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Respiration in Plants Test - 58

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Respiration in Plants Test - 58
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Anaerobic process after glycolysis is known as
    Solution
    A) Lactic acid fermentation is the process that occurs after glycolysis when there is lack of oxygen.
    B) TCA or Krebs cycle occurs glycolysis in the presence of oxygen and converts Acetyl coenzyme into oxaloacetic acid to yield ATP.
    C) Calvin cycle is the common pathway for $$C_3$$ and $$C_4$$ plants.
    So the correct option is 'None of the above'.
  • Question 2
    1 / -0
    Substrate phosphorylation occurs during
    Solution
    When a single round of Krebs' cycle completes, only 1 ATP/GTP is produced by substrate level phosphorylation. Ketoglutarate dehydrogenase (6C) is converted to succinyl CoA which is then converted to succinic acid (4C) by phosphorylating 1 ADP to ATP. So the answer is 'Ketoglutaric acid Succinic acid'.
  • Question 3
    1 / -0
    Energy required to form glucose from pyruvate is equivalent to
    Solution
    Glucose is converted to pyruvic acid through glycolysis. There is a net yield of 8 ATP for 1 glucose to undergo glycolysis. So if the pyruvic acid is converted to glucose, the energy required will also be 8 ATP. So the answer is '8 ATP'.
  • Question 4
    1 / -0
    Sequence of organic acids in Krebs cycle is
    Solution
    Krebs' cycle starts with the formation of citric acid which then converts to cis-aconitic acid and then to iso-citric acid in presence of aconitase . Iso-citric acid converts to oxalosuccinic acid in presence of isocitrate dehydrogenase.
    So the answer is 'Citric acid isocitric acid oxalosuccinic acid'.
  • Question 5
    1 / -0
    During glycolysis, glucose is first changed to
    Solution
    In the very first step of glycolysis, the glucose undergoes phosphorylation in which adding a phosphate group to the molecule. The glucose molecule is converted to glucose 6-phosphate by phosphorylation.
    So, the correct option is 'Glucose 6-phosphate.'
  • Question 6
    1 / -0
    Alcoholic fermentation uses
    Solution
    The production of ethanol is called alcohol fermentation. The very first reaction catalyzed by a cytoplasmic enzyme, pyruvate decarboxylase.
    So the correct option is 'Cytoplasmic enzymes.'
  • Question 7
    1 / -0
    Which of the following enzymes is absent in mitochondria?
  • Question 8
    1 / -0
    Number of carbon atoms available in acetyl CoA is ____________.
  • Question 9
    1 / -0
    How many ATP is produced in the pay off phase of glycolysis?
    Solution
    Glycolysis is a metabolic process in which one glucose molecule is converted into 2 puruvate molecules under aerobic condition. During the formation of 3-phosphoglyceric acid and pyruvic acids 2 ATP molecules are formed respectively. However, 2 molecules of ATP are utilized during conversion of glucose to glucose-6-phosphate and fructose-6-phosphate to fructose-1,6-biphosphate. Hence, the end products of glycolysis are 2 ATP molecules, 2 pyruvic acid molecules and 2 NADH molecules. 
    Thus, the correct answer is '4.'

  • Question 10
    1 / -0
    Alcoholic fermentation is carried out by
    Solution
    Saccharomyces is used in fermentation is alcohol. Saccharomyces will be grown in anaerobic conditions same as growth takes place in aerobic conditions.
    So the correct option is 'Saccharomyces.'
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