Please answer all of the following multiple questions, thanks! 5. Which of the f

Question

Please answer all of the following multiple questions, thanks! 5. Which of the following statements about oxidative stress is TRUE? A) Glutathione peroxidase converts NADP+ and reduced glutathione to NADPH and oxidized glutathione B) glutathione reductase and NADPH react to regenerate reduced glutathione C) Glutathione is an oxidant which can oxidize ROS and prevent oxidative damage D) Glutathione reductase converts reduced glutathione and oxidized ROS to oxidized glutathione and reduced ROS E) oxidative phosphorylation reduces toxic Reactive Oxygen Species (ROS) Which of the following indicates the correct order of product release by pyruvate dehydrogenase? A) acetyl-CoA, CO2, NADH B) NADH, CO2, acetyl-CoA C) CO2, NADH, acetyl-COA 6. CO2, acetyl-CoA, NADH E) NADH, acetyl-CoA, CO2 7. The reaction catalyzed by fumarase is A) an isomerization of an alcohol B) a dehydration of an alcohol C) a hydroxylation of an alkene D) a hydration of an alkene E) none of the above 8. Which of the following represents the correct order of electron flow in Complex 1? A) NADH-ubiquinone-> Fe-S clusters->FMN B) NADH-Fe-S clusters FMN ubiquinone C) NADH FMN-> ubiquinone Fe-S clusters D) NADH FMN-Fe-S clusters ubiquinone E) NADH-ubiquinone-FMN Fe-S clusters

Explanation / Answer

Ans 5. The correct option is option B. Glutathione reductase and NADPH react to generate reduced glutathione.

Ans. 6 The correct order of product release by pyruvate dehydrogenase are CO2, acetyl CoA, NADH

Ans. 7 The reaction catalysed by fumarase is an hydration of an alkene. It occurs during reversible hydration of fumarate ion to L matae ion.

Ans 8. The correct order of electron flow in Complex I is option C.

NADH -----------> FMN----------->UBIQUINONE-------------->Fe-S clusters.

it is a system of the complex I NADH-ubiquinone oxidoreductase flavoprotein. NADH is the substrate, FMN prosthetic group of enzyme, 4H+ are pumped into the membrane as a result of electron flow.

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