Which functional group is present in all amino acids?

A Hydroxyl and carboxyl

B Amino and carboxyl

C Aldehyde and amino

D Ketone and carboxyl

✓ Correct Answer: Option B

All amino acids have an amino group (−NH2) and a carboxyl group (−COOH) attached to the alpha carbon.

💡 Why is B) the correct answer?

The correct answer to the question "Which functional group is present in all amino acids?" is Option B: Amino and carboxyl.

The other options — A) Hydroxyl and carboxyl, C) Aldehyde and amino, D) Ketone and carboxyl — are incorrect for this MCAT Exam Prep question. As explained above: All amino acids have an amino group (−NH2) and a carboxyl group (−COOH) attached to the alpha carbon.

📚 About This MCAT Exam Prep Practice Question

This 1-level MCAT Exam Prep question from the Chemical & Physical Foundations topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free MCAT Exam Prep practice test or use flashcards for spaced repetition review.

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Which functional group is present in all amino acids?

✓ Correct Answer: Option B

📚 About This MCAT Exam Prep Practice Question

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