Respiration in Plants · Question 26

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

1. Pyruvic acid
2. Acetyl CoA
3. Glucose-6-phosphate
4. Fructose-1,6-bisphosphate

The three boxes in this diagram represent the three major biochemical pathways in aerobic respiration. Arrows represent net reactants or products. [figure] Arrows numbered 4, 8 and 12 can all be

1. H2O
2. FAD or FADH2
3. NADH
4. ATP.

In mitochondria, protons accumulate in the

1. outer membrane
2. inner membrane
3. intermembrane space
4. matrix

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

1. glycolysis
2. fermentation
3. aerobic respiration
4. photorespiration

Aerobic respiratory pathway is appropriately termed

1. parabolic
2. amphibolic
3. anabolic
4. catabolic.

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

1. glycolysis
2. fermentation
3. aerobic respiration
4. photorespiration

The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because

1. a proton gradient forms across the inner membrane
2. there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP)
3. high energy bonds are formed in mitochondrial proteins
4. ADP is pumped out of the matrix into the intermembrane space

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

1. ATP in one large oxidation reaction
2. sugars
3. nucleic acids
4. ATP in small stepwise units

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

1. isocitrate dehydrogenase
2. malate dehydrogenase
3. succinate dehydrogenase
4. lactate dehydrogenase

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. 1
2. 2
3. 30
4. 57