In which one of the following processes CO₂ is not released ?

1. Aerobic respiration in plants

2. Aerobic respiration in animals

3. Alcoholic fermentation

4. Lactate fermentation

Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins?

1. Frutose1, 6 - bisphosphate

2. Pyruvic acid

3. Acetyl CoA

4. Glucose- 6 -phopsphate

The three boxes in this diagram represents the three major biosynthetic pathways in aerobic respiration Arrows represent net reactants or products. 
 
Arrows numbered 4, 8 and 12 can all be:

1. ATP

2. A₂O

3. FAD⁺ or FADH₂

4. NADH

In mitochondria, protons accumulate in the :
1. Matrix
2. Outer membrane
3. Inner membrane
4. Intermembrane space

The energy-releasing metabolic process in which substrate is oxidized without an external electron acceptor is called

1. glycolysis

2. fermentation

3. aerobic respiration

4. photorespiration

Aerobic respiratory pathway is appropriately termed

1. catabolic

2. parabolic

3. amphibolic

4. anabolic

All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is:

1. lactate dehydrogenase

2. isocitrate dehydrogenase

3. malate dehydrogenase

4. succinate dehydrogenase

The overall goal of glycolysis, Krebs cycle and the electron transport system is the formation of :

1. ATP in small stepwise units.

2. ATP in one large oxidation reaction

3. Sugars

4. Nucleic acids

How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO₂ and H₂O yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal?

1. Two

2. Thirty

3. One

4. Fifty seven