Respiration in Plants PYQs Set 1 (PDF)

Set 1 of 1 · Questions 1-28 of 28

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Mere Teacher · Previous Year Questions NEET Biology · Respiration in Plants · Set 1 (Q1-28)
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1. $The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because :-$ (1) $A proton gradient forms across the inner membrane$ (2) $There is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP)$ (3) $High energy bonds are formed in mitochondrial proteins$ (4) $ADP is pumped out of the matrix into the intermembrane space$ 2. $Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalysed by$ (1) $Aldolase$ (2) $Hexokinase$ (3) $Enolase$ (4) $Phosphofructokinase$ 3. $In mitochondria, protons accumulate in the :$ (1) $Matrix$ (2) $Outer membrane$ (3) $Inner membrane$ (4) $Intermembrane space$ 4. $In which one of the following processes C O_{2} is not released?$ (1) $Aerobic respiration in plants$ (2) $Aerobic respiration in animals$ (3) $Alcoholic fermentation$ (4) $Lactate fermentation$ 5. $Which of the following statements is incorrect?$ (1) $During aerobic respiration, role of oxygen is limited to the terminal stage.$ (2) $In ETC (Electron Transport Chain), one molecule of NADH + H^{+} gives rise to 2 ATP molecules, and one F A D H_{2} gives rise to 3 ATP molecules.$ (3) $ATP is synthesized through complex V.$ (4) $Oxidation-reduction reactions produce proton gradient in respiration.$ 6. $All enzymes of TCA cycle are located in the mitochondrial martix except one which is located in inner mitochondrial membrane in eukaryotes and in cytosol in prokaryotes. This enzyme is:-$ (1) $Succinate dehydrogenase$ (2) $Lactate dehydrogenase$ (3) $Isocitrate dehydrogenase$ (4) $Malate dehydrogenase$ 7. $Identify the cytochrome which acts as a mobile carrier for the transfer of electrons between complex III and IV?$ (1) $Cytochrome- a_{3}$ (2) $Cytochrome-b, c_{1}$ (3) $Cytochrome-c$ (4) $Cytochrome-a$ 8. $Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins?$ (1) $Glucose 6 - phosphate$ (2) $Fructose 1,6-bisphosphate$ (3) $Pyruvic acid$ (4) $Acetyl-CoA$ 9. $Conversion of glucose to glucose-6- phosphate, the first irreversible reaction of glycolysis, is catalyzed by :$ (1) $Aldolase$ (2) $Hexokinase$ (3) $Enolase$ (4) $Phosphofructokinase$ 10. $Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins?$ (1) $Pyruvic acid$ (2) $Acetyl CoA$ (3) $Glucose-6-phosphate$ (4) $Fructose 1,6-bisphosphate$ 11. $Aerobic respiratory pathway is appropriately termed :-$ (1) $Parabolic$ (2) $Amphibolic$ (3) $Anabolic$ (4) $Catabolic$ 12. $The overall goal of glycolysis, Krebs cycle and the electron transport system is the formation of:-$ (1) $Nucleic acids$ (2) $ATP in small stepwise units$ (3) $ATP in one large oxidation reaction$ (4) $Sugars$ 13. $The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called :$ (1) $Glycolysis$ (2) $Fermentation$ (3) $Aerobic respiration$ (4) $Photorespiration$ 14. $Pyruvate dehydrogenase activity during aerobic respiration requires :-$ (1) $Calcium$ (2) $Iron$ (3) $Cobalt$ (4) $Magnesium$ 15. $In glycolysis, ATP is synthesised during the conversion of$ (1) $Glucose to glucose 6-phosphate$ (2) $Fructose 6-phosphate to fructose 1, 6-bisphosphate$ (3) $1,3-bisphosphoglyceric acid to 3-phosphoglyceric acid$ (4) $Both (b) and (c)$ 16. $Which one of the following mammalian cells are not capable of metabolizing glucose to carbon-dioxide aerobically?$ (1) $Red blood cells$ (2) $White blood cells$ (3) $Unstriated muscle cells$ (4) $Liver cells$ 17. $The energy releasing metabolic process in which the substrate is oxidized without an external electron acceptor is called$ (1) $Glycolysis$ (2) $Fermentation$ (3) $Aerobic respiration$ (4) $Photorespiration$ 18. $The number of substrate level phosphorylations in one turn of citric acid cycle is :$ (1) $Three$ (2) $Zero$ (3) $One$ (4) $Two$ 19. $What amount of energy is released from glucose during lactic acid fermentation?$ (1) $Less than 7 %$ (2) $Approximately 15 %$ (3) $More than 18 %$ (4) $About 10 %$ 20. $The number of time(s) decarboxylation of isocitrate occurs during single TCA cycle is :$ (1) $One$ (2) $Two$ (3) $Three$ (4) $Four$ 21. $The energy-releasing process in which the substrate is oxidised without an external electron acceptor is called :-$ (1) $Aerobic respiration$ (2) $Glycolysis$ (3) $Fermentation$ (4) $Photorespiration$ 22. $What is the net gain of ATP when each molecule of glucose is converted to two molecules of pyruvic acid?$ (1) $Eight$ (2) $Four$ (3) $Six$ (4) $Two$ 23. $Which statement is wrong for Krebs' cycle?$ (1) $There is one point in the cycle where F A D^{+} is reduced to F A D H_{2}$ (2) $During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesised$ (3) $The cycle starts with condensation of acetyl group (acetyl CoA) with pyruvic acid to yield citric acid$ (4) $There are three points in the cycle where N A D^{+} is reduced to NADH + H^{+}$ 24. $Cytochromes are found in$ (1) $Matrix of mitochondria$ (2) $Outer wall of mitochondria$ (3) $Cristae of mitochondria$ (4) $Lysosomes$ 25. $Cytochromes are found in :-$ (1) $Outer wall of mitochondria$ (2) $Cristae of mitochondria$ (3) $Lysosomes$ (4) $Matrix of mitochondria$ 26. $The 5-C compound formed during TCA cycle is:$ (1) $α - ketoglutaric acid$ (2) $Oxalosuccinic acid$ (3) $Succinic acid$ (4) $Fumaric acid$ 27. $Respiratiory Quotient (RQ) value of tripalmitin is :$ (1) $0.9$ (2) $0.7$ (3) $0.07$ (4) $0.09$ 28. $Where is respiratory electron transport system (ETS) located in plants?$ (1) $Mitochondrial matrix$ (2) $Outer mitochondrial membrane$ (3) $Inner mitochondrial membrane$ (4) $Intermembrane space$