Which prefix means against?

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Prepare for the NHM 195 Dietetics Nutrition Practice Test with flashcards and multiple choice questions. Each question includes hints and explanations to boost your readiness for the exam!

Multiple Choice

Which prefix means against?

Explanation:
A prefix that expresses opposition is anti-. It literally means against or opposite, and you’ll see it in terms like antioxidant, antibiotic, and antihypertensive, where the prefix indicates opposing the action described. Dia- means through, across, or between, as in diameter or diagnosis, so it’s not about opposition. Lys/o is a root element meaning to loosen or dissolve (as in lysosome), used within terms rather than as a prefix indicating opposition. Dermat/o relates to the skin, as in dermatology, and does not convey opposition either.

A prefix that expresses opposition is anti-. It literally means against or opposite, and you’ll see it in terms like antioxidant, antibiotic, and antihypertensive, where the prefix indicates opposing the action described.

Dia- means through, across, or between, as in diameter or diagnosis, so it’s not about opposition. Lys/o is a root element meaning to loosen or dissolve (as in lysosome), used within terms rather than as a prefix indicating opposition. Dermat/o relates to the skin, as in dermatology, and does not convey opposition either.

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