Electron Transport Chain

Q.

Choose the correct option-

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

1. malate dehydrogenase

2. isocitrate dehydrogenase

3. lactate dehydrogenase

4. succinate dehydrogenase

Q.

What are the assumptions made during the calculation of net gain of ATP?

Q. Electron transport chain (ETC) is present in ___________.

1. the outer membrane of mitochondria
2. the intermembrane space of mitochondria
3. the inner membrane of mitochondria
4. the matrix of mitochondria

Q. Observe the graph between light intensity and rate of photosynthesis.

Choose the correct match w.r.t. A, C, D, E mentioned in the graph.

1. A-(iii), B-(iv), C-(i), D-(ii)
2. A(iv), B(iii), C(ii), D(i)
3. A(iv), B(iii), C(i), D(ii)
4. A(ii), B(i), C(iv), D(iii)

Q.

Is FAD an electron carrier?

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.

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

1. glycolysis

2. Krebs cycle

3. Calvin cycle

4. electron transport system

Q. Enzymeslocated in mitochondrial membrane are ______.

1. Enolase and Catalase
2. Flavoproteinsand Cytochromes
3. Hexokinase and Zymase
4. Citrate synthetase and Glutamate dehydrogenase

Q. What is the correct order of cellular respiration?

1. Krebs cycle – Electron transport chain – Glycolysis
2. Electron transport chain – Krebs cycle – Glycolysis
3. Glycolysis – Krebs cycle – Electron transport chain
4. Glycolysis – Electron transport chain – Krebs cycle

Q. In mitochondria, protons accumulate in _________.

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

Q. Oxidation of one molecule of NADH gives rise to ATP molecules while that of one $FAD{H}_2$ molecule generates molecules of ATP.

1. two
2. three
3. four
4. five

Q. A scientist added a chemical to an animal to stop aerobic respiration. Which of the following is most likely to be affected by this treatment?

1. Active transport of substances across the plasma membrane
2. Passive transport of substances across the plasma membrane
3. Diffusion of substances across the plasma membrane
4. The thickness of the plasma membrane

Q. Maximum ATP is generated in the from oxidative phosphorylation.

1. chloroplast
2. mitochondria
3. cytoplasm
4. lysosome

Q. what is active glucose
a FAD glucose
b NAD glucose
c phosphoglucose
d glycerophosphate