What Do the Amino Acids Tyr, Asn, and Thr Have

question 2

Multiple Choice

What do the amino acids Tyr, Asn, and Thr have in common?

• A) aromatic rings
• B) negatively charged at pH 7.0
• C) positively charged at pH 7.0
• D) double bonds in side chains
• E) polar

---

Definitions:

Compound

Substance having two or more different elements in a fixed ratio.

Molecules

Groups of two or more atoms held together by chemical bonds.

Nucleus

A membrane-bound organelle found in eukaryotic cells that contains most of the cell's genetic material.

Neutrons

Neutral, subatomic particles found in the nucleus of an atom, contributing to the atom's mass but not its charge.