Cytochrome c

Q.

What is the function of the cytochrome?

Q. In the ETC, electrons from Complex III are transfered to Complex IV by

1. Cytochrome C
2. Ubiquinone
3. Complex II
4. Complex I

Q.

Which complex of ETS has both iron and copper?

Q. During light reaction, as electrons move through photosystems, protons are transported across the membrane. This happens because of

1. The primary acceptor of $e^{–}$ (located towards the outer surface of the membrane) transfers its electron not to an $e^{–}$ carrier but to H carrier.
2. The primary acceptor of e– transfers only $H^{+}$ to the next carrier.
3. The primary acceptor of $e^{–}$ transfers only its $e^{–}$ to $e^{–}$ carrier.
4. NADP - reductase is present in grana.

Q.

What enzyme produces ATP in the Electron transport chain?

Q. The enzyme that is not found in a C3 plant is

1. PEP Carboxylase
2. ATP synthase
3. NADP reductase
4. RuBP Carboxylase

Q. In the ETC, electrons from Complex III are transfered to Complex IV by

1. Cytochrome C
2. Ubiquinone
3. Complex I
4. Complex II

Q.

What is the main biochemical function of the electron transport chain?

Q. What are cytochromes?

Q. Excess of ATP inhibits respiration by inhibiting one of the following enzymes

1. Hexokinase
2. Phosphofructokinase
3. Pyruvic decarboxylase
4. Aldolase

Q. What happens when the concentration of carbon monoxide increases in plants?

1. It will lead to decrease in respiration rate
2. It will not have any effect on the respiration rate
3. It will increase the rate of respiration
4. It will first increase and then decrease the rate of respiration

Q. Terminal cytochrome of respiratory chain which donates electrons to oxygen is

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

Q.

How many cytochrome complexes are in the electron transport chain?

Q.

What is the function of coenzyme Q?

Q.

What is human cytochrome c?

Q. Cytochrome c:

1. accepts an electron from cytochrome c oxidase in the mitochondrial electron-transfer chain
   
2. is irreversibly oxidized in the mitochondrial electron-transfer chain
3. is a haem protein
4. is a non-haem protein

Q.

Does cytochrome c carry protons?

Q.

What is the function of the cytochrome c oxidase?

Q.

Where are cytochromes located?

Q. What happens when the concentration of carbon monoxide increases in plants?

1. It will lead to decrease in respiration rate
2. It will not have any effect on the respiration rate
3. It will increase the rate of respiration
4. It will first increase and then decrease the rate of respiration

Q. Which is associated with electron transport in photosynthesis?

1. Sodium
2. Potassium
3. Iron
4. Cobalt

Q. Cytochrome c is a mobile carrier of electrons between ______________.

1. complex I and complex II
2. complex II and complex III
3. complex III and complex IV
4. complex I and complex IV

Q. If the central Mg atom is replaced by Fe, the chlorophyll becomes:

1. Catalase
2. Phytochrome
3. Cytochrome
4. None of the above

Q. The heam protein essential for ETC is

1. Cytochrome C
2. Chlorophyll
3. Myoglobin
4. Phytochrome

Q. Cyanide causes irreversible inhibition of cytochrome oxidase. This is because it

1. Destroys tertiary structure.
2. Combines with iron.
3. Attaches to copper.
4. All the above.

Q. It is told that one molecule of N A D H 2 forms 3 molecules of ATP in electron transport chain where N A D H 2 fuses to inner mitochondrial membrane from matrix side in mitochondria so how does N A D H2 formed in cytoplasm during glycolysis get converted into ATP.

Q. Protein which is both structural and enzymatic is

1. Troponin
2. Myosin
3. Trypsin
4. Actin

Q. Final electron acceptor in ETS is

1. $H_{2}O$
2. $O_2$
3. Cyt a
4. Cyt $a_3$

Q. In mitochondrial electron transport first receptor of electron:

1. Cyto $a_3$
2. Flavo protein
3. $Fe-S$ protein
4. Plastic quinone A and B

Q. State whether the following statements are true or false.
The highest concentration of hydrogen ions in the mitochondria is in- the intermitochondrial space.

1. True
2. False