During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP?
Conversion of pyruvic acid to acetyl Co-A
Electron transport chain
Glycolysis
Krebs cycle
Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on
proton gradient
accumulation of K ions
accumulation of Na ions
membrane potential
The terminal electron acceptor during electron transport system is
oxygen
cyto a3
cyto c
plasto quinone
Assertion: Conversion of 1,3 biphosphoglycerate (BPGA) to 3-phospho-glyceric acid (PGA) is an energy yielding step.
Reason: This energy is trapped in the form of ATP
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Which enzyme helps in transfer of phosphate group from ATP to a carbohydrate
Phosphatase
ATPase
Phosphorylase
Catalase
Assertion: Glucose is the favoured respiratory substrate.
Reason: When glucose is used as respiratory substrate and is completely oxidized, the RQ is 1.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
A.
If both assertion and reason are true and reason is the correct explanation of assertion.
The ratio of the volume of CO2 evolved to the volume of O2 consumed in respiration is called the respiratory quotient (RQ) or respiratory ratio.
RQ = Volume of CO2 evolved Volume of O2 consumed.
The respiratory quotient depends upon the type of respiratory substrate used during respiration. When carbohydrates are used as substrate and are completely oxidised, the RQ will be 1, because equal amounts of CO2 and O2 are evolved and consumed respectively.
C6H12O6 +6O2 6CO2 +6H2O+ Energy
RQ = 6CO26O2 = 1