Complex IV

Q. How many oxygen molecules are required for the oxidation of all the reduced coenzymes produced due to oxidation of one glucose molecule?

1. 12

2. 10

3. 24

4. 6

Q. The correct sequence of electron acceptor in ATP synthesis is

1. $\text{Cyt}{a}_3,a,b,c$
2. $\text{Cyt}b,c,a,a_3$
3. $\text{Cyt}b,c,a_3,a$
4. $\text{Cyt}c,b,a,a_3$

Q. Cyanide resistant pathway is _____.

1. anaerobic respiration
2. aerobic respiration
3. Both (a) and (b)
4. None of these

Q. How many times oxidative decarboxylation occurs during breakdown of glucose?

Q.

What inhibits ETC?

Q. The final electron acceptor in the electron transport chain during oxidative phosphorylation is __________.

1. pyruvate
2. oxygen
3. acetyl CoA
4. ATP

Q.

How many complexes are there in ETC?

Q.

What happens when complex 3 is inhibited?

Q.

What happens if ETC is blocked?

Q.

Is NADP an electron carrier?

Q. ___________ is the terminal cytochrome that donates electrons to oxygen during the electron transport chain.

1. Cytochrome a
2. Cytochrome $a_3$
3. Cytochrome b
4. Cytochrome c

Q.

Which complex is formed by Cyt a and Cyt a3?

Q. When one molecule of glucose is completely oxidized into $C{O}_2$ and $H_{2}O$, How many ATP are generated by proton gradient?

1. 36 or 38
2. 38 or 40
3. 34 or 32
4. 36 or 34

Q.

What is cytochrome C in biology?

Q. In the electron transfer chain, during terminal oxidation, oxygen receives electrons from

1. cyt-b
2. cyt-c
3. cyt-a3
4. cyt-f

Q.

Is NADP+ an electron carrier?

Q. Match the following columns and select the correct option w.r.t. different complexes in ETS.

$\begin{array}{cc}\text{Column-I}& \text{Column-II}\\ \text{a.Complex III}& \text{(i) Succinate dehydrogenase}\\ \text{b.Complex I}& \text{(ii) NADH dehydrogenase}\\ \text{c. Complex IV}& \text{(iii)Cytochrome bc1}\\ \text{d. Complex II}& \text{(iv)Cytochrome c oxidase}\end{array}$

1. $a\left(ii\right),b\left(iv\right),c\left(i\right),d\left(iii\right)$
2. $a\left(iii\right),b\left(i\right),c\left(iv\right),d\left(ii\right)$
3. $a\left(ii\right),b\left(iii\right),c\left(i\right),d\left(iv\right)$
4. $a\left(iii\right),b\left(ii\right),c\left(iv\right),d\left(i\right)$

Q. Cyanide resistant pathway is _____.

1. Anaerobic respiration
2. Aerobic respiration
3. Both (a) and (b)
4. Krebs cycle

Q. Terminal oxidation comprises

1. Synthesis of metabolic water
2. Electron transport
3. Oxidative phosphorylation
4. All the above

Q.

1. 3 and 2
2. 2 and 1
3. 2 and 3
4. 1 and 1

Q.

In the electron transport chain during terminal oxidation, the cytochrome, which donates electrons to \(O_2\) is

Q. Cytochromes help in ____________.

1. synthesis of glucose
2. release of energy
3. electron transport
4. growth

Q. Cytochromes are _______________.

1. Riboflavin nucleotides
2. Pyrimidine nucleotides
3. Iron porphyrin proteins
4. Flavoproteins

Q.

Which of the following pathways will split water?

1. noncyclic pattern pathway

2. cyclic electron pathway

3. light-independent reactions

4. electron transport pathway

Q. How many oxygen molecules are required for the oxidation of all the reduced coenzymes produced due to oxidation of one glucose molecule?

1. 12
2. 24
3. 10
4. 6

Q. ___________ is the terminal cytochrome that donates electrons to oxygen during the electron transport chain.

1. Cytochrome a
2. Cytochrome $a_3$
3. Cytochrome b
4. Cytochrome c

Q. During oxidative phosphorylation, which of the following provides energy for the ATP formation?

1. CoA
2. NADPH
3. Efflux of proton to perimitochondrial space
4. Pyruvic acid

Q. The last electron acceptor in the Electron Transport Chain in aerobic respiration is _____.

1. $O_2$
2. $C{O}_2$
3. $H_2$
4. $NADH$

Q. Oxygen is directly utilised in

1. glycolysis
2. fermentation
3. electron transport chain
4. TCA cycle

Q. Assertion :E.coli having pBR322 with DNA insert at BamHI site cannot grow in medium containing tetracycline. Reason: Recognition site for BamHI is present in $te{t}^R$ region of pBR322.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect