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QUESTION 1 Match each electron carrier with the appropriate description. A. coenzyme that can accept or donate one or two ele
QUESTION 4 Select the ETC complexes that are involved in the electron transfer, from cytosolic NADH to oxygen, when the gycer
QUESTION 1 Match each electron carrier with the appropriate description. A. coenzyme that can accept or donate one or two electrons electron carrier that can accept or donate one electron .coenzyme that can accept or donate two electrons · compound with the highest reduction potential cytochrome c 8. oxygen C. NAD D.ubiquinone
QUESTION 4 Select the ETC complexes that are involved in the electron transfer, from cytosolic NADH to oxygen, when the gycerol 3-phosphate shuttle is used. Check all that apply. Complex Complex Complex Complex IV
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Answer #1

Question 1.

(i) A coenzyme that can accept or donate one or two electrons is ubiquinone.

Explanation: Ubiquinone (or coenzyme Q) is a hydrogen carrier; like FAD and FMN, it can carry two electrons but can accept and donate them one at a time.

(ii) An electron carrier that can accept or donate one electron is cytochrome c.

Explanation: From cytochrome reductase, the electron is picked up by another mobile electron carrier, cytochrome c. Cytochrome c is a small protein containing one heme group.

(iii) A coenzyme that can accept or donate two electrons is NAD.

Explanation: NAD + H+ + 2e- ----> NADH

(iv) Compound with the highest reduction potential is -oxygen.

Explanation: Oxygen is a non-metal, so it has the highest reduction potential, the potential to gain electrons.

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