Which of the following is the connecting link between glycolysis and Krebs cycle?
(1) Acetyl Co-A

(2) Oxalosuccinic acid

(3) Pyruvic acid

(4) Citric acid 

Subtopic:  Kreb's Cycle |
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The enzyme decarboxylase catalyses the following step
(1) conversion of citric acid to cis aconitic acid

(2) fumaric acid to malic acid

(3) oxalosuccinic acid to o-ketoglutaric acid

(4) malic acid to oxaloacetic acid.

Subtopic:  Kreb's Cycle |
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Which of the following is true regarding the given electron transport chain?
CoQ Cyt c Cyt aa3O2(a) CoQ Cyt c is H+ absorbing site.(b) aa3  O2, H+ yielding site.(c) CoQ  Cyt c is H+ yielding site and aa3O2 is H+ absorbing site.(d) No H+ is absorbed or released

Subtopic:  ETS:2 | ETS:1 | ETS |
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After glycolysis, fate of glucose in mitochondrial matrix is

(1) oxidation

(2) reduction

(3) oxidative decarboxylation

(4) hydrolysis.

Subtopic:  Glycolysis Regulation |
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Which enyme helps in transfer of phosphate group from ATP to carbohydrate?

(1) Phosphate

(2) ATPase

(3) Phosphorylase

(4) Catalase

Subtopic:  Glycolysis Regulation |
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Which one is correct sequence occuring in glycolysis?
(1) G-6-P PEP 3-PGAL 3-PGA

(2) G-6-P 3-PGAL  3-PGA PEP

(3) G-6-P PEP 3-PGA 3-PGAL

(4) G-6-P 3-PGA 3-PGAL PEP

Subtopic:  Glycolysis |
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In which of the following reactions of glycolysis, a molecule of water is removed from the substrate?
(a) Glucose  Glucose-6-phosphate
(b) Fructose-6-phosphate  Fructose-1,6 bisphosphate
(c) 2-phosphoglycerate Phosphoenol pyruvate
(d) Phosphoenol pyruvate Pyruvate

Subtopic:  Glycolysis |
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Aerobic respiration produces more usable chemical energy than fermentation, because fermentation involves
(1) formation of lactic acid 

(2) complete oxidation of food

(3) partial oxidation of food 

(4) evolution of CO2 and alcohol

Subtopic:  Aerobic Respiration |
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RQ (Respiratory Quotient) is defined as

(1) Volume of CO2 evolved = Volume of O2 consumed

(2)  Volume of O2 consumedVolume of CO2 evolved

(3) Volume of CO2 evolvedVolume of O2 consumed

(4) Volume of O2 evolvedVolume of CO2 consumed

Subtopic:  Respiratory Quotient |
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The colour in the brown fat is due is
(1) its larger capacity for generating heat

(2) large number of mitochondria present

(3) a high concentration of iron containing cytochrome pigments

(4) presence of chromatophores

Subtopic:  Amphibolic Nature of Respiration |
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