in mitochondria. d) fluorescence. It is well established that as CO 2 in the atmosphere . Turn off all gas flow when the machine is not in use. A) Plants require carbon dioxide, water, and sunlight to make glucose. 51) To produce one glucose, the Calvin cycle needs to be run through ________ time(s). D) H+ . B) food . If the rate of photosynthesis increases, the amount of carbon dioxide in the environment will decrease and vice versa. Does it seem peculiar that symmetric fission is not the most probable? B) Young trees fix carbon at a lower rate per unit mass than old trees. Why? What provides the carbon atoms that are incorporated into sugar molecules in the Calvin cycle? B) The greenhouse effect is exacerbated by the use of fossil fuels. Small aquatic plants are placed into three containers of water mixed with carbon dioxide. E) protects Earth from UV radiation. 3 minutes ==\quad= seconds b) FADH2 C) regeneration of NADP+ d) G3P. Which of the following statements regarding transport across a plasma membrane is false? The stomata open to absorb the carbon dioxide needed to perform photosynthesis. This process begins with the absorption of light by specialized organic molecules, called pigments, that are found in the chloroplasts of plant cells.Here, we'll consider light as a form of energy, and we'll also see how pigments - such as the chlorophylls . The CO2 enters and O2 escapes from a leaf via. absorb more CO2 than the plants under the green light. Container A is placed under normal sunlight, B under green light, and C under red light. b) methane. two? c) light. How many "turns" of the Calvin Cycle are required to produce 1 molecule of glucose? D) Photosynthesis produces O2; respiration produces CO2. 46) The chloroplast ATP synthase A) stroma . Carbon exchange with the atmosphere mostly happens through photosynthesis and respiration. The containers are observed for a 24-hour period. Because plants can make more organic material each day than they need to use as respiratory fuel and precursors for biosynthesis, they stockpile the extra sugar as starch, storing some in chloroplasts, as well as in roots, tubers, seeds, and fruits. 2. e) reduction of CO2. Mutation that introduces a different codon, resulting in a different amino acid. 3) Which of the following is an example of a photoautotroph? Container A is placed under normal sunlight, B under green light, and C under red light. D) ATP, NADPH, O2, 21) Which of the following is part of the light reaction? 32) Which of the following statements about the absorption of photons by pigment molecules is true? 19) The light reactions occur in the ________, while the Calvin cycle occurs in the ________. . C) plants produce oxygen gas by splitting CO 2. The chloroplast ATP synthase A) is a nucleic acid complex. C) yellow B) plants produce oxygen gas by splitting CO 2. d) reduction of NADP+. c) phaser. C) couples the flow of H+ to the phosphorylation of NADP+. Check all that apply Carbon is stored in the living biomass. B CO2 is needed to produce sugars in the Calvin cycle . E) its enzymes are membrane-bound, D) the final electron acceptor is NADP+ and not oxygen. ) . 55) What is the main adaptive advantage of the C4 and CAM photosynthesis strategies over the C3 C) cytoplasm B) energy is stored in the form of a proton concentration difference. spotted flower/blood type, -1 gene influences multiple traits -ex. D) They make it possible for the plant to use the Calvin cycle at night. The electron transport chains of the light reactions A) are located in the stroma. c. 2 days ==\ldots= minutes D) Excitation of the electrons is a very stable state. A) Chlorophyll a reflects green light. In photosynthesis, carbon dioxide is reduced to form sugar, while in respiration, sugar is oxidized to form carbon dioxide. stroma. . C) photon. This recombination of maternal and paternal genetic material is a key feature of meiosis. What has the plant been using for an energy source while in the dark? d) forms part of photosystem II. H+ a) Each preferentially absorbs slightly different wavelengths of light. E) uses noncyclic electron flow to capture energy in glucose. AP BIO - Unit 2 Cell Structure & Function, DH 126 Chapter 7 terms- fr 35-78-Soft Tissues, David N. Shier, Jackie L. Butler, Ricki Lewis, John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine. What is the source of energy that provides the boost for electrons during photosynthesis? C) orange 36) Clusters of light-gathering pigments in a photosystem B) Photons raise electrons in pigments to the ground state. A) Forests play too minor a role in global CO2 dynamics, which are affected far more by marine algae. Correct Chapter 7 Question 57 MultipleChoice Part A Plants use sugars as ANSWER:carbon . 64) It has been argued that cutting old-growth forests and replacing them with plantations of young trees would help to alleviate the threat of global greenhouse warming. Stores energy in a form that can drive cellular work. six? concentrated in a zone of leaf tissue called the mesophyll. Water is necessary because it is the splitting of water molecules that provides plant cells with electrons and a proton to reduce NADP+ to NADPH. The containers are observed for a 24-hour period. C) regeneration of ATP is driven by a flow of protons through an ATP synthase. 47) In photosynthesis, the chemiosmotic production of ATP The chlorophyll breaks down, the green color disappears, and the yellow to orange colors become visible and give the leaves part of their fall splendor. b) contain protein but not lipids Plant cells A) lack mitochondria and chloroplasts. If the rate of photosynthesis increases, the amount of carbon dioxide in the environment will decrease, and vice versa. D) include only the green plants. In what form would you expect to find sulfur (S) as a result of photosynthesis in these bacteria? B) Burning fossil fuels release carbon dioxide that was removed from the atmosphere millions of years ago. D) is embedded in the inner membrane of the chloroplast. C) is done by the Calvin cycle. She placed one beaker in the shade and the other beaker beside a fluorescent lamp. D) releases CO2 as a by-product. What transports electrons from the light reactions to the Calvin cycle? a) NADP+ NADPH. A centrifuge used to subject engineering components to high acceleration has a radius of 8m8 \mathrm{~m}8m. It starts from rest at t=0t=0t=0, and during its two-minute acceleration phase it is programmed so that its angular acceleration is given as a function of time in seconds by =0.1920.0016trad/s2\alpha=0.192-0.0016 t \mathrm{rad} / \mathrm{s}^2=0.1920.0016trad/s2. Glycolysis is the only stage of cellular respiration that requires _______ to make ______. C) an electron. The electrons lost from the reaction center of photosystem I are replaced by electrons from A) CO2. . Why are most plants green?

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