Which of the following ion is important for the activity of Pyruvate dehydrogenase?

  • Zn++

  • Mn+

  • Mg++

  • Ca++

Who elucidated Krebs’ cycle for the very first time?

  • Frederick Kreb

  • Hans Kreb

  • Edward Kreb

  • Tilman Kreb

Which of the following is not used for the cyclic process of cellular respiration of carbohydrates?

  • Krebs’ cycle

  • Tricarboxylic Acid Cycle

  • Citric Acid cycle

  • Phosphorespiration cycle

The very first step of TCA cycle involves except

  • Citrate synthase

  • A molecule of coenzyme A is released

  • Isomerization

  • Formation of citrate

From citrate to alpha-ketoglutarate in TCA cycle all the following reactions happen except

(2) Decarboxylation

  • Isomerization

  • (4) FADH2 formation

  • Release of Carbon-dioxide

  • 4

From alpha-ketoglutarate to succinyl CoA in TCA cycle which of the following occurs

  • 4C compound is formed

  • 5C compound is Formed

  • 6C compound is formed

  • 2C compound is regenerated

What is that process in which GTP is formed in cellular respiration?

  • Glycolysis

  • Oxidative Phosphorylation

  • Electron Transport Chain

  • Krebs’ cycle

The synthesis of GTP in Krebs’ cycle is

  • Oxidative Phosphorylation

  • Substrate Level Phosphorylation

  • Photo Phosphorylation

  • Photorespiration

In a coupled reaction,....... is converted to …...with the simultaneous synthesis of ….…...from ……( The reaction of Krebs’ Cycle of cellular respiration)

  • GDP,GTP,ADP, ATP

  • GTP,GDP, ATP, ADP

  • ADP,ATP, GDP,GTP

  • ATP, ADP, GDP, GTP

In cellular respiration, where is FADH2 produced?

  • Conversion of BPGA to PGA

  • Conversion of succinate to Malate

  • Conversion of PEP to Pyruvate

  • Conversion of Malate to OAA

At how many points during Krebs’ cycle NADH is produced?

  • three

  • Four

  • Two

  • Five

At how many points, does the FADH2 is produced during complete breakdown of Glucose?

  • One

  • Three

  • Two

  • Five

Which of the following is a step of Krebs’ cycle during which NADH is not produced?

  • Conversion of Malate to Oxaloacetate

  • Conversion of Succinate to Malate

  • Conversion of Citrate to alpha-ketoglutarate

  • Conversion of alpha-ketoglutarate to succinyl CoA

How many ATPs are net gained till the completion of Krebs’ cycle during breakdown of one molecule of Glucose?

  • 4 ATPs in Glycolysis and 1 GTP in Krebs’ Cycle

  • 4 ATPs in Glycolysis and 2 GTP in Krebs’ Cycle

  • 2 ATPs in Glycolysis and 2 GTP in Krebs’ Cycle

  • 2 ATPs in Glycolysis and 1 GTP in Krebs’ Cycle

For the continuation of TCA, it needs except?

  • Regeneration of NAD+ and FAD+

  • Replenishment of Oxaloacetate

  • Regeneration of GTP

  • Both B and C

If one wants to write a whole reaction of Krebs’ cycle, then how many water molecules are utilizing in net calculation?

  • Two

  • One

  • Three

  • Four

How many Carbon-dioxide are removed from Acetyl CoA during Krebs’ cycle?

  • Two

  • Three

  • One

  • Four

How many times oxidative decarboxylation occurs during breakdown of Glucose?

  • Two

  • Four

  • Three

  • One

During cellular breakdown of one molecule of Glucose, How many NADH are produced in Matrix?

  • 6

  • 3

  • 8

  • 4

During cellular breakdown of one molecule of Glucose, How many NADH are produced in total?

  • 10

  • 8

  • 6

  • 4

During cellular breakdown of one molecule of Glucose, How many FADH2 are produced in Cytoplasm?

  • 2

  • 4

  • Zero

  • 1

Where does ETS occur?

  • Inner Mitochondrial Membrane

  • Peri Mitochondrial Space

  • Outer Mitochondrial Membrane

  • Inter Membrane Space

What is the complex which oxidizes NADH during ETs

  • Complex 1

  • NADH dehydrogenase

  • NADH oxidase

  • Both A and B

The electrones which are coming from oxidation of NADH are transferred from complex I to

  • Ubiquinol

  • Ubiquinone

  • Ubiquinal

  • Ubiquitous

FADH2 is oxidized by

  • Complex I

  • Complex II

  • Complex III

  • Complex IV

The reduced ubiquinone is

  • Ubiquinol

  • It is oxidized with the transfer of electrones to cytochrome C via cytochrome bc1 complex

  • Is a mobile carrier

  • Both A and B

Complex three is

  • NADH dehydrogenase

  • Succinate dehydrogenase

  • Cytochrome C oxidase

  • Cytochrome bc1 complex

Cytochrome c includes except

  • Mobile carrier

  • Present on outer surface of inner membrane

  • Acts as mobile carrier for transfer of electrones between complex III and IV

  • Transfers electrones from complex II to complex III as well

Oxidation of one molecule of FADH2 gives

  • One ATP

  • Two ATPs

  • Three ATPs

  • Four ATPs

Complex I does not have

  • FMN

  • Fe-S centres

  • NADH dehydrogenase

  • Cytochrome C1

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