Multiple Choice Questions

Advertisement

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

  • 2

  • 3

  • 1

  • 4


A.

2

During the course of electron transfer, when electrons passes from one carrier molecule to another in the ETC. They get coupled to ATP synthase for the production of ATP from ADP and Pi (inorganic phosphate). The number of ATP molecule synthesised depends upon the nature of the electron donor. One molecule of FADH2 on oxidation provides or produces 2 molecules of ATP because its redox potential is higher than NADH and thus, enters the ETS after by passing the first site of phosphorylation.


Advertisement

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

  • Creatine phosphate

  • ADP

  • Glucose-6-phosphate

  • ATP


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

  • 190

  • 380

  • 1520

  • 3040


Respiratory enzymes are present in the following organelle

  • peroxysome

  • chloroplast

  • mitochondrion

  • lysosome


TCA cycle enzymes are located in

  • cristae

  • outer membrane

  • mitochondrial matrix

  • mitochondrial intermembrane space


Advertisement

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


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

  • HMP shunt

  • Glycolysis

  • TCA cycle

  • Calvin cycle


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


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


Advertisement
<

Which one is product of aerobic respiration

  • Malic acid 

  • Ethyl alcohol

  • Lactic acid

  • Pyruvic acid


Advertisement