Decarboxylation is involved in

• electron transport system

• glycolysis

• Krebs' cycle

• lactic acid fermentation

The process after glycolysis in anaerobic respiration is known as

• fermentation

• respiration

• Krebs' cycle

• decomposition

Fermentation products of yeast are

• H₂O + CO₂

• Methyl alcohol + CO₂

• Methyl alcohol + water

• Ethyl alcohol + CO₂

RQ for fatty substance/ fat is

• unity

• less than one

• more than one

• zero

Terminal cytochrome of respiratory chain which donates electrons to oxygen is :

• cytochrome b

• cytochrome c

• cytochrome a

• cytochrome a₃

How many ATP are formed by oxidation of one glucose molecular in liver cells ?

• 36

• 38

• 2

• 8

Glycolysis occurs in :

• cytoplasm

• nucleus

• mitochondria

• both 'a' and 'c

The presence of arginase confirms that :

• urea cycle is operating

• urea cycle may be operating

• arginine is being converted into ornithine

• arginine is being converted into citrulline

69.

Glycolysis is found in cytoplasm of virtually all types of aerobic/ anaerobic cells. In this process glucose is converted into

• PEP

• acetyl CoA

• pyruvic acid

• citric acid

In which of the following steps of citric acid cycle, CO₂ is evolved?

I. Citric acid – Ketoglutaric acid 

II. Succinic acid – Malic acid 

III. Malic acid – Oxaloacetic acid 

IV. $\mathrm{\alpha }$-ketoglutaric acid – Succinyl CoA

• I and II only

• I and IV only

• II and III only

• II and IV only

• II and IV only