Which of the following statements is true of proteins?

Proteins lose some or all of their normal activity if their three-dimensional structure is disrupted.

Proteins are composed of ribose, phosphate, and a nitrogen-containing base.

The activity of proteins is independent of temperature and pH.

Denaturation is usually reversible.

All proteins are enzymes.

The answer is Denaturation is reversible

Explanation:

Denaturation of proteins is the process whereby there is a disruption in the tertiary, quaternary or secondary structure of proteins which causes a conformation change in its action

denaturation is reversible, that is, the proteins can regain their native state when the denaturing influence is removed. This process can be called renaturation.