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Respiration in Plants Test - 62

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Respiration in Plants Test - 62
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  • Question 1
    1 / -0
    Enzyme of TCA which is located in inner mitochondrial membrane in eukaryotes and cytosol in prokaryotes is ?
  • Question 2
    1 / -0
    In which step of Krebs cycle, CO$$_2$$ is evolved _________________.
  • Question 3
    1 / -0
    In Krebs cycle, OAA accepts acetyl CoA to form
    Solution
    Citric acid cycle is also called as Krebs cycle or tricarboxylic acid cycle. It is a metabolic cycle through which aerobic organisms obtain their energy. Pyruvate produced in glycolysis first gets converted into acetyl CoA before entering citric acid cycle. This acetyl CoA is accepted by oxaloacetic acid (OAA) to form ctric acid, the first product of the cycle.
    Thus, the correct answer is 'Citric acid.' 

  • Question 4
    1 / -0
    Reduction of $$NAD^+$$ does not occur in the reaction
    Solution
    Krebs' cycle is a cyclic process that occurs in mitochondrial matrix in which reduced compounds like NADH2 and FADH2 are formed that liberate energy as ATP as they undergo ETS. The conversion of succinic acid to fumaric acid reduces FAD to FADH2 and not NAD to NADH2.
    So the answer is 'Succinic acid to Fumaric acid'.
  • Question 5
    1 / -0
    Oxidative decarboxylation occurs during the reaction
    Solution
    Pyruvic acid from glycolysis can only enter Krebs' cycle by going through a link reaction. In this, pyruvic acid is dehydrogenated and decarboxylated by the pyruvate dehydrogenase enzyme, liberating CO2 and H2. H2 reduces NAD to NADH2. The product formed is acetyl CoA. Such a reaction is called oxidative decarboxylation.
    So the answer is 'Pyruvic acid Acetyl CoA'.
  • Question 6
    1 / -0
    Pyruvic acid formed during glycolysis is oxidised to CO$$_2$$ and H$$_2$$O in
    Solution
    During glycolysis process, glucose is broken down into two molecules of pyruvate and the pyruvate enters into the mitochondria where it is oxidized through the citric acid cycle to carbon dioxide and water. 
    So the correct option is 'Krebs cycle.'
  • Question 7
    1 / -0
    Pyruvate dehydrogenase complex needed for conversion of pyruvic acid to acetyl CoA is located in _______________.
  • Question 8
    1 / -0
    Conversion of pyruvic acid to acetyl CoA is _______________.
  • Question 9
    1 / -0
    Aerobic respiratory pathway is appropriate termed ___________.
  • Question 10
    1 / -0
    R.Q. is one in case of
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