CBSE
Multiple Choice QuestionsIn the electron transport chain, in terminal oxidation, the cytochrome, which donates electrons to O2 is
cytochrome- b
cytochrome- c
cytochrome- a3
cytochrome- a
Which of the following set is a mis-match?
Phosphoenol pyruvate carboxykinase - Gluconeogenesis
Phospho fructokinase - Glycolysis
Succinate dehydrogenase - Kerbs cycle
Urease - Urea cycle
The repeating unit in glycogen is
glucose
fructose
galactose
cellulose
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
Statement I:- -ketoglutarate dehydrogenase catalyses the conversion of oxalosuccinic acid to -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
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
Glycolysis is
C6H12O6 + 6O2 6O2 + 6H2O
C6H12O6 2C2H5OH + 2CO2
C6H12O6 2C3H4O3 + 2CO2
C3H4O3 + NADH C2H5OH + CO2 + NAD+
2NAD(H+) produced during anaerobic glycolysis yield
6 ATP molecules
4 ATP molecules
8 ATP molecules
None of these
Chloroplast has maximum quantity of .......... in stroma.
dehydrogenase
RuDP carboxylase
pyruvic carboxylase
hexokinase
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.
