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51.

With reference to Glycolysis, which of the following statement is not correct?

  • Glycolysis consumes 2 ATP molecules for the initial phosphorylation of substrate molecule.

  • Oxygen is not required for glycolysis

  • Net gains is one molecule of NADH and three molecules of ATP for every molecule of glucose broken down.

  • It is a linear pathway and occur inside the cytoplasm.


52.

Statement I:- α-ketoglutarate dehydrogenase catalyses the conversion of oxalosuccinic acid to α-ketoglutarate.

Statement II:- This reaction is accompained with release of CO2.

Choose the correct option.

  • Statement I is correct and statement II is incorrect

  • Statement II is correct and statement I is incorrect

  • Both statements correct

  • Both statements incorrect


53.

Match the following electron transport chain (ETC) inhibitors with their mode of action.

Column I Column II
A. Dinitrophenol (2,4- DNP) 1. Electron flow from cyt a3 to O2
B. Cyanide 2. Direct electrons from Co-Q to O2
C. Antimycin-A 3. Electron flow from NADH/FADH2 to Co- Q
D. Rotenone 4. Electron flow from Cyt- b to Cyt- c

  • A - 2; B - 4; C - 1; D - 3

  • A - 2; B - 1; C - 4; D - 3

  • A - 3; B - 4; C - 1; D - 2

  • A - 1; B - 2; C - 3; D - 4


54.

In complete oxidation of glucose, ATP molecules are formed from ADP. Which among the following stage yields the maximum amount of ATP?

  • Glycolsis

  • Kreb's cycle

  • Electron transport chain

  • Conversion of pyruvic acid to acetyl Co-A


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55.

Glycolysis is

  • C6H12O6 + 6O2  6O2 + 6H2O

  • C6H12O6  2C2H5OH + 2CO2

  • C6H12O6 2C3H4O3 + 2CO2

  • C3H4O+ NADH C2H5OH + CO2 + NAD+


56.

The repeating unit in glycogen is

  • glucose

  • fructose

  • galactose

  • cellulose


57.

Chloroplast has maximum quantity of .......... in stroma.

  • dehydrogenase

  • RuDP carboxylase

  • pyruvic carboxylase

  • hexokinase


58.

Which of the following set is a mis-match?

  • Phosphoenol pyruvate carboxykinase - Gluconeogenesis

  • Phospho fructokinase - Glycolysis

  • Succinate dehydrogenase - Kerbs cycle

  • Urease - Urea cycle


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59.

2NAD(H+) produced during anaerobic glycolysis yield

  • 6 ATP molecules

  • 4 ATP molecules

  • 8 ATP molecules

  • None of these


60.

In the electron transport chain, in terminal oxidation, the cytochrome, which donates electrons to O2 is

  • cytochrome- b 

  • cytochrome- c

  • cytochrome- a3

  • cytochrome- a


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