Question

Suppose that the ratio of FADH to FADH₂ is 1. The molecule is said to be in?

1) oxidized state
2) reduced state
3) neutral state
4) ionized state

Answer 1

When the ratio of FADH to FADH₂ is 1, it implies an equal balance between the oxidized and reduced forms of flavin adenine dinucleotide, suggesting a neutral redox state, although 'neutral state' is not a standard term in biochemistry for such a condition.

Step-by-step explanation:

Flavin adenine dinucleotide (FAD) undergoes redox reactions within the cell. In its oxidized state, it is represented as FAD, and in its reduced state, as FADH₂. When the ratio of FADH to FADH₂ is 1, it means that there is an equal amount of oxidized and reduced FAD in the system. Given that FADH₂ represents the reduced form, if it has the same amount as the oxidized FAD, it implies the molecule can be considered to be in a neutral state in terms of redox balance, although this term is not commonly used in biochemistry.