Question

What AA are considered UNCHARGED POLAR?

a) Aspartic acid, Glutamic acid, Lysine, Arginine, Histidine
b) Serine, Threonine, Asparagine, Glutamine, Tyrosine
c) Alanine, Valine, Leucine, Isoleucine, Methionine
d) Phenylalanine, Tryptophan, Cysteine, Proline, Glycine

Answer 1

Uncharged polar amino acids have polar side chains, but do not carry a charge. Some examples include serine, threonine, asparagine, glutamine, and tyrosine.

Step-by-step explanation:

Uncharged polar amino acids are amino acids that have a polar side chain, but do not have a charge. In this case, the correct option is b) Serine, Threonine, Asparagine, Glutamine, Tyrosine.

These amino acids have polar side chains that contain functional groups such as -OH (alcohol) and -CONH2 (amide), which can form hydrogen bonds with water but do not ionize.

For example, serine and threonine have a hydroxyl group (-OH) in their side chains, while asparagine and glutamine have an amide group (-CONH2). Tyrosine has a hydroxyl group and an aromatic ring in its side chain.