Multiple Choice Questions

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The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products

Arrows numbered 4, 8 and 12 can all be 

  • NADH

  • ATP

  • H2O

  • FAD+ or FADH2


B.

ATP

Pathway A:- Glycolysis

Pathway B:- Kreb's Cycle

Pathway C:- Oxidative Phosphorylation

Arrow in the above 3 pathways represent net reactants or products which are as follows-

1 - ADP or NAD+

2 - Pyruvate

3 - NADH

4 - ATP

5 - ADP, NAD+ or FAD

6 and 7 - FADH2 and NADH

8 - ATP or CO2

9 and 10 - O2 and ADP

11 and 12 - H2O and ATP  


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Which one is product of aerobic respiration

  • Malic acid 

  • Ethyl alcohol

  • Lactic acid

  • Pyruvic acid


Citric acid cycle is the alternate name of which of the following

  • HMP shunt

  • Glycolysis

  • TCA cycle

  • Calvin cycle


Respiratory enzymes are present in the following organelle

  • peroxysome

  • chloroplast

  • mitochondrion

  • lysosome


Which of the following substances yield less than 4 kcal/mol when its phosphate bond is hydrolysed

  • Creatine phosphate

  • ADP

  • Glucose-6-phosphate

  • ATP


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How many ATP molecules will be generated in a plant system . during complete oxidation of 40 moles of glucose?

  • 190

  • 380

  • 1520

  • 3040


Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins?

  • Glucose-6-phosphate

  • Fructose 1, 6-bisphosphate

  • Pyruvic acid

  • Acetyl Co-A


How many ATP are produced when one molecule of FADH2 is oxidised to FAD through electron transport system?

  • 2

  • 3

  • 1

  • 4


Out of 38 molecules of ATP produced upon aerobic respiration of glucose, the break up if ATP production in glycolysis (P), pyruvate to acetyl Co- A formation (Q) and Krebs' cycle (R) is as follows

  • P= 2, Q= 6, R= 30

  • P= 8, Q= 6,R= 24

  • P= 8, Q= 10, R= 2

  • P= 2, Q= 12, R= 24


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TCA cycle enzymes are located in

  • cristae

  • outer membrane

  • mitochondrial matrix

  • mitochondrial intermembrane space


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