ASPIRE
CLASS-XI
BIOLOGY
------------------------------------------------------------------------------------------------------------------b. is a single single chemical chemical reaction reaction with )ust one step. Multiple Choice Questions c. relea elease ses s hea heatt. 1. The term anaerobic means d. cons co nsum umes es glu gluco cose se.. a. witho ithout ut bac bacte teri ria. a. e. prod produc uces es water ater.. b. without CO CO2. c. witho ithout ut ATP. 8. The o'erall e*uation for the aerobic cellular respiration d. without O2 of glucose is e. with O2. a. CO + H O , C H O + O + ATP + Heat 2
2. How do cells capture the energy released by cellular respiration? a. They store store it in molecules molecules of carbon carbon dioxide. dioxide. b. They They prod produc uce e glu gluco cose se.. c. The The energ energy y is is coupl coupled ed to oxygen oxygen.. d. They They pro produ duce ce ATP. e. one one of of the the choi choices ces are correc correct. t.
b. c. d. 9.
2
-
2
-
2
C-H2O- + O2 , CO2 + H2O + ATP + Heat C-H2O- , /actic acid + ATP ATP + Heat C-H2O- CO2 + 0thyl alcohol + ATP + Heat
1uring cellular respiration$ the energy in glucose a. is used used to manufa manufactu cture re gluc glucose ose.. b. is used used to ma%e ma%e ATP c. become becomes s store stored d in mole molecul cules es of of ammoni ammonia. a. d. ma%e ma%es s car carbo bon n dio dioxi xide de..
3. !hich one of the following is true? a. Cell Cellul ular ar resp respir irat atio ion n occu occurs rs in mito mitoch chon ondr dria ia and and in 10. 1uring redox reactions chloroplasts. a. a subs substa tanc nce e that hat gains ains elec electtrons rons is sai said to be b. Photos Photosynt ynthes hesis is occurs occurs in chloropl chloroplast asts s and cellul cellular ar oxidied. respiration occurs in mitochondria. b. elect electron rons s are lost lost from from one subs substan tance ce and and added added to c. Photo hotosy synt nth hesi esis occu occurrs in mitoc tochon hondri dria and and in another substance. chloroplasts. c. the the loss loss of electr electron ons s from from one subst substan ance ce is called called d. Photos Photosynt ynthes hesis is occurs occurs in mitoc mitochon hondri dria a and cellul cellular ar reduction. respiration occurs in chloroplasts. d. protons protons from from one molec molecule ule replac replace e the electrons electrons lost e. eit eithe herr cell cellul ular ar resp respir irat atio ion n nor nor phot photos osyn ynth thes esis is from another molecule. occurs in mitochondria and in chloroplasts. e. one one of of the the choi choices ces are correc correct. t. 4. "espiration #####$ and cellular respiration ######. 11. Oxidation is the ######$ and reduction is the #####. a. uses uses gluco glucose se . . . produc produces es gluc glucose ose a. gain gain of elec electro trons ns . . . loss loss of of elect electron rons s b. produc produces es gluco glucose se . . . produ produces ces oxyg oxygen en b. loss loss of elec electro trons ns . . . gain gain of elec electro trons ns c. is gas gas excha exchange nge . . . prod produce uces s ATP ATP c. gain gain of proton protons s . . . loss loss of of proto protons ns d. produc produces es AT ATP . . . is gas gas excha exchange nge d. gain gain of oxygen oxygen . . . loss loss of oxyg oxygen en e. produc produces es gluc glucose ose . . . is gas gas exch exchang ange e e. loss loss of of oxyge oxygen n . . . gain gain of oxygen oxygen 5. !hic !hich h of the the foll follow owin ing g are are prod produc ucts ts of cell cellul ular ar 12. 3n biological systems$ an important enyme in'ol'ed in respiration? the regulation of redox reactions is a. energy energy to to ma%e ma%e ATP ATP and carb carbon on dioxi dioxide de a. oxygen. b. gluc glucos ose e and and carb carbon on dio dioxi xide de b. water. c. oxygen oxygen and energy energy to ma%e ma%e ATP c. dehy ehydrog drogen enas ase. e. d. oxyg oxygen en and and car carbo bon n diox dioxid ide e d. ATP. e. oxyg oxygen en and and gluc glucos ose e e. glucose. 6. !hich of the following statements is&are true about the 13. 1uring cellular respiration$ A1H energy yields from cellular respiration? a. is chemic chemically ally con'erted con'erted into into ATP. TP. a. Cellul Cellular ar respira respiratio tion n is more effici efficient ent at harness harnessing ing b. is con'erted to A1+ by an enyme called ener energy gy from from gluc glucos ose e than than car car engi engine nes s are are at dehydrogenase. harnessing energy from gasoline. c. is reduc reduced ed to to for form m A1 A1+. +. b. Cell Cellul ular ar respir respirat atio ion n con' con'er erts ts all of the ener energy gy in d. deli'e deli'ers rs its elect electron ron load load to the first first electr electron on carrier carrier glucose into high(energy ATP bonds. molecule. c. The The heat produ produced ced duri during ng cellul cellular ar respir respirati ation on is only only e. one one of of the the choi choices ces are correc correct. t. a tiny fraction of the chemical energy a'ailable in a glucose molecule. 14. 1uring cellular respiration$ electrons mo'e through a d. Cell Cellul ular ar resp respir irat atio ion n con' con'er erts ts the the %inet %inetic ic ener energy gy of series series of electr electron( on(car carri rier er molecu molecules les.. !hich !hich of the glucose into chemical energy. following is a true statement about this process? e. All All of the the cho choic ices es are are tru true. e. a. 4ole 4olecu cula larr oxyg oxygen en is e'en e'entu tual ally ly oxid oxidi ied ed by the the electrons to form water. 7. !hich one of the following statements is false? Cellular b. 0lectrons 0lectrons mo'e from carriers carriers that that ha'e ha'e more more affini affinity ty respiration for them to carriers that ha'e less affinity for them. a. prod produc uces es car carbo bon n diox dioxid ide. e. _________________________________________________________________________________________________ ___________________________________________________________ ______________________________________ % 08462000091, 08463000091 Aspire, 162, Ne Ci!ic Centre, "hil#i, C$ &e'( http())#spire'hil#i. #i.co* +..-o#n #ni#( 9407981575 /*#il( #spire.ee*#il.co* co*
ASPIRE
CLASS-XI
BIOLOGY
------------------------------------------------------------------------------------------------------------------c. 0lectrons release large amounts of energy each 21. Pyru'ate time they are transferred from one carrier to another. a. is the molecule that starts the citric acid cycle. d. The carrier molecules are found in the cytoplasm of b. is the end product of oxidati'e phosphorylation. eu%aryotic and pro%aryotic cells. c. is a six(carbon molecule. e. one of the statements are true. d. is the end product of chemiosmosis. e. forms at the end of glycolysis. 15. !hich one of the following is the correct se*uence of stages in cellular respiration? 22. 9etween glycolysis and the citric acid cycle$ a. glycolysis$ oxidati'e phosphorylation$ and the citric a. pyru'ate is oxidied while a molecule of A1+ is acid cycle reduced to A1H. b. glycolysis$ the citric acid cycle$ and oxidati'e b. coenyme A is clea'ed off of the four(carbon phosphorylation compound. c. the citric acid cycle$ oxidati'e phosphorylation$ and c. a carbon atom is added to ma%e a four(carbon glycolysis compound. d. oxidati'e phosphorylation$ the citric acid cycle$ and d. 4ore than one of the choices is correct. glycolysis e. one of the choices are correct. e. oxidati'e phosphorylation$ glycolysis$ and the citric 23. 1uring cellular respiration$ glucose is con'erted into two acid cycle pyru'ic acid molecules. These molecules 16. A drug is tested in the laboratory and is found to create a. together contain less chemical energy than was holes in both mitochondrial membranes. 5cientists found in the original glucose molecule. suspect that the drug will be harmful to human cells b. are oxidied. because it will inhibit c. each lose a carbon atom$ which is released as CO2 a. glycolysis. d. are each con'erted into a two(carbon molecule b. the citric acid cycle. )oined to a coenyme A molecule. c. oxidati'e phosphorylation. e. All of the choices are correct. d. the formation of alcohol. 24. The end products of the citric acid cycle include all of e. the citric acid cycle and oxidati'e phosphorylation. the following except 17. 1uring which phase of cellular respiration does a. CO2. substrate(le'el phosphorylation ta%e place? b. A1H. a. the citric acid cycle c. pyru'ic acid. b. 6grooming6 of pyru'ic acid d. 7A1H2. c. glycolysis e. ATP. d. oxidati'e phosphorylation 25. At the end of the citric acid cycle$ most of the energy e. glycolysis and the citric acid cycle remaining from the original glucose is stored in 18. !hich one of the following metabolic pathways is a. 7A1H2 common in aerobic and anaerobic organisms? b. CO2. a. oxidati'e phosphorylation c. pyru'ic acid. b. chemiosmosis d. ATP. c. glycolysis e. A1H. d. the citric acid cycle 26. 3n the electron transport chain$ the final electron e. one of the choices are correct. acceptor is 19. !hich of the following is a result of glycolysis? a. a molecule of water. a. a net loss of two ATPs per glucose molecule b. a molecule of carbon dioxide. b. con'ersion of 7A1 to 7A1H2 c. ATP. c. con'ersion of glucose to two three(carbon d. A1P. compounds e. an oxygen atom. d. production of CO2 27. "otenone is a poison commonly added to insecticides. e. con'ersion of A1H to A1+ 3nsects exposed to rotenone will die because 20. 8lycolysis a. high le'els of fermentation products will build up. a. does not occur in bacterial cells. b. water will not be produced and dehydration will b. ta%es place in 'irtually all cells. occur. c. does not occur in yeast cells. c. anaerobic respiration can:t occur. d. does not occur in animal cells. d. of inade*uate ATP production. e. does not occur in plant cells. e. one of the choices are correct. _________________________________________________________________________________________________ % 08462000091, 08463000091 Aspire, 162, Ne Ci!ic Centre, "hil#i, C$ &e'( http())#spire'hil#i.co* +..-o#ni#( 9407981575 /*#il( #spire.ee*#il.co*
ASPIRE
CLASS-XI
BIOLOGY
------------------------------------------------------------------------------------------------------------------28. Cyanide differs from dinitrophenol because cyanide 33. 4uscle soreness associated with strenuous exercise is a. is an electron transport bloc%er and dinitrophenol is at least partly due to a reaction uncoupler. a. the presence of lactic acid produced during b. ma%es the membrane of mitochondria lea%y to H+ fermentation in muscle cells. ions and pre'ents a concentration gradient from b. the large amount of carbon dioxide that builds up in building up; dinitrophenol bloc%s the passage of the muscle. electrons through electron carriers. c. the accumulation of alcohol from anaerobic c. inhibits the production of ATP by inhibiting ATP respiration. synthase; dinitrophenol causes mitochondrial d. an excess of ATP that builds up during 'igorous membranes to become less permeable to H+ ions. exercise. d. is highly toxic to human cells and dinitrophenol is e. one of the choices are correct. nontoxic. 34. 3n yeast cells$ e. one of the choices are correct. a. alcohol is produced after glycolysis. 29. !hich of the following statements about the energy b. glucose is produced during photosynthesis. yield of aerobic respiration is false? c. lactic acid is produced during glycolysis. a. 4ost of the ATP deri'ed during aerobic respiration d. alcohol is produced during the citric acid cycle. results from oxidati'e phosphorylation. e. lactic acid is produced during anaerobic respiration. b. Oxidati'e phosphorylation resulting from one 35. !hen proteins are used as a source of energy for the glucose molecule may yield <2(<= ATP molecules. body$ the proteins c. /ess than >@ of the chemical energy a'ailable in a. are hydrolyed to fatty acids and con'erted to acetyl glucose is con'erted to ATP energy. CoA$ which enters the citric acid cycle. d. 8lycolysis and the 6grooming6 of pyru'ate together b. are con'erted mainly into intermediates of glycolysis produce more A1H per glucose molecule than or the citric acid cycle. does the citric acid cycle. c. are hydrolyed to glycerols and then con'erted to e. 0ach 7A1H2 molecule yields 2 ATP molecules and glyceraldehyde <(phosphate$ which is fed into each A1H molecule generates < ATP molecules. glycolysis. 30. The energy yield from the complete aerobic brea%down d. are hydrolyed to their constituent amino acids; of a single molecule of glucose electrons are stripped from the amino acids and a. is less than the yield from anaerobic respiration. passed to the electron transport chain. b. increases as the supply of oxygen increases. e. are con'erted into glucose molecules$ which are fed c. is always < ATP. into glycolysis. d. can 'ary with the mechanism used to shuttle A1H 36. !hen a fatty acid is used for aerobic respiration$ it first electrons into the mitochondrion. hydrolyes fats to e. is e*ui'alent to the yield from alcoholic fermentation. a. glycerol and fatty acids. 31. 1uring chemiosmosis b. sugars and glycerol. a. a concentration gradient is generated when large c. glycerol and amino acids. numbers of H+ ions are passi'ely transported from d. sugars and amino acids. the matrix of the mitochondrion to the e. fatty acids and sugars. mitochondrion:s intermembrane space. and H2O into organic b. energy is generated by coupling exergonic reactions 37. The con'ersion of CO2 compounds using energy from light is called with other exergonic reactions. a. photorespiration. c. ATP is synthesied when H+ ions mo'e through a b. glycolysis. protein port pro'ided by ATP synthase. c. photosynthesis. d. H+ ions ser'e as the final electron acceptor. d. fermentation. e. energy is released as H+ ions mo'e freely across e. cellular respiration. mitochondrial membranes. 32. !hich of the following processes produces the most 38. 9y(products of cellular respiration include a. carbon dioxide and water. ATP per molecule of glucose oxidied? b. carbon dioxide and ATP. a. aerobic respiration c. oxygen and heat. b. alcoholic fermentation d. A1H and ATP. c. lactic acid fermentation e. 7A1H2 and A1H. d. anaerobic respiration e. All produce approximately the same amount of ATP per molecule of glucose.
39. The summary e*uation for photosynthesis is a. CO2 + H2O , C-H2O- + O2 + ATP + Heat b. C-H2O- + O2 , CO2 + H2O + ATP + Heat
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ASPIRE
CLASS-XI
BIOLOGY
------------------------------------------------------------------------------------------------------------------c. CO2 + H2O , C-H2O- + O2 d. one of the choices are correct. d. C-H2O- CO2 + 0thyl alcohol + ATP + Heat 47. 3n the chloroplast$ sugars are made in a compartment that is filled with a thic% fluid called the 40. !hich one of the following statements is false? a. matrix. a. 9urning fossil fuels releases carbon dioxide that was b. mesophyll. remo'ed from the atmosphere millions of years ago. c. stomata. b. !illows pac% more fuel and power than most nati'e d. thyla%oid. trees. e. stroma. c. Plants re*uire carbon dioxide$ water$ and sunlight to ma%e glucose. d. All of the food for people can be traced bac% to 48. !here is chlorophyll found in a plant cell? a. cytoplasm photosynthetic plants. b. thyla%oid membranes e. 9urning wood contributes more to acid rain than c. stroma burning fossil fuels. d. matrix e. cristae 41. Photoautotrophs a. produce organic molecules from inorganic 49. !hich of the following is true concerning the role of molecules. redox reactions in photosynthesis and cellular b. ma%e sugar by using organic raw materials. respiration? c. include only the green plants. a. 3n photosynthesis$ carbon dioxide is oxidied to form d. eat other organisms that use light energy to ma%e sugar while in respiration$ sugar is reduced to form food molecules. carbon dioxide. e. one of the choices are correct. b. Photosynthesis in'ol'es only oxidations while respiration in'ol'es only reductions. 42. !hich of the following is not an example of a c. Photosynthesis in'ol'es only reductions while photoautotroph? respiration in'ol'es only oxidations. a. algae d. 3n photosynthesis$ carbon dioxide is reduced to form b. %elp in an underwater forest sugar while in respiration$ sugar is oxidied to form c. cyanobacteria in freshwater and marine ecosystems carbon dioxide. d. herbs li%e thyme and basil e. one of the choices are true. e. fungi
43. Autotrophs that utilie light as their energy source are a. fungi. b. photoautotrophs. c. chemosynthetic autotrophs. d. consumers. e. heterotrophs. 44. Producers a. sustain themsel'es without eating. b. ma%e organic food molecules from simple raw materials. c. manufacture the biosphere:s food supply. d. are autotrophs. e. All of the choices are correct. 45. Chloroplasts contain dis% li%e membranous sacs arranged in stac%s called a. cristae. b. thyla%oids. c. 'acuoles. d. stroma. e. grana.
50. !hat is the source of energy that pro'ides the boost for electrons during photosynthesis? a. ATP b. light c. cellular respiration d. electromagnetism e. one of the choices are correct. 51. The light reactions occur in the ##### while the Cal'in cycle occurs in the ###### a. stroma . . . thyla%oid membranes b. cytoplasm . . . stroma c. thyla%oid membranes . . . stroma d. cytoplasm . . . thyla%oid membrane e. stroma . . . nucleus 52. !hich of the following are produced during the light reactions of photosynthesis? a. A1P$ A1P+$ O2 b. glucose$ A1P$ A1+ c. ATP$ A1PH$ CO2 d. glucose$ A1P$ A1P+$ CO2 e. ATP$ A1PH$ O 2
46. The oxygen released into the air as a product of 53. !hich of the following are produced during the Cal'in photosynthesis comes from cycle? a. chlorophyll. a. glucose$ A1P$ A1P+ b. carbon dioxide. b. ATP$ A1PH$ O 2 c. water.
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ASPIRE
CLASS-XI
BIOLOGY
------------------------------------------------------------------------------------------------------------------c. ATP$ A1PH$ CO2 61. 3n a photosystem$ clusters of chlorophyll a$ chlorophyll d. glucose$ A1P$ A1P+$ CO2 b$ and carotenoid pigments function most li%e e. A1P$ A1P+ $ O 2 a. an electrical generator. b. a propeller on a motorboat. 54. Carbon fixation c. a windmill. a. occurs when carbon and oxygen from CO2 are d. an antenna. incorporated into an organic molecule. e. a spring. b. powers the process of glucose synthesis by supplying the cell with ATP. 62. As a result of the cascade of electrons down the c. occurs during the light reactions. electron transport chains of the light reactions$ d. uses noncyclic electron flow to capture energy in a. A1PH is reduced to A1P+ glucose. b. A1P+ is oxidied to A1PH. e. pro'ides the cell with a supply of A1PH molecules. c. water is formed. d. A1PH is oxidied to A1P+ 55. The Cal'in cycle in'ol'es all of the following exceptB e. A1P+ is reduced to A1PH. a. addition of electrons and protons to carbon. b. formation of waste products in the form of CO2 63. The electrons lost from the reaction center of c. reduction of carbon. photosystem 3 are replaced by electrons from d. carbon fixation. a. ATP. e. regeneration of A1P+. b. CO2 c. H2O 56. 5unlight is a type of ########## energy. d. the top of the electron transport chain. a. potential e. the bottom of the electron transport chain. b. %inetic c. nuclear 64. 3n photosynthesis$ the chemiosmotic production of ATP d. stored a. re*uires oxygen. e. electromagnetic b. is analogous to the production of ATP in mitochondria. 57. !hy are mostD plants green? c. re*uires the input of A1PH. a. Chlorophyll a reflects green light. d. is done by the Cal'in cycle. b. Chlorophyll b primarily uses green light as the e. All of the choices are correct. source of energy for photosynthesis. c. 8reen helps plants blend into their en'ironment as a 65. 4itochondria transfer ### energy from ### to ATP; sort of camouflage. chloroplasts transform ### energy into the chemical d. Chlorophyll a absorbs green light. energy of ATP. e. All photosynthetic pigments are colored green. a. food . . . light . . . chemical b. food . . . light . . . nuclear 58. Of the following wa'elengths of light$ which would you c. chemical . . . food . . . light expect to be least absorbed by chlorophyll a? d. nuclear . . . light . . . food a. blue e. light . . . food . . . %inetic b. yellow c. green 66. Photosynthetic organisms deri'e their carbon from d. red a. hydrocarbons. b. carbon monoxide. 59. !hen a pigment molecule absorbs a photon$ one of its c. methane. electrons#### d. carbon dioxide. a. gains energy. b. becomes excited. 67. ATP and A1PH c. is put into an unstable state. a. play a role in glucose synthesis by plants. d. is raised from the ground state. b. are inputs to the photosystems. e. All of the choices are correct. c. production is associated with e'ents ta%ing place on the inner mitochondrial membrane. 60. Clusters of light(gathering antenna pigments in a d. are products of the Cal'in cycle. photosystem## e. All of the choices are correct. a. absorb electrons. b. do not absorb photons. 68. The ultimate source of all the food we eat and the c. pass energy to the reaction center. oxygen we breathe is d. are found in the roots of plants. a. photosynthesis. e. brea% down H2O. b. anaerobic metabolism. c. chemiosmosis. _________________________________________________________________________________________________ % 08462000091, 08463000091 Aspire, 162, Ne Ci!ic Centre, "hil#i, C$ &e'( http())#spire'hil#i.co* +..-o#ni#( 9407981575 /*#il( #spire.ee*#il.co*
ASPIRE
CLASS-XI
BIOLOGY
------------------------------------------------------------------------------------------------------------------d. glycolysis. c. H+. . . stroma . . . ATP e. cellular respiration. d. H+ to power of +D D . . . stroma . . . H+ e. electrons . . . grana . . . H+ 69. The electrons lost from the reaction center of photosystem 33 are replaced by electrons from 73. Plant cells a. CO2 a. lac% mitochondria and chloroplasts. b. A1PH. b. ha'e mitochondria and chloroplasts. c. photosystem 3. c. ha'e mitochondria but do not ha'e chloroplasts. d. H2O. d. lac% mitochondria but ha'e chloroplasts. e. ATP. 74. !hat is the main ad'antage of the C= and CA4 70. Photosystem 33 photosynthesis strategies o'er the C< strategy? a. does not ha'e a reaction center. a. They allow the plant to a'oid photorespiration by b. is reduced by A1PH. producing a four(carbon sugar in place of glucose. c. passes electrons to photosystem 3. b. They ma%e it possible for the plant to use the Cal'in d. has PE at its reaction center. cycle at night and during the day. e. All of the choices are correct. c. They allow the plant to fix carbon more efficiently under conditions of low atmospheric CO2 71. Photophosphorylation differs from oxidati'e d. They help the plant conser'e water and synthesie phosphorylation in that glucose efficiently under hot$ dry conditions. a. regeneration of ATP is dri'en by a flow of protons e. They allow the plant to fix carbon more efficiently in through an ATP synthase. dim or cool conditions. b. the final electron acceptor is A1P+ and not oxygen. 75. 1o photosynthesiing plants ha'e mitochondria? c. it in'ol'es an electron transport chain. a. Fes$ to con'ert glucose into starch. d. energy is stored in the form of a proton b. Fes$ but only in CA4 plants$ in which carbon is fixed concentration difference. at night. e. its enymes are membrane(bound. c. o$ chloroplasts produce ATP and glucose. d. Fes$ to supply the plant with the ATP needed to 72. 3n photophosphorylation$ energy from electron flow is power 'arious cell acti'ities. used to transport ###### from the ######to the e. Fes$ but they are used mainly to produce certain thyla%oid compartment$ generating a concentration Grebs cycle intermediates$ which are needed for the gradient of ##########. synthesis of compounds such as amino acids. a. H+. . . grana . . . electrons b. electrons . . . stroma . . . H+
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