Question

question 19 (1 point)
which of the following is in its oxidized form?
fadh2
nadh
fad
$\ce{c6h12o6}$

Explanation:

To determine the oxidized form, we analyze each option:

• \( \text{FADH}_2 \): Reduced form of FAD (carries electrons/hydrogen).
• \( \text{NADH} \): Reduced form of NAD⁺ (carries electrons/hydrogen).
• \( \text{FAD} \): Oxidized form of \( \text{FADH}_2 \) (accepts electrons/hydrogen to become \( \text{FADH}_2 \), so FAD is oxidized).
• \( \text{C}_6\text{H}_{12}\text{O}_6 \) (glucose): Oxidized during respiration, but in its "original" state, it is a reduced energy - rich molecule (not the oxidized form in the context of cofactors like FAD/NAD).

Answer:

C. FAD