The prefix Apo- denotes which meaning?

The prefix Apo- denotes which meaning?

• A. Against
• B. Away from
• C. Toward
• D. Within

Answer: (B)

Apo- denotes away from. It signals separation or removal, coming from Greek for off or away. In medical terms you might see apoenzyme, which means the enzyme portion without its cofactor—the enzyme as a separate, incomplete form. That sense of separation is what the prefix conveys, making “away from” the best fit. Other directions use different prefixes: anti- means against, ad- or toward- means toward, and endo- or intra- means within. Those don’t match the away-from sense of apo-.

Apo- denotes away from. It signals separation or removal, coming from Greek for off or away. In medical terms you might see apoenzyme, which means the enzyme portion without its cofactor—the enzyme as a separate, incomplete form. That sense of separation is what the prefix conveys, making “away from” the best fit.

Other directions use different prefixes: anti- means against, ad- or toward- means toward, and endo- or intra- means within. Those don’t match the away-from sense of apo-.