Complex II has except

  • FAD

  • Fe-S centres

  • Succinate Dehydrogenase

  • Cytochrome C1

Complex III has

  • Cytochrome b

  • Cytochrome C

  • Copper centres

  • Cytochrome a3

Oxidation of FADH2 actually involves except

  • Complex I

  • Complex II

  • Complex III

  • Complex IV

Oxidation of complex NADH involves except

  • Complex I

  • Complex II

  • Complex III

  • Complex IV

Which of the following complex is involved in the transfer of 4 hydrogen ions across the mitochondrial membrane?

  • Complex I

  • Complex II

  • Complex V

  • Complex IV

Which of the following complex does not allow transfer of Protons across the mitochondrial membrane but transfer of electrones in the inner membrane?

  • Complex II

  • Complex III

  • Complex IV

  • Complex I

Which of the following complex has got one Domain present in matrix and other domain in the inner membrane?

  • Complex I

  • Complex II

  • Complex III

  • Complex V

Why does oxygen is important for complete oxidation of Glucose?

  • Because it is limited to the terminal stage of the process

  • Because it drives the whole process by removing hydrogens from the system

  • It acts as the final hydrogen acceptor not the Electron acceptor

  • Both B and C

Why do we call it oxidative Phosphorylation?

  • Because of the presence of oxygen

  • Because here proton gradient is maintained by the energy of oxidation and reduction

  • Because of the presence of ADP and oxygen

  • Because of the presence of Phosphorylation derived by oxygen

The amount of energy which is produced by one molecule of FADH2 and one molecule of NADH?

  • 2 ATPs, 3 ATPs

  • 5 ATPs, 3 ATPs

  • 3 ATPs, 3 ATPs

  • 3 ATPs, 2 ATPs

Which of the following gradient is observed in ETS?

  • Chemical

  • Electrical

  • Osmotic

  • Electrochemical

Which of the following statements is incorrect?

  • Glucose is the favoured substrate for respiration

  • All carbohydrates are usually first converted into glucose before they are used for respiration

  • Other respiratory substrates are also respired but they do not enter the respiratory pathway at very first step

  • Fats directly enter the respiratory pathway

Glycerol and Fatty acids are the result of breaking down of Fats:

  • Fatty acids enter at the step of formation of BPGA

  • Fatty acids enter as acetyl CoA

  • Fatty acids enter as PGAL

  • Fatty acids enter as Pyruvate

The individual amino acid enter the respiratory pathway at

  • Within Krebs’ cycle

  • As Pyruvate or Acetyl CoA

  • As PGAL

  • Both A and B

How many Carbon-dioxide are evolved in respiration of two molecules of Tripalmitin?

  • 102

  • 145

  • 98

  • 6

RQ is 0.7; it can be

  • Carbohydrate

  • Protein

  • Fatty Acid

  • Both A and C

The RQ of a substrate is found to be 0.9 what would be that substrate?

  • Carbohydrate

  • Fatty Acid

  • Lipid

  • Protein

Match each item in Column I with one item in Column II regarding electron
transport chain located in the inner mitochondrial membrane and chose your answer from the codes given below:
Column I                          Column II
I. Complex I                     1. NADH dehydrogenase
II. Complex II                   2. FADH2
III. Complex III                 3. Cyt bc1 complex
IV. Complex IV                  4. ATP synthase
                                        5. Cytochrome c oxidase Codes:
      I   II   III   IV
  •    1   2    3    4
  •    1   2    3    5 
  •    2   1    3   4
  •    2   1    3   5

In the given diagrammatic representation of ATP synthesis in mitochondria, A, B and C are respectively:
  • 2 H+, F0 and F1
  • 2 H+, F1 and F0
  • 4 H+, F0 and F1
  • 4 H+, F1 and F0

Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins?

  •   Glucose-6-phosphate

  •   Fructose 1, 6-bisphosphate

  •   Pyruvic acid

  •   Acetyl Co-A

What is the role of NAD+ in cellular respiration?
  • It functions as enzymes
  • It functions as an electron carrier
  • It is a nucleotide source for ATP synthesis
  • It is the final electron acceptor for anaerobic respiration
Which of these statements is incorrect?

  • Enzymes of TCA cycle are present in mitochondrial matrix.

  • Glycolysis occurs in cytosol.
  • Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms.
  • Oxidative phosphorylation takes place in outermitochondrial membrane.

The three boxes in this diagram represents the three major biosynthetic pathways in aerobic respiration Arrows represent net reactants or products. 
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Arrows numbered 4, 8 and 12 can all be:

  • ATP

  • A2O

  • FAD+ or FADH2

  • NADH

Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by:

  • Phosphofructokinase

  • Aldolase

  • Hexokinase

  • Enolase

 

Respiratory Quotient (RQ) value of tripalmitin is:

  • 0.09

  • 0.9

  • 0.7

  • 0.007

Which of the following statements regarding mitochondria is incorrect ?

  • Mitochondrial matrix contains single circular DNA molecule and ribosomes

  • Outer membranes is permeable to monomers of carbohydrates, fats and proteins

  • Enzymes of electron transport are embedded in outer membrane

  • Inner membrane is convoluted with infoldings

Where is the respiratory electron transport system (ETS) located in plants?

  •  Mitochondrial matrix

  •  Outer mitochondrial membrane

  •  Inner mitochondrial membrane

  • Intermembrane space

The number of substrate level of phosphorylations in one turn of citric acid cycle is

  • One

  • Two

  • Three

  • Four

Pyruvate dehydrogenase activity during aerobic respiration requires :-

  • Calcium

  • Iron

  • Cobalt

  • Magnesium

Which of the following statements is incorrect? 

  • ATP is synthesized through complex V.

  • Oxidation-reduction reactions produce proton gradient in respiration. 

  • During aerobic respiration, the role of oxygen is limited to the terminal stage. 

  • In ETC (Electron Transport Chain), one molecule of NADH+H+ gives rise to 2ATP molecules, and one FADH2 gives rise to 3 ATP molecules.

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