Electron Transport Chain

Q.

What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.

Q.

How many ATP are produced from 1 pyruvate?

Q.

What is the importance of the photolysis of water?

Q. Which one of the following is incorrect statement for mitochondrial ETC and oxidative phosphorylation?

1. Enzyme complex I accepts electrons and $H^{+}$ from $NADH$ and $FAD{H}_2$
2. Passage of protons through the channel coupled to the catalytic site of the $F_1$ for ATP production
3. Cytochrome-c is a mobile protein attached to the outer surface of inner membrane
4. $6H^{+}$ passes through $F_0$ from intermembrane space to the matrix down the electrochemical proton gradient to produce 3ATP

Q. Give an account of Glycolysis. Where does it occur? What is the end product? Trace the fate of these products in both aerobic and anaerobic respiration.

Q.

Which step in the TCA cycle is related to the oxidative decarboxylation step?

Q.

How does glucose break down in cellular respiration?

Q. Which one of the following is the terminal electron acceptor?

1. Molecular $H_2$
2. Molecular $C{O}_2$
3. Molecular $O_2$
4. $NADP{H}_2$

Q. Pyruvate, which is formed by the glycolytic catabolism of carbohydrates in the cytosol, after it enters mitochondrial matrix, undergoes

1. oxidative carboxylation
2. oxidative decarboxylation
3. reductive carboxylation
4. carboxylation

Q.

What two products are made during the formation of acetyl CoA?

Q.

What happens to the energy liberated in respiration?

Q.

Why does pyruvate turn into lactate?

Q. NADP, NAD and FAD are acceptors of

1. Hydrogen
2. Phosphate
3. Electrons
4. Oxygen

Q. In alcoholic fermentation, NAD+ is produced during the

1. reduction of acetyldehyde to ethanol
2. oxidation of glucose
3. oxidation of pyruvate to acetyl coA
4. hydrolysis of ATP to ADP

Q.

Which reduced Coenzymes start the production of ATP?

Q. Mitochondria are the sites for

1. photophosphorylation
2. oxidative phosphorylation
3. carboxylation
4. transpiration

Q. Complex III and IV of the $ETS$ are respectively

1. Cytochrome $c$ oxidase and cytochrome $b{c}_1$ complex
2. Cytochrome $b{c}_1$ complex and cytochrome $c$ oxidase
3. $FAD{H}_2$ and cytochrome $c$ oxidase
4. $NADH$ dehydrogenase and $FAD{H}_2$

Q.

Are plants anaerobic?

Q.

Which of the following equations is the summary of photosynthesis?

1. 6CO₂ + 12H₂O → C₆H₁₂O₆ + 6O₂ + 6H₂O

2. 6CO₂ + H₂O + sunlight→ C₆H₁₂O₆ + O₂+ 6H₂O

3. 6CO₂ + 12H₂O +chlorophyll+sunlight→ C₆H₁₂O₆ + 6O₂+ 6H₂O

4. 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6CO₂+ 6H₂O

Q.

What are the 4 metabolic pathways?

Q.

What are the 2 coenzymes involved in TCA cycle?

Q.

Why is ATP an immediate source of energy?

Q.

Which of the following pathways does NOT occur in aerobic cellular respiration?

1. Glycolysis

2. Krebs cycle

3. Electron transport system

4. Calvin cycle

Q.

Krebs cycle

Q.

Where do substrate-level phosphorylation and oxidative phosphorylation occur?

Q.

What is cellular respiration?

Q.

The ultimate electron acceptor of respiration in an aerobic organism is
a) Cytochrome
b) Oxygen
c) Hydrogen
d) Glucose

Q. The radio labelled carbon in carbon dioxide supplied to potato plants in an experiment was seen in the tuber eventually. Trace the movement of the labelled carbon dioxide.

Q.

Does photosynthesis require ATP?

1. True
2. False

Q. Where does krebs cycle in plant cell