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RuBP carboxylase, PEPcase, pyruvate dehy...

RuBP carboxylase, PEPcase, pyruvate dehydrogenase, ATPase, cytochrome oxidase, hexokinase, lactate dehydrogenase. Select/ choose enzymes from the list above which are involved in
(a) Photosyntheis (b) Respirattion.
Both in photosynthesis and respiration

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(a) Photosynthesis : RuBP carboxylase, PEP case.
(b) Respiration : Pyruvate dehydrogenase, Cytochrome oxidase, Hexokinase, Lactose dehydrogenase.
(c ) Both photosynthesis and Respiration : ATPase.
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[A] = RuBisCo, [B] = PEPcase, [C] = Decarboxylase, [D] = Dehydrogenase Which of the above given enzymes can catalyze carboxylation reaction?

Read the passage given below and answer the following questions: Reduction of carboxylic acids and their derivatives plays an important role in organic synthesis, in both laboratory and industrial processes. Traditionally, the reduction is performed using stochiometric amounts of hydride reagents, generating stochiometric amounts of waste. A much more attractive, atom-economical approach is a catalytic reaction using H_2 , however, hydrogenation of carboxylic acid derivatives under mild conditions is a very challenging task, with amides presenting the highest challenge among all classes of carbonyl compounds. Very few examples of the important hydrogenation of amides to amines, in which the C-O bond is cleaved with the liberation of water (Scheme 1), were reported. C-O cleavage of amides can also be affected with silanes as reducing agents. We have now prepared the new, dearomatized, bipyridine-based pincer complex 3, catalyst 3(Here refered as Cat. 3). Remarkably, it efficiently catalyzes the selective hydrogenation of amides to form amines and alcohols (eq 1). The reaction proceeds under mild pressure and neutral conditions, with no additives being required. Since the reaction proceeds well under anhydrous conditions, hydrolytic cleavage of the amide is not involved in this process. (Balaraman, E., Gnanaprakasam, B., Shimon, L. J., & Milstein, D. (2010). Direct hydrogenation of amides to alcohols and amines under mild conditions. Journal of the American Chemical Society, 132(47), 16756-16758.) In the following questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage. Assertion: Aniline can be prepared from suitable amide using catalyst 3 Reason: The use of catalyst 3 is limited to aliphatic amides only.

Read the passage given below and answer the following questions: Reduction of carboxylic acids and their derivatives plays an important role in organic synthesis, in both laboratory and industrial processes. Traditionally, the reduction is performed using stochiometric amounts of hydride reagents, generating stochiometric amounts of waste. A much more attractive, atom-economical approach is a catalytic reaction using H_2 , however, hydrogenation of carboxylic acid derivatives under mild conditions is a very challenging task, with amides presenting the highest challenge among all classes of carbonyl compounds. Very few examples of the important hydrogenation of amides to amines, in which the C-O bond is cleaved with the liberation of water (Scheme 1), were reported. C-O cleavage of amides can also be affected with silanes as reducing agents. We have now prepared the new, dearomatized, bipyridine-based pincer complex 3, catalyst 3(Here refered as Cat. 3). Remarkably, it efficiently catalyzes the selective hydrogenation of amides to form amines and alcohols (eq 1). The reaction proceeds under mild pressure and neutral conditions, with no additives being required. Since the reaction proceeds well under anhydrous conditions, hydrolytic cleavage of the amide is not involved in this process. (Balaraman, E., Gnanaprakasam, B., Shimon, L. J., & Milstein, D. (2010). Direct hydrogenation of amides to alcohols and amines under mild conditions. Journal of the American Chemical Society, 132(47), 16756-16758.) In the following questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage. Assertion: Use of hydride catalyst or hydrogen brings about cleavage of C-O bond in amides. Reason: Hydride catalyst or hydrogen cause to reduction of amides.

Read the passage given below and answer the following questions: Reduction of carboxylic acids and their derivatives plays an important role in organic synthesis, in both laboratory and industrial processes. Traditionally, the reduction is performed using stochiometric amounts of hydride reagents, generating stochiometric amounts of waste. A much more attractive, atom-economical approach is a catalytic reaction using H_2 , however, hydrogenation of carboxylic acid derivatives under mild conditions is a very challenging task, with amides presenting the highest challenge among all classes of carbonyl compounds. Very few examples of the important hydrogenation of amides to amines, in which the C-O bond is cleaved with the liberation of water (Scheme 1), were reported. C-O cleavage of amides can also be affected with silanes as reducing agents. We have now prepared the new, dearomatized, bipyridine-based pincer complex 3, catalyst 3(Here refered as Cat. 3). Remarkably, it efficiently catalyzes the selective hydrogenation of amides to form amines and alcohols (eq 1). The reaction proceeds under mild pressure and neutral conditions, with no additives being required. Since the reaction proceeds well under anhydrous conditions, hydrolytic cleavage of the amide is not involved in this process. (Balaraman, E., Gnanaprakasam, B., Shimon, L. J., & Milstein, D. (2010). Direct hydrogenation of amides to alcohols and amines under mild conditions. Journal of the American Chemical Society, 132(47), 16756-16758.) In the following questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage. Assertion: The use of catalyst 3 is an efficient method of preparation of primary amines Reason: Use of catalyst 3 is a step down reaction.

Read the passage given below and answer the following questions: Reduction of carboxylic acids and their derivatives plays an important role in organic synthesis, in both laboratory and industrial processes. Traditionally, the reduction is performed using stochiometric amounts of hydride reagents, generating stochiometric amounts of waste. A much more attractive, atom-economical approach is a catalytic reaction using H_2 , however, hydrogenation of carboxylic acid derivatives under mild conditions is a very challenging task, with amides presenting the highest challenge among all classes of carbonyl compounds. Very few examples of the important hydrogenation of amides to amines, in which the C-O bond is cleaved with the liberation of water (Scheme 1), were reported. C-O cleavage of amides can also be affected with silanes as reducing agents. We have now prepared the new, dearomatized, bipyridine-based pincer complex 3, catalyst 3(Here refered as Cat. 3). Remarkably, it efficiently catalyzes the selective hydrogenation of amides to form amines and alcohols (eq 1). The reaction proceeds under mild pressure and neutral conditions, with no additives being required. Since the reaction proceeds well under anhydrous conditions, hydrolytic cleavage of the amide is not involved in this process. (Balaraman, E., Gnanaprakasam, B., Shimon, L. J., & Milstein, D. (2010). Direct hydrogenation of amides to alcohols and amines under mild conditions. Journal of the American Chemical Society, 132(47), 16756-16758.) In the following questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage. Assertion: N-methyl ethanamide on reaction with catalyst 3 will yield ethanol and methanamine. Reason: Use of Catalyst 3 brings about cleavage of C-N bond of amides

Match the following and choose the correct option from those given below. {:("Colume A","Colume B"),("(A) Molecular oxgen","(i)"alpha-"Ketoglutaric acid"),("(B) Eletron acceptor","(ii) hydrogen acceptor"),("(C) Pyruvate dehydrogenase","(iii) cytochrome C"),("(D) Decarboxylation ","(iv) acetyl Co A"):}

Match the following and choose the correct option from those given below. {:(Column A,Column B),(A."Molecular oxygen",i.alpha-"Ketoglutaric acid"),(B."Electron acceptor",ii."Hydrogen acceptor"),(C."Pyruvate dehydrogenase",iii."Cytochrome"C),(D."Decarboxylation",iv."Acetyl"CoA):}

Match column I with column II and select the correct option from the codes given below {:(underset("(Activator element) ")("Column I"),underset("(Enzyme)")("Column II")),(A" "Mg^(2+) ,,(i)" Nitrate reductase"),(B." "Zn^(2+),(ii)." RuBisCO, PEPCase"),(C." "Mo,(ii)." Alcohol dehydrogenase"):}

MODERN PUBLICATION-RESPIRATION IN PLANTS -NCERT FILE (Exemplar Problems) C. SHORT ANSWER TYPE QUESTIONS
  1. The energy yield in terms of ATP is higher in aerobic respiration than...

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  2. Oxygen is an essential requirement for aerobic respiration but it ente...

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  3. Respiration is an energy releasing adn enzymatically controlled catabo...

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  4. Comment of the statement resiration is an energy producing process but...

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  5. The figure given below shows the steps in glycolysis. Fill in the miss...

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  6. Respiratory pathway is referred to as an amphibolic pathway ?

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  7. We commonly call ATP as the energy currency of the cell. Can you think...

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  8. ATP produced during glycolysis is a result of substrate level phosphor...

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  9. Do you know any step in the TCA cycle where there is substrate level ...

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  10. In a way green plants and cyanobacteria have synthesised all the food ...

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  11. When a substrate is being metabolised, why does not all the energy tha...

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  12. Respiration requires O(2). How did the first cells on the earth magage...

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  13. It is known that red muscle fibres in animals can work for longer peri...

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  14. The energy yield of ATP is higher in aerobic respiration than during a...

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  15. RuBP carboxylase, PEPcase, pyruvate dehydrogenase, ATPase, cytochrome ...

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  16. How does a tree trunk exchange gases with the environment although it...

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  17. Write two energy yielding reactions of glycolysis.

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  18. Name the site (s) of pyruvate synthesis. Also write the chemical react...

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  19. Mention the important series of events of aerobic respiration that occ...

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  20. Resipratory pathway is believed to be a catabolic pathway. However, na...

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